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DTSTART;TZID=America/Chicago:20240403T163000
DTEND;TZID=America/Chicago:20240403T173000
DTSTAMP:20260422T130506
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:20260422T130506
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:20260422T130506
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
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240412T140000
DTEND;TZID=America/Chicago:20240412T150000
DTSTAMP:20260422T130506
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:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240419T123000
DTEND;TZID=America/Chicago:20240419T133000
DTSTAMP:20260422T130506
CREATED:20240415T180913Z
LAST-MODIFIED:20240415T180913Z
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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
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240423T130000
DTEND;TZID=America/Chicago:20240423T141500
DTSTAMP:20260422T130506
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:20260422T130506
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
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240426T123000
DTEND;TZID=America/Chicago:20240426T133000
DTSTAMP:20260422T130506
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:20260422T130506
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:20260422T130506
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
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