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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240403T163000
DTEND;TZID=America/Chicago:20240403T173000
DTSTAMP:20260422T174219
CREATED:20240213T185431Z
LAST-MODIFIED:20240328T192454Z
UID:10016144-1712161800-1712165400@uwm.edu
SUMMARY:Marden Lecture: Professor Caroline J Klivans
DESCRIPTION:The intrigue that compels us \nWhen we witness unexpected phenomena\, a mathematician finds themselves asking: why?  We are compelled to understand further; what is the cause\, the basic underlying principles?   Mathematics is full of symmetries\, patterns and visuals that we can appreciate in their own right or use to explain and illustrate concepts.  And\, they can also drive us to discovery.  I will tell a story of chip-firing\, a mathematical idea that leads to fascinatingly intricate structures.  The imagery of these structures has spurred many questions to which we know surprisingly few answers.\n \n 
URL:/math/event/marden-lecture-caroline-j-klivans/
LOCATION:Lubar Hall N140\, 3202 N Maryland Ave\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Marden Lecture Series
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240404T130000
DTEND;TZID=America/Chicago:20240404T140000
DTSTAMP:20260422T174219
CREATED:20240319T164958Z
LAST-MODIFIED:20240325T151828Z
UID:10016150-1712235600-1712239200@uwm.edu
SUMMARY:Marden Special Topics Seminar: Prof. Caroline Klivans
DESCRIPTION:The Mathematics of Chip-Firing\nCaroline Klivans\nProfessor of Applied Mathematics\, Deputy Director of ICERM\nBrown University \nChip-firing processes are discrete dynamical systems. A commodity (chips\, sand\, dollars) is exchanged between sites of a network according to simple local rules. Although governed by local rules\, the long-term global behavior of the system reveals unexpected properties\, including intricate fractal-like patterns. In this talk\, I will give a broad survey of the theory of chip-firing\, highlighting both classical results and recent advances.
URL:/math/event/marden-special-topics-seminar/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Seminars
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240405T123000
DTEND;TZID=America/Chicago:20240405T133000
DTSTAMP:20260422T174219
CREATED:20240401T163151Z
LAST-MODIFIED:20240401T163151Z
UID:10016152-1712320200-1712323800@uwm.edu
SUMMARY:Graduate Student Colloquium: Kimberly Hadaway
DESCRIPTION:On Combinatorial Problems of Generalized Parking Functions\nKimberly Hadaway\nPhD Student\nIowa State University \nIn this talk\, we study combinatorial problems related to generalized parking functions. Our work is motivated by two different research questions posed to us by Dr. Ken Fan and Dr. Shanise Walker. First\, we reframe Dr. Fan’s probabilistic question in terms of defective parking functions\, which enumerate the number of cars unable to park in the classical parking function problem\, thereby providing a partial answer to his question. Second\, we answer Dr. Walker’s question establishing a bijection between unit interval parking functions and the Fubini rankings\, which get their name as they are enumerated by the Fubini numbers.
URL:/math/event/graduate-student-colloquium-kimberly-hadaway/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240412T140000
DTEND;TZID=America/Chicago:20240412T150000
DTSTAMP:20260422T174219
CREATED:20240213T184928Z
LAST-MODIFIED:20240411T200759Z
UID:10016142-1712930400-1712934000@uwm.edu
SUMMARY:Colloquium: Prof. Yoichiro Mori
DESCRIPTION:Mathematical Modeling of Cell Volume Control and Electrolyte Balance\nProf. Yoichiro Mori\nProfessor of Mathematics\nUniversity of Pennsylvania \nElectrolyte and cell volume regulation is essential in physiological systems. Biophysical modeling in this area\, however\, has been relatively sparse. After a brief introduction to cell volume control and electrophysiology\, I will discuss the classical pump-leak model of electrolyte and cell volume control. It will be shown that thermodynamic considerations lead to a new perspective of cell volume control. This classical model will then be generalized to a model with spatial extent (a system of partial differential equations) modeling cell-level electrodiffusive and osmotic phenomena. A simplified version of this model will then be applied to study osmosis-driven cell movement. I will also touch upon tissue-level models of ionic electrodiffusion and osmotic water flow which we have developed to study certain pathophysiologies of the central nervous system.
URL:/math/event/colloquium-yoichiro-mori/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240419T123000
DTEND;TZID=America/Chicago:20240419T133000
DTSTAMP:20260422T174219
CREATED:20240415T180913Z
LAST-MODIFIED:20240415T180913Z
UID:10016157-1713529800-1713533400@uwm.edu
SUMMARY:Graduate Student Colloquium: Matt McClinton
DESCRIPTION:Harmonize your Fractals\nMatt McClinton\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nThe Sierpinski Gasket (SG) is a known fractal object. A simple observation shows that SG is path connected. Unfortunately\, the infinitely jagged structure of the Gasket prevents these paths from being differentiable. If only there existed a means of smoothing out SG into an object where continuous and differentiable paths existed between pairs of points. As a matter of fact there is! \nI will demonstrate the technique known as “minimizing the graph energy” as described in the late Robert Strichartz’s book “Differential Equations on Fractals”. This technique involves finding the solution to a system of equations where the solution produces a graph that has differentiable paths\, and even better satisfies the Laplacian. Using a homeomorphic mapping defined by Jun Kigami in 1989\, by finding the graph energy minimizing values on level sets of SG\, we produce a fractal object known as the Harmonic Sierpinski Gasket (HSG). \nThis talk is intended for those that are interested in analysis\, algebra\, combinatorics\, topology\, fractal geometry\, and/or graph theory. Any necessary background information will be provided during the talk\, and I will end with some open problems.
URL:/math/event/graduate-student-colloquium-matt-mcclinton/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240423T130000
DTEND;TZID=America/Chicago:20240423T141500
DTSTAMP:20260422T174219
CREATED:20240411T201711Z
LAST-MODIFIED:20240415T133746Z
UID:10016154-1713877200-1713881700@uwm.edu
SUMMARY:Colloquium: Prof. Roger Howe
DESCRIPTION:Mathematics around the Heisenberg Group\nProf. Roger Howe\nProfessor Emeritus\nYale University \nIn the mid 1920s\, Werner Heisenberg formulated the CCR – canonical commutation relations – describing the relationship between the operations of measuring position and of measuring momentum of a particle in quantum mechanics. These have been fundamental to the later\, dramatically successful development of subatomic physics. Shortly after Heisenberg’s work\, Hermann Weyl pointed out that the CCR defined the relations of a Lie algebra\, whose associated group is a two-step nilpotent group with one dimensional center. Today\, this group (and its increasingly large set of cousins) is known as the “Heisenberg group”. Over the remainder of the 20th century\, appreciation grew of the fundamental role of the Heisenberg group in disparate mathematical topics\, including harmonic analysis\, partial differential equations\, invariant theory and representation theory\, in both finite and infinite dimensions. This talk will review and attempt to summarize some of the manifold connections between these topics that are mediated by the Heisenberg group
URL:/math/event/colloquium-prof-roger-howe/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240426T100000
DTEND;TZID=America/Chicago:20240426T120000
DTSTAMP:20260422T174219
CREATED:20240411T201135Z
LAST-MODIFIED:20240411T201135Z
UID:10016153-1714125600-1714132800@uwm.edu
SUMMARY:PhD Dissertation Defense: Mr. William Braubach
DESCRIPTION:Coarse Homotopy Extension Property and its Applications\nMr. William Braubach\nUniversity of Wisconsin-Milwaukee \nA pair (X\, A) has the homotopy extension property if any homotopy of A can be extended to a homotopy of X. The main goal of this dissertation is to define a coarse analog of the homotopy extension property for coarse homotopies and prove coarse versions of results from algebraic topology involving this property.\nFirst\, we define a notion of a coarse adjunction metric for constructing coarse adjunction spaces. We use this to redefine coarse CW complexes and to construct a coarse version of the mapping cylinder. We then prove various pairs of spaces have the coarse homotopy extension property. In particular\, pairs of coarse CW complexes. We then prove results involving the coarse homotopy extension property\, leading to the result that a coarse map f from X into Y is a coarse homotopy equivalence if and only if the coarse mapping cylinder coarse deformation retracts onto its copy of X. We use this to prove our main result\, a coarse version of Whitehead’s Theorem: If a cellular coarse map f between coarse CW complexes induces isomorphisms between coarse homotopy groups\, then f is a coarse homotopy equivalence. \nAdvisor: Prof. Boris Okun \nCommittee Members:\nProfs. Boris Okun\, Craig Guilbault\, Jeb Willenbring\, Jonah Gaster\, and Chris Hruska
URL:/math/event/phd-dissertation-defense-mr-william-braubach/
LOCATION:EMS Building\, Room E425\, E425; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E425 E425; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E425; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240426T123000
DTEND;TZID=America/Chicago:20240426T133000
DTSTAMP:20260422T174219
CREATED:20240422T160442Z
LAST-MODIFIED:20240422T160442Z
UID:10016159-1714134600-1714138200@uwm.edu
SUMMARY:Graduate Student Colloquium: Alex Moon
DESCRIPTION:Counting Orbits of Defective Parking Functions\nAlex Moon\nPhD Student\nUniversity of Wisconsin-Milwaukee \nParking functions are well-studied objects in combinatorics and representation theory which constitute tuples of preferred parking spots for cars under a linear parking scheme. This talk will generalize to defective parking functions. I will enumerate the orbits of defective parking functions under the action of the symmetric group by characterizing them as nondecreasing tuples and sketching a bijection to standard nondecreasing parking functions. I will also introduce the concept of the conjugate of a nondecreasing parking function in order to simplify the case where the number of cars and spots differ. \nThis is a joint with Pamela E. Harris\, Aaron Ortiz\, Lauren J. Quesada\, Cynthia Marie Rivera Sánchez\, and Dwight A. Williams II.
URL:/math/event/graduate-student-colloquium-alex-moon/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240426T140000
DTEND;TZID=America/Chicago:20240426T150000
DTSTAMP:20260422T174219
CREATED:20240213T185113Z
LAST-MODIFIED:20240213T185113Z
UID:10016143-1714140000-1714143600@uwm.edu
SUMMARY:Colloquium: Fredric Ancel
DESCRIPTION:
URL:/math/event/colloquium-fredric-ancel/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240430T130000
DTEND;TZID=America/Chicago:20240430T140000
DTSTAMP:20260422T174219
CREATED:20240425T192637Z
LAST-MODIFIED:20240425T192637Z
UID:10016162-1714482000-1714485600@uwm.edu
SUMMARY:MS Thesis Defense: Ms. Helen Kafka
DESCRIPTION:Markov Chain Model of Three-Dimensional Daphnia Magna Movement\nMs. Helen Kafka\nUniversity of Wisconsin-Milwaukee \nDaphnia magna make turns through an antennae-whipping action. This action occurs every few seconds\, hence\, during the intervening time\, the animal either remains in place or continues movement roughly along its current course. We view their movement in three dimensions. We divide the movement in the three dimensions into the movement on a two-dimensional lattice and the movement between the different planes. For the movement on the lattice\, we construct a second-order Markov chain model to make predictions about which region of the lattice the animal moves to based on where it was at the last two time points. The movement between the different planes is simulated by a first-order Markov chain. \nAdvisor: Prof. David  Spade \nCommittee Members:\nProfs. David Spade\, Jeb Willenbring\, and Chudamani Poudyal
URL:/math/event/ms-thesis-defense-ms-helen-kafka/
LOCATION:EMS Building\, E408\, 3200 N Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.075931;-87.885538
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building E408 3200 N Cramer St Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3200 N Cramer St:geo:-87.885538,43.075931
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240502T130000
DTEND;TZID=America/Chicago:20240502T150000
DTSTAMP:20260422T174219
CREATED:20240411T204638Z
LAST-MODIFIED:20240429T133426Z
UID:10016155-1714654800-1714662000@uwm.edu
SUMMARY:PhD Dissertation Defense: Mr. Russell Latterman
DESCRIPTION:Bayesian Change Point Detection In Segmented Multi-Group Autoregressive Moving-Average Data For The Study Of COVID-19 In Wisconsin\nMr. Russell Latterman\nUniversity of Wisconsin-Milwaukee \nChangepoint detection involves the discovery of abrupt fluctuations in population dynamics over time. We take a Bayesian approach to estimating points in time at which the parameters of an autoregressive moving average (ARMA) change\, applying a Markov Chain Monte Carlo method. We specifically assume that data may originate from one of two groups. We provide estimates of all multi-group parameters of a model of this form for both simulated and real-world data sets. We include a provision to resolve the problem of confounding ARMA parameter estimates and variance of segment data. We apply our model to identify events that may have contributed to the 2020 and 2021 outbreaks of COVID-19 in Waukesha County\, Wisconsin. \nAdvisor: Prof. David Spade \nCommittee Members:\nProfs. Richard Stockbridge\, Istvan Lauko\, Chao Zhu\, and Vytaras Brazauskas
URL:/math/event/phd-dissertation-defense-mr-russell-latterman/
LOCATION:EMS Building\, Room E424A\, E424A; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E424A E424A; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E424A; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240502T160000
DTEND;TZID=America/Chicago:20240502T170000
DTSTAMP:20260422T174219
CREATED:20240425T191913Z
LAST-MODIFIED:20240425T192108Z
UID:10016160-1714665600-1714669200@uwm.edu
SUMMARY:MS Thesis Defense: Mr. Lucas Fellmeth
DESCRIPTION:Utilizing ARMA Models for Non-Independent Replications of Point Processes\nMr. Lucas Fellmeth\nUniversity of Wisconsin-Milwaukee \nThe use of a functional principal component analysis (FPCA) approach for estimating intensity functions from prior work allows us to obtain component scores of replicated point processes under the assumption of independent replications. We show these component scores can be modeled using classical autoregressive moving average (ARMA) models\, thus allowing us to also apply the FPCA model to non-independent replications. The Divvy bike-sharing system in the city of Chicago is showcased as an application. \nAdvisor: Prof. Daniel Gervini \nCommittee Members:\nProfs. Daniel Gervini\, David Spade\, and Chudamani Poudyal
URL:/math/event/ms-thesis-defense-mr-lucas-fellmeth/
LOCATION:EMS Building\, E408\, 3200 N Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.075931;-87.885538
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building E408 3200 N Cramer St Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3200 N Cramer St:geo:-87.885538,43.075931
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240503T083000
DTEND;TZID=America/Chicago:20240503T090000
DTSTAMP:20260422T174219
CREATED:20240425T192401Z
LAST-MODIFIED:20240425T192401Z
UID:10016161-1714725000-1714726800@uwm.edu
SUMMARY:MS Thesis Defense: Mr. Sven Bergmann
DESCRIPTION:Adding a Third Normal to CLUBB\nMr. Sven Bergmann\nUniversity of Wisconsin-Milwaukee \nThe Cloud Layers Unified By Binormals (CLUBB) model uses the sum of two normal probability density function (pdf) components to represent subgrid variability within a single grid layer of an atmospheric model. This binormal approach\, while computationally efficient\, restricts the model’s ability to capture the full spectrum of potential shapes encountered in real-world atmospheric data. This thesis proposes to introduce a third normal pdf component strategically positioned between the existing two\, significantly enhancing the model’s representational flexibility. This trinormal representation allows for a wider range of grid-layer shapes while permitting analytic solutions for certain higher order moments. The core of this work lies in deriving the necessary mathematical transformations for incorporating the third normal pdf seamlessly into the CLUBB framework. This thesis lists all formulas\, inputs\, and outputs associated with the extended model as well as gives an outline\non how to check those equations. Additionally\, it describes certain asymptotic behavior of the trinormal pdf under various parameter settings. \nAdvisor: Prof. Vince Larson \nCommittee Members:\nProfs. Vince Larson\, Peter Hinow\, and David Spade
URL:/math/event/ms-thesis-defense-mr-sven-bergmann/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240503T133000
DTEND;TZID=America/Chicago:20240503T140000
DTSTAMP:20260422T174219
CREATED:20240411T204952Z
LAST-MODIFIED:20240429T181640Z
UID:10016156-1714743000-1714744800@uwm.edu
SUMMARY:PhD Dissertation Defense: Mr. Dan Noelck
DESCRIPTION:Contraction Rates For McKean-Vlassov Stochastic Differential Equations\nMr. Dan Noelck\nUniversity of Wisconsin-Milwaukee \nThis work focuses on the contraction rates for McKean-Vlasov stochastic differential equations (SDEs)\, McKean-Vlasov Stochastic differential delay equations (SDDEs)\, and path dependent McKean-Vlasov stochastic differential equations.\nUnder suitable conditions on the coefficients of the SDE\, this dissertation derives explicit quantitative contraction rates for the convergence in Wasserstein distances of McKean-Vlasov SDEs using the coupling method. The contraction results are then used to prove a propagation of chaos uniformly in time\, which\nprovides quantitative bounds on convergence rate of interacting particle systems\, and establishes exponential ergodicity for McKean-Vlasov SDEs. The dissertation further develops suitable conditions on the coefficients of the McKean-Vlasov SDDE to obtain a contraction in Wasserstein distance using the coupling method again. These results are used to establish exponential ergodicity for McKean-Vlasov SDDEs. Last the dissertation obtains suitable conditions on the coefficients of the path dependent McKean-Vlasov SDE for a contraction in Wasserstein distance. \nAdvisor: Prof. Chao Zhu \nCommittee Members:\nProfs. Lijing Sun\, Jeb Willenbring\, Richard Stockbridge\, and Peter Hinow
URL:/math/event/phd-dissertation-defense-mr-dan-noelck/
LOCATION:EMS Building\, Room E423\, E423; 3200 N Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E423 E423; 3200 N Cramer St Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E423; 3200 N Cramer St:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240503T140000
DTEND;TZID=America/Chicago:20240503T153000
DTSTAMP:20260422T174219
CREATED:20240422T130711Z
LAST-MODIFIED:20240422T131628Z
UID:10016158-1714744800-1714750200@uwm.edu
SUMMARY:Colloquium: Prof. Genevieve Walsh
DESCRIPTION:Hyperbolic groups\, their boundaries and drilling\nProf. Genevieve Walsh\nProfessor of Mathematics\nTufts University \nWe will define and describe groups with a particular geometry\, hyperbolic groups. We will define the boundary of a hyperbolic group and give many examples. If time permits\, we will define a drilling of a hyperbolic group and explore how this operation changes the boundary. Any new work is joint with Groves\, Haissinsky\, Manning\, Osajda and Sisto.
URL:/math/event/colloquium-prof-genevieve-walsh/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240506T130000
DTEND;TZID=America/Chicago:20240506T140000
DTSTAMP:20260422T174219
CREATED:20240506T153439Z
LAST-MODIFIED:20240506T153439Z
UID:10016163-1715000400-1715004000@uwm.edu
SUMMARY:MS Thesis Defense: Mr. Silas Winnemoeller
DESCRIPTION:A Finite Element Block Modified Backward Euler Method For Solving A One-Dimensional Poisson-Nernst-Planck Ion Channel Model\nMr. Silas Winnemoeller\nUniversity of Wisconsin-Milwaukee \nIn this thesis\, a finite element block modified backward Euler method is introduced to solve a one-dimensional Poisson-Nernst-Planck ion channel (1D PNPic) model. This model is defined as a system of time-dependent nonlinear partial differential equations\, called Poisson-Nernst equations and Poisson equation\, describing the transport of charged ionic species across a cell membrane via an ion channel pore. For an electrolyte with n ionic species\, its numerical solution gives a prediction to n ionic concentration functions and an electrostatic potential function. However\, solving the 1DPNPic model numerically is challenging due to the model’s strong nonlinearity and numerical stability issues. To address the numerical stability issues\, the traditional backward Euler implicit time scheme is often selected to solve the 1DPNPic model but it may be too costly to be practical in application since it has to solve a system of n + 1 strongly nonlinear partial differential equations at each time step. Hence\, its modification becomes necessary to reduce its computing cost while retaining its numerical stability properly. In this thesis\, the new method is constructed by semi-discretization and finite element techniques such that its each time iteration only involves calculation within two blocks with each block only containing two linear differential equations. Consequently\, the new method can reduce the\ncomputing cost of the Euler scheme sharply. In this thesis\, the new method is implemented as a software package in Python based on the finite element library from the FEniCS project. Numerical tests are then done for an electrolyte with two ionic species\, demonstrating the convergence and high performance of the new method. \nAdvisor: Prof. Dexuan Xie \nCommittee Members:\nProfs. Lei Wang\, Vincent Larson\, and Dexuan Xie \n 
URL:/math/event/ms-thesis-defense-mr-silas-winnemoeller/
LOCATION:EMS Building\, Room E416\, 3200 N Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Defenses
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.075931;-87.885538
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E416 3200 N Cramer St Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3200 N Cramer St:geo:-87.885538,43.075931
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240906T123000
DTEND;TZID=America/Chicago:20240906T133000
DTSTAMP:20260422T174219
CREATED:20240903T132255Z
LAST-MODIFIED:20240903T132340Z
UID:10016175-1725625800-1725629400@uwm.edu
SUMMARY:Graduate Student Colloquium: Melissa Beerbower
DESCRIPTION:On the Lucky Sets of Fubini Rankings\nMelissa Beerbower\nLoyola University Chicago \nRecall that Fubini rankings of length n are rankings of n competitors allowing for ties. We can say that the number of rankings\, k\, with k less than or equal to n\, is equal to the number of lucky competitors. A lucky competitor is the first to attain its rank. We enumerate Fubini rankings recursively through fixed sets of lucky competitors. Also recall that unit Fubini rankings are Fubini rankings with at most two competitors for each rank. We enumerate unit Fubini rankings through fixed lucky sets. Our enumerations explain twin coefficients for minimum powers in the lucky polynomial of ell-interval Fubini rankings.
URL:/math/event/graduate-student-colloquium-melissa-beerbower/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240906T140000
DTEND;TZID=America/Chicago:20240906T153000
DTSTAMP:20260422T174219
CREATED:20240826T192017Z
LAST-MODIFIED:20240828T152606Z
UID:10016166-1725631200-1725636600@uwm.edu
SUMMARY:Colloquium: Dr. Rafael S. González D'León
DESCRIPTION:On Whitney numbers of the first and second kind\, or is it the other way around?\nDr. Rafael S. González D’León\nAssistant Professor \nLoyola University Chicago \nAlgebraic combinatorics is centered on the idea that a variety of algebraic objects can be understood using the tools from combinatorics. In this talk\, I will illustrate this idea using a modern example of how combinatorial theories can give us a better understanding on a subject. The story I will tell involves the Whitney numbers of the first and second kind\, which are a pair of invariants of partially ordered sets (posets) that are relevant in several areas of mathematics. One of their most interesting appearances is as the coefficients of a polynomial enumerating proper colorings of a graph (think of colorings of a map where neighboring countries must be distinguishable from each other). They also appear counting regions in the complement of a real hyperplane arrangement. \nI will introduce and give insight into the algebraic and combinatorial objects in this story and share a very curious phenomenon: sometimes the Whitney numbers of the first and second kind of a poset are also the Whitney numbers of the second and first kind\, but of a different poset. Some recent results about this phenomenon could shed light on longstanding questions in the subject.
URL:/math/event/colloquium-dr-rafael-s-gonzalez-dleon/
LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States
CATEGORIES:Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240913T123000
DTEND;TZID=America/Chicago:20240913T133000
DTSTAMP:20260422T174219
CREATED:20240911T143551Z
LAST-MODIFIED:20240911T143551Z
UID:10016178-1726230600-1726234200@uwm.edu
SUMMARY:Community of Practice Kickoff Event
DESCRIPTION:Do you like to talk about teaching? Do you like to socialize with other people in the department? Do you like pear bread? Do you have nothing better to do on a Friday afternoon? \nBring your thoughts:\nHave you done something cool in your class that you’d love to share with others?\nDo you have something you’d like to try in your class?\nWould you like to learn about cool things to do in your class? \nCome join us for the first event of the Math Community of Practice! We’ll have snacks!
URL:/math/event/community-of-practice-kickoff-event/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240913T140000
DTEND;TZID=America/Chicago:20240913T153000
DTSTAMP:20260422T174219
CREATED:20240823T155120Z
LAST-MODIFIED:20240827T182002Z
UID:10016165-1726236000-1726241400@uwm.edu
SUMMARY:Colloquium: Prof. Laurel Ohm
DESCRIPTION:PDE Problems in Thin Filament Hydrodynamics\nProf. Laurel Ohm\nAssistant Professor of Mathematics\nUniversity of Wisconsin-Madison \nMany fundamental biophysical processes\, from cell division to cellular motility\, involve dynamics of thin structures immersed in a very viscous fluid. Various popular models have been developed to describe this fluid-structure interaction mathematically\, but much of our understanding of these models is at the level of numerics and formal asymptotics. Here we will discuss some of the interesting issues that arise in developing the PDE theory of thin filament hydrodynamics\, as well as the insights this analysis perspective can shed on the underlying biophysics.
URL:/math/event/colloquium-prof-laurel-ohm/
LOCATION:EMS Building\, EMS E495\, 3200 Cramer St\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240920T123000
DTEND;TZID=America/Chicago:20240920T133000
DTSTAMP:20260422T174219
CREATED:20240917T155920Z
LAST-MODIFIED:20240917T155920Z
UID:10016179-1726835400-1726839000@uwm.edu
SUMMARY:Graduate Student Colloquium: Joe Paulson
DESCRIPTION:Introduction to (Partial) Z-Boundaries\nJoe Paulson\nPhD Graduate Student\nUniversity of Wisconsin – Milwaukee \nIn this talk\, I’ll share an abridged story of Z-boundaries and their utility in group theory. Throughout\, we’ll revisit some main characters (compactifications\, homotopy groups\, group actions) and introduce some new ones (group boundaries\, shape invariance). As our story seemingly resolves\, we’ll adapt and refocus on a theory of partial Z-boundaries (ie. Z_n-boundaries) and identify some preliminary results.
URL:/math/event/graduate-student-colloquium-joe-paulson/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240920T140000
DTEND;TZID=America/Chicago:20240920T153000
DTSTAMP:20260422T174219
CREATED:20240826T192058Z
LAST-MODIFIED:20240828T152515Z
UID:10016167-1726840800-1726846200@uwm.edu
SUMMARY:Colloquium: Prof. Bob Eisenberg
DESCRIPTION:Ion Channels\, the Ultimate Multiscale Device\nProf. Bob Eisenberg\nProfessor of Biomathematics and Physiology\nDepartment of Physiology & Biophysics\, Rush University\, Chicago IL \nProteins called ion channels are the ultimate multiscale device\, the ‘nanovalves of life’ controlling most biological functions the way transistors control computers. A handful of atoms control biological function on the macroscale\, so analysis must link atomic distances of 10-10m with biological distances of 1 meter. Channels are of such biological and medical importance that hundreds of scientists study them every day and thousands of talks on channels are given at (for example) the annual meeting of the Biophysical Society (USA). Channels conduct ions (spherical charges like Na+ \, K+ \, Ca2+ \, and Cl- with diameter ~ 0.2 nm) through a narrow tunnel of permanent charge (‘doping’) with diameter ~ 0.6 nm. Channels can be studied in the tradition of physical science. PNP equations familiar in physics form an adequate initial model of current voltage relations in many types of channels under many conditions\, and can be extended to describe ‘chemical’ phenomena like selectivity with some success. Variational models and methods are needed to deal with the coupling of different fields. Ionic channels are studied with the powerful techniques of molecular biology. Atoms (and thus charges) can be substituted a few at a time and the location of every atom can be determined in favorable cases. Ion channels are one of the few living systems of great importance where natural biological function can be well described by a tractable set of equations. Mathematics and mathematicians are needed to apply these equations to the hundreds of channels of biological and clinical significance.
URL:/math/event/colloquium-bob-eisenberg/
LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States
CATEGORIES:Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240927T123000
DTEND;TZID=America/Chicago:20240927T133000
DTSTAMP:20260422T174219
CREATED:20240924T180747Z
LAST-MODIFIED:20240924T185718Z
UID:10016180-1727440200-1727443800@uwm.edu
SUMMARY:Graduate Student Colloquium: Alexander Moon
DESCRIPTION:Kohnert Properties of Northeast Diagrams\nAlexander Moon\nGraduate Student\nUniversity of Wisconsin – Milwaukee \nKohnert polynomials and posets are combinatorial objects with deep representation theoretic meaning\, generalizing both Schubert polynomials and Demazure characters\, i.e.\, key polynomials. In this talk I will explore what Kohnert posets and polynomials are in general\, then I will discuss some recent results centering on the Kohnert properties of “northeast” diagrams. I will present some conditions for the boundedness and rankedness of a “northeast” Kohnert poset and present a surprising connection between certain minimal elements and key diagrams. There will be a worksheet. This is a joint work with Aram Bingham\, Beth Anne Castellano\, Kimberly Hadaway\, Reuven Hodges\, Yichen Ma\, and Kyle Salois that originated at this year’s GRWC.
URL:/math/event/graduate-student-colloquium-alexander-moon/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241004T123000
DTEND;TZID=America/Chicago:20241004T133000
DTSTAMP:20260422T174219
CREATED:20240925T143928Z
LAST-MODIFIED:20240925T143928Z
UID:10016181-1728045000-1728048600@uwm.edu
SUMMARY:Graduate Student Colloquium: Jillian Cervantes
DESCRIPTION:(t\,r) Broadcast Domination of the Truncated Square Tiling Graph\nJillian Cervantes\nGraduate Student\nUniversity of Wisconsin – Milwaukee \nThis talk will introduce graph domination theory and a generalization called (t\,r) broadcast domination. We study a family of graphs that arise as a finite subgraph of the truncated square tiling\, which utilizes regular squares and octagons to tile the Euclidean plane. For positive integers m and n\, we let Hm\,n be the graph consisting of m rows of n octagons (cycle graph on 8 vertices). For all t ≥ 2\, we provide lower and upper bounds for the (t\, 1) broadcast domination number for Hm\,n for all m\, n ≥ 1. We give exact (2\, 1) broadcast domination numbers for Hm\,n when (m\, n) ∈ {(1\, 1)\, (1\, 2)\, (1\, 3)\, (1\, 4)\, (2\, 2)}. We also consider the infinite truncated square tiling\, and we provide constructions of infinite (t\, r) broadcasts for (t\, r) ∈ {(2\, 1)\, (2\, 2)\, (3\, 1)\, (3\, 2)\, (3\, 3)\, (4\, 1)}. Using these constructions we give upper bounds on the density of these broadcasts i.e.\, the proportion of vertices needed to (t\, r) broadcast dominate this infinite graph. We end with some directions for future study
URL:/math/event/graduate-student-colloquium-jillian-cervantes/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241004T140000
DTEND;TZID=America/Chicago:20241004T153000
DTSTAMP:20260422T174219
CREATED:20240826T192136Z
LAST-MODIFIED:20240828T152858Z
UID:10016168-1728050400-1728055800@uwm.edu
SUMMARY:Colloquium: Dr. Zhaosheng Feng
DESCRIPTION:Parabolic System of Aggregation Formation in Bacterial Colonies\nDr. Zhaosheng Feng\nEndowed Chair Professor of Mathematics\nUniversity of Texas Rio Grande Valley \nThe goal of this talk is to study a fourth-order nonlinear parabolic system with dispersion for describing bacterial aggregation. Analytical solution of traveling wave is found by taking into account the dispersion coefficient. Numerically\, we demonstrate that the initial concentration of bacteria in the form of a random distribution over time transforms into a periodic wave\, followed by a transition to a stationary solitary wave without dispersion.
URL:/math/event/colloquium-zhaosheng-feng/
LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States
CATEGORIES:Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241011T123000
DTEND;TZID=America/Chicago:20241011T133000
DTSTAMP:20260422T174219
CREATED:20241008T163200Z
LAST-MODIFIED:20241008T163200Z
UID:10016184-1728649800-1728653400@uwm.edu
SUMMARY:Graduate Student Colloquium: Kelsey Brouwer
DESCRIPTION:Combinatorial Models for Some Generalized McMullen Maps in the Case of Two Bounded Critical Orbits\nKelsey Brouwer\nPhD Student\nUniversity of Wisconsin – Milwaukee \nThe family of generalized McMullen maps R(z)= z^n + b + a/z^n has two independent critical orbits. We consider the case in which one critical value lies in the immediate basin of an attracting cycle and the other critical value eventually lands in that immediate basin. Computer-generated images of the dynamical plane suggest the presence of both baby quadratic Julia sets and some sets which appear to be modifications of those. We present combinatorial models of the dynamics which help to explain this phenomena.
URL:/math/event/graduate-student-colloquium-kelsey-brouwer/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241011T140000
DTEND;TZID=America/Chicago:20241011T153000
DTSTAMP:20260422T174219
CREATED:20241001T133357Z
LAST-MODIFIED:20241001T133417Z
UID:10016182-1728655200-1728660600@uwm.edu
SUMMARY:Colloquium: Dr. Daniel Stoertz
DESCRIPTION:Baby Mandelbrot Sets for Maximally Generalized McMullen Maps\nDr. Daniel Stoertz\nVisiting Assistant Professor of Mathematics\nSt. Olaf College \nIn Complex Dynamics\, we study the iteration of holomorphic or meromorphic functions on the complex plane or the Riemann sphere. Of particular interest is the behavior of the critical orbits of function families with one or more parameters. The simplest of such families\, z^2 +c\, is well-known to define the famous Mandelbrot set fractal as the set of c-values for which the unique critical orbit is bounded. In this talk we will examine the function family R(z) = z^n +b +a/(z^d)\, and we will explore old and new results establishing the location of baby Mandelbrot sets in parameter space for increasingly general versions of this family. In the most general case\, which we call maximally generalized McMullen maps\, this family has multiple independent critical orbits\, and the dynamics in this case are not yet well understood.
URL:/math/event/colloquium-dr-daniel-stoertz/
LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States
CATEGORIES:Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20241018
DTEND;VALUE=DATE:20241020
DTSTAMP:20260422T174219
CREATED:20240629T204300Z
LAST-MODIFIED:20241008T132858Z
UID:10016164-1729209600-1729382399@uwm.edu
SUMMARY:ICMA-IX
DESCRIPTION:  \n \nInternational Conference on Mathematical Modeling and Analysis of Populations in Biological Systems \nThe broad\, general theme of the conference is the formulation\, validation\, analysis and simulation of mathematical models for the spatiotemporal dynamics of biological populations. A special emphasis at this ninth conference will be placed on multiple scale dynamics in ecology\, epidemiology\, and systems biology; many biological systems operate on multiple spatial and temporal scales and the incorporation of these scales may be essential for capturing system dynamics. Specific topics include\, but are not limited to: \n\nImmuno-epidemiological and vector-host systems\nMolecular-cellular modeling in systems biology and oncology\nBiological invasions and persistence\nAdaption and evolutionary dynamics\nBiological systems operating on multiple spacial or temporal scales\n\nICMA-IX aims to accomplish at least three broad tasks: scientific progress\, scientific collaboration\, and the training of a future generation of mathematical biologists. The conference will thus have a significant impact\, both nationally and internationally\, on future research in biomathematics and mathematical biology. The collaborative opportunities provided to researchers at all points of the career path from undergraduate and graduate students\, to early-career faculty\, to established senior researchers will establish new directions and avenues for the national and international research community. \nHosts: \nPeter Hinow\nProfessor\nEMS\, E491\nhinow@uwm.edu \nGabriella Pinter\nProfessor\nEMS\, E479\ngapinter@uwm.edu
URL:/math/event/icma-ix/
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241018T123000
DTEND;TZID=America/Chicago:20241018T133000
DTSTAMP:20260422T174219
CREATED:20241008T150918Z
LAST-MODIFIED:20241008T150918Z
UID:10016183-1729254600-1729258200@uwm.edu
SUMMARY:Graduate Student Colloquium: Gregory Mwamba
DESCRIPTION:Blowup of the Nonlinear Klein-Gordon Equation in FLRW Spacetimes\nGregory Mwamba\nGraduate Student\nUniversity of California – Merced \nThe nonlinear Klein-Gordon equations are a class of important evolution equations that describe the movement of spinless relativistic particles\, which can lend understanding in many physical applications. In this talk we will demonstrate a sufficient condition for blowup of the nonlinear Klein-Gordon equation\, with arbitrarily positive initial energy in Friedmann-Lemaître-Robertson-Walker spacetimes. This is accomplished using an established concavity method that has been employed for similar PDEs in Minkowski space. This proof relies on the energy inequality associated with this equation. \nThis talk will be online at the following zoom link: https://wisconsin-edu.zoom.us/j/94983351854 and will also be streamed in EMS E495.
URL:/math/event/graduate-student-colloquium-gregory-mwamba/
LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Graduate Student Colloquia
ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu
X-TRIBE-STATUS:
GEO:43.0758771;-87.8858312
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E495 E495; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E495; 3200 N Cramer St.:geo:-87.8858312,43.0758771
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20241018T140000
DTEND;TZID=America/Chicago:20241018T153000
DTSTAMP:20260422T174219
CREATED:20240826T192205Z
LAST-MODIFIED:20241008T153529Z
UID:10016169-1729260000-1729265400@uwm.edu
SUMMARY:Colloquium: Prof. Qingshuo Song
DESCRIPTION:Long-Time Behaviors of Stochastic Linear-Quadratic Optimal Control Problems\nProf. Qingshuo Song\nAssociate professor\nWorcester Polytechnic Institute \nIn this talk\, we will discuss the asymptotic behavior of the solution to a linear-quadratic stochastic optimal control problems. By establishing a connection between the ergodic cost problem and the so-called cell problem in the homogenization of Hamilton-Jacobi equations\, we reveal the turnpike properties of the linear-quadratic stochastic optimal control problems from various perspectives.
URL:/math/event/colloquium-qingshuo-song/
CATEGORIES:Colloquia
X-TRIBE-STATUS:
END:VEVENT
END:VCALENDAR