BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Mathematical Sciences - ECPv6.15.18//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Mathematical Sciences X-ORIGINAL-URL:/math X-WR-CALDESC:Events for Mathematical Sciences REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20240310T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20241103T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20250309T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20251102T070000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 TZNAME:CDT DTSTART:20260308T080000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 TZNAME:CST DTSTART:20261101T070000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250415T153000 DTEND;TZID=America/Chicago:20250415T170000 DTSTAMP:20260419T001710 CREATED:20250324T183250Z LAST-MODIFIED:20250421T130347Z UID:10016216-1744731000-1744736400@uwm.edu SUMMARY:MS Thesis Defense: Mr. Gregor Grote DESCRIPTION:Homomesy: Theory\, Applications\, and Explorations\nGregor Grote\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nHomomesy is a phenomenon that occurs in combinatorial structures when the average value of a statistic over each orbit is the same. This talk explores the theory of homomesy for arbitrary sets\, functions\, and statistics. I provide general results about homomesy and show how these can be used to solve problems in combinatorics more efficiently. \nAdvisor:\nPamela E. Harris \nCommittee Members:\nSuzanne L. Boyd\nDavid Spade URL:/math/event/ms-thesis-defense-mr-gregor-grote/ LOCATION:EMS Building\, Room W434\, W434; 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 W434 W434; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=W434; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250416T163000 DTEND;TZID=America/Chicago:20250416T173000 DTSTAMP:20260419T001710 CREATED:20250114T155133Z LAST-MODIFIED:20250319T140802Z UID:10016202-1744821000-1744824600@uwm.edu SUMMARY:Marden Lecture: Dr. Trachette Jackson DESCRIPTION:Mobilizing Mathematics for the Fight Against Cancer\nDr. Trachette Jackson\nProfessor of Mathematics and Associate Vice President for Research – Strategic Partnerships and Inclusive Excellence\nUniversity of Michigan \nIt is an exciting time to work in the interdisciplinary field of Mathematical Oncology. Even TIME Magazine agrees\, “A team-based\, cross-disciplinary approach to cancer research is upending tradition and delivering results faster.” Mathematical oncologists apply mathematical and computational modeling approaches to every aspect of cancer biology\, from tumor initiation to malignant spread to treatment response. This talk will highlight a suite of mathematical models from the past and present designed to improve the efficacy of drug treatment strategies for cancer. Combined with existing and newly generated experimental data\, these mathematical models are poised to enhance the ability to combine promising drugs for clinical trials. This type of interdisciplinary science can reduce the time and costs associated with transitioning novel therapeutics approaches from “equations to bench to bedside.” \nReception to follow in LEC URL:/math/event/marden-lecture-dr-trachette-jackson-univ-of-mi/ 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:20250416T173000 DTEND;TZID=America/Chicago:20250416T190000 DTSTAMP:20260419T001710 CREATED:20250114T155242Z LAST-MODIFIED:20250114T155242Z UID:10016203-1744824600-1744830000@uwm.edu SUMMARY:Marden Lecture Banquet DESCRIPTION: URL:/math/event/marden-lecture-banquet/ 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:20250417T130000 DTEND;TZID=America/Chicago:20250417T140000 DTSTAMP:20260419T001710 CREATED:20250114T155559Z LAST-MODIFIED:20250312T210355Z UID:10016204-1744894800-1744898400@uwm.edu SUMMARY:Marden Colloquium: Dr. Trachette Jackson DESCRIPTION:Agent-based Modeling of Dysregulated Cell Signaling and the Tumor-Immune Landscape Predicts New Possibilities for Combination Therapy\nDr. Trachette Jackson\nProfessor of Mathematics and Associate Vice President for Research – Strategic Partnerships and Inclusive Excellence\nUniversity of Michigan \nMathematical models\, specifically agent-based models (ABMs)\, have shown recent successes in uncovering the multiscale dynamics that shape the trajectory of cancer. They have enabled the optimization of treatment methods and the identification of novel therapeutic strategies. To assess the combined effects on tumor growth and the immune response of monoclonal antibodies that boost the immune system (immunotherapy) and small molecule inhibitors (SMI) that counteract the effect of driver mutations\, we build and analyze an ABM that captures key facets of tumor heterogeneity and immune cell dynamics\, their spatial interactions\, and their response to therapeutic pressures. Our model predicts that under certain conditions\, immunotherapy alone is optimal; in others\, immunotherapy followed by mutation-targeted therapy is best. These results suggest that optimal treatment depends on the strength of cellular signaling pathways and highlight the need to quantify mutation-dependent cell signaling and the fitness advantage conferred on cancer cells harboring these mutations. URL:/math/event/marden-colloquium-dr-trachette-jackson/ 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:20250418T123000 DTEND;TZID=America/Chicago:20250418T133000 DTSTAMP:20260419T001710 CREATED:20250416T205729Z LAST-MODIFIED:20250416T205729Z UID:10016220-1744979400-1744983000@uwm.edu SUMMARY:Graduate Student Colloquium: Noah Mitchell\, Levi Montee\, and Harrison Piehowski DESCRIPTION:The RSA Algorithm: Demonstration and Proofs\nNoah Mitchell\, Levi Montee\, and Harrison Piehowski\nGraduate Students\nUniversity of Wisconsin-Milwaukee \nIn this talk\, we will explore the RSA algorithm\, one of the most widely used cryptographic systems. Starting with a brief history of its development by Ron Rivest\, Adi Shamir\, and Leonard Adleman in the late 1970s\, we will then demonstrate RSA’s effectiveness through practical examples and mathematical proofs. Our presentation will include an interactive role-play\, where two presenters use RSA to securely send messages\, while a third attempts to decrypt them without the private key\, showcasing RSA’s robustness in real-world scenarios. URL:/math/event/graduate-student-colloquium-noah-levi-harrison/ 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:20250425T123000 DTEND;TZID=America/Chicago:20250425T133000 DTSTAMP:20260419T001710 CREATED:20250423T131241Z LAST-MODIFIED:20250423T131241Z UID:10016223-1745584200-1745587800@uwm.edu SUMMARY:Graduate Student Colloquium: Levi Montee DESCRIPTION:Partitioning the Natural Numbers with Fibonacci-like Sequences\nLevi Montee\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nFamously seen in the displacement of seeds in a sunflower\, the branching of tree limbs or enumerating results in a variety of combinatorics problems\, the Fibonacci sequence has become one of the most recognizable sequences in mathematics. Beginning f0 = 0\, f1 = 1\, and continuing fn+1 = fn + fn-1\, this simple recurrence relation has been well studied for centuries. In this talk\, we will investigate sequences determined by the same recurrence relation given alternative starting points. We attempt to classify these sequences\, see which familiar Fibonacci properties are kept intact\, and examine when two such sequences share terms. Ultimately\, we aim to find a set of disjoint Fibonacci-like sequences that partition the natural numbers\, and see how these might be useful in solving particular logic games/puzzles. URL:/math/event/graduate-student-colloquium-levi-montee/ 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:20250425T133000 DTEND;TZID=America/Chicago:20250425T143000 DTSTAMP:20260419T001710 CREATED:20250413T191318Z LAST-MODIFIED:20250421T130410Z UID:10016219-1745587800-1745591400@uwm.edu SUMMARY:MS Thesis Defense: Mr. Jackson Thurmond DESCRIPTION:Generalized Linear Model approach to the Prediction of the outcome of Mixed Martial Arts Fights\nMr. Jackson Thurmond\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nMixed martial arts is a complex combat sport that encompasses striking\, grappling and submissions. In a sport where fights can be won by finishing a fight or go to decision there is a multitude of factors that can influence the outcome of a fight. In an effort to determine which factors are statistically significant to a fight a generalized linear model approach was selected. Since mixed martial arts is a sport in which two competitors fight\, and one is declared a winner\, the result of a fight can be thought of a binary classification problem. \nAdvisor:\nDavid Spade \nCommittee Members:\nDavid Spade\, Chao Zhu\, and Lijing Sun URL:/math/event/ms-thesis-defense-mr-thurmund-jackson/ LOCATION:EMS Building\, Room E408\, 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:43.0758771;-87.8858312 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E408 E408; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E408; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250425T140000 DTEND;TZID=America/Chicago:20250425T150000 DTSTAMP:20260419T001710 CREATED:20250113T161237Z LAST-MODIFIED:20250421T135206Z UID:10016200-1745589600-1745593200@uwm.edu SUMMARY:Colloquium: Prof. Caroline Terry DESCRIPTION:Measuring Combinatorial Complexity via Regularity Lemmas\nProf. Caroline Terry\nAssociate Professor\nUniversity of Illinois-Chicago \nMany tools have been developed in combinatorics to study global structure in finite graphs. One such tool is called Szemerédi’s regularity lemma\, which gives a structural decomposition for any large finite graph. Beginning with work of Alon-Fischer-Newman\, Lovász-Szegedy\, and Malliaris-Shelah\, it has been shown over the last 15 years that regularity lemmas can be used to detect structural dichotomies in graphs\, and that these dichotomies have deep connections to model theory. One striking example is a dichotomy in the size of regular partitions\, first observed by Alon-Fox-Zhao. Specifically\, if a hereditary graph property H has finite VC-dimension\, then results of Alon-Fischer-Newman and Lovász-Szegedy imply all graphs in H have regular partitions of size polynomial is 1/ε. On the other hand\, if H has infinite VC-dimension\, then results of Gowers and Fox-Lovász show there are graphs in H whose smallest 1/ε-regular partition has size at least an exponential tower of height polynomial in 1/ε. In this talk\, I present several analogous dichotomies in the setting of hereditary properties of 3-uniform hypergraphs. URL:/math/event/colloquium-caroline-terry/ LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States CATEGORIES:Colloquia X-TRIBE-STATUS:canceled END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250501T170000 DTEND;TZID=America/Chicago:20250501T190000 DTSTAMP:20260419T001710 CREATED:20250421T131317Z LAST-MODIFIED:20250421T131317Z UID:10016222-1746118800-1746126000@uwm.edu SUMMARY:MS Thesis Defense: Mr. Kyle Piontek DESCRIPTION:Mathematical Modeling Prompts in the Illustrative Mathematics Algebra 2 Course\nKyle Piontek\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nAn analysis of the mathematical modeling in the modeling prompts from the Illustrative Mathematics Algebra 2 curriculum. In this presentation we will discuss how well the mathematical modeling process is represented by the tasks provided by the curriculum. \nAdvisor:\nDr. Kevin McLeod \nCommittee Members:\nDr. Kevin McLeod\, Dr. Gabriella Pinter\, and Dr. Jeb Willenbring URL:/math/event/ms-thesis-defense-mr-kyle-piontek/ LOCATION:EMS Building\, W109 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:20250502T140000 DTEND;TZID=America/Chicago:20250502T150000 DTSTAMP:20260419T001710 CREATED:20250421T130321Z LAST-MODIFIED:20250421T130321Z UID:10016221-1746194400-1746198000@uwm.edu SUMMARY:MS Thesis Defense: Mr. Luis Hasenauer DESCRIPTION:Bootstrap-Based Robustness Analysis of Parameter Optimization in Climate Models Using QuadTune\nLuis Hasenauer\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nTuning the parameters of climate models is essential for improving their performance\, but this process is often complicated by structural limitations\, overfitting\, and trade-offs between different regions or variables. In my thesis\, I combined the QuadTune optimization framework with nonparametric bootstrap resampling to analyze parameter uncertainty and identify tuning conflicts. \nAdvisor:\nVincent Larson \nCommittee Members:\nDavid Spade\, Daniel Gervini URL:/math/event/ms-thesis-defense-mr-luis-hasenauer/ LOCATION:EMS Building\, Room E408\, 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:43.0758771;-87.8858312 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E408 E408; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E408; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250502T140000 DTEND;TZID=America/Chicago:20250502T150000 DTSTAMP:20260419T001710 CREATED:20250429T195832Z LAST-MODIFIED:20250429T200112Z UID:10016225-1746194400-1746198000@uwm.edu SUMMARY:Colloquium: Prof. Yangjin Kim DESCRIPTION:Cytokine Shield Formation in Tumor Growth by Blocking Chemotactic Migration of T Cells in Response to CXCL12 from Senescent Tumor Cells\nProf. Yangjin Kim\nProfessor\nBrown University \nCellular senescence can induce dual effects (promotion or inhibition) on cancer progression. While immune cells naturally respond and migrate toward various chemotactic sources from the tumor mass\, various factors including senescent tumor cells (STCs) in the tumor microenvironment (TME) may affect this chemotactic movement. In this work\, we investigate the mutual interactions between the tumor cells and the immune cells (T cells and macrophages) that either inhibit or facilitate tumor growth by developing a mathematical model that consists of taxis-reaction-diffusion equations and receptor kinetics for the key players in the interaction network. We first apply a mathematical model to a transwell Boyden chamber invasion assay used in the experiments to illustrate that STCs can play a pivotal role in negating immune attack through tight regulation of intra- and extra-cellular signaling molecules. The mathematical model consists of a system of parabolic-hyperbolic PDEs with two separate model domains based on experimental setting empirical data. Neuman B.C. on the outer boundary and Interface B.C. from homogenization of holes of various sizes on porous membrane are assigned. In particular\, we show that senescent tumor cells in cell cycle arrest can block intratumoral infiltration of CD8+ T cells by secreting a high level of CXCL12\, which leads to significant reduction its receptors\, CXCR4\, on T cells\, and thus impaired chemotaxis. Macrophages also play an important role in mediating or inhibiting given signaling pathways between different cells in TME. The predictions of nonlinear responses to CXCL12 were in good agreement with experimental data. We tested several hypotheses on immune-tumor interactions under various biophysical- and biochemical- conditions in the tumor microenvironment and developed new concepts for anti-tumor strategies targeting senescence induced immune impairment. \n  URL:/math/event/colloquium-yaangjin-kim/ 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:20250503T100000 DTEND;TZID=America/Chicago:20250503T110000 DTSTAMP:20260419T001710 CREATED:20250423T134414Z LAST-MODIFIED:20250423T134414Z UID:10016224-1746266400-1746270000@uwm.edu SUMMARY:MS Thesis Defense: Mrs. Jennifer Hartzheim DESCRIPTION:A Mini History of Geometry with an Emphasis on Transformational Geometry and an Analysis of Illustrative Mathematics Geometry Curriculum\nMrs. Jennifer Hartzheim\nUniversity of Wisconsin-Milwaukee \nA brief look at the history of geometry\, with special attention to transformational geometry. Followed by a discussion of my analysis of Illustrative Mathematics to determine if the curriculum uses a transformational approach to teaching geometry. \nAdvisor:\nDr. Kevin McLeod \nCommittee Members:\nDr. Kevin McLeod\, Dr. Suzanne Boyd\, and Dr. Jeb Willenbring URL:/math/event/ms-thesis-defense-mrs-jennifer/ LOCATION:EMS Building\, Room E495\, E495; 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 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:20250509T113000 DTEND;TZID=America/Chicago:20250509T123000 DTSTAMP:20260419T001710 CREATED:20250505T161927Z LAST-MODIFIED:20250505T161927Z UID:10016226-1746790200-1746793800@uwm.edu SUMMARY:MS Thesis Defense: Mr. Micah Hesketh DESCRIPTION:Compartmental Ordinary Differential Equation Model of the Amyloid-beta Cascade Hypothesis in Transgenic TgF-344AD Rats\nMr. Micah Hesketh\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nAlzheimer’s disease is a devastating neurodegenerative disease whose etiology is poorly understood and for which current treatments provide modest control of symptoms. There are many different hypotheses which seek to explain the cause of this disease\, one of which is the Amyloid-beta cascade hypothesis. To better investigate the causes and progression of the disease\, animal models have been developed\, notably the transgenic TgF344-AD rat. We combine observations on the accumulation of amyloid-beta\, changes in neuronal density\, and a decline in cognitive performance in rats with a simple compartmental ordinary differential equation model based on the Amyloid-beta cascade hypothesis. \nAdvisor:\nPeter Hinow \nCommittee Members:\nDr. Peter Hinow\, Dr. Gabriella Pinter\, and Dr. Lijing Sun URL:/math/event/ms-thesis-defense-mr-micah-hesketh/ LOCATION:EMS Building\, Room E408\, 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:43.0758771;-87.8858312 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E408 E408; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E408; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250516T140000 DTEND;TZID=America/Chicago:20250516T150000 DTSTAMP:20260419T001710 CREATED:20250507T133644Z LAST-MODIFIED:20250507T134001Z UID:10016228-1747404000-1747407600@uwm.edu SUMMARY:Colloquium: Prof. Christian Wolf DESCRIPTION:  \nMeasures of Maximal Entropy on Coded Shift Spaces: Uniqueness and Computability\nProf. Christian Wolf\nExecutive Officer and Professor\nCUNY Graduate Center and City College \nIn this talk\, we present results about the uniqueness and computability of measures of maximal entropy on coded shift spaces. A coded shift space is defined as the closure of all bi-infinite concatenations of words from a fixed countable generating set. We derive sufficient conditions for the uniqueness of measures of maximal entropy based on the partition of the coded shift into its concatenation set (sequences that are concatenations of generating words) and its residual set (sequences added under the closure). We also discuss flexibility results for the entropy on the concatenation and residual sets. Next\, we present a local structure theorem for intrinsically ergodic coded shift spaces\, which shows that our results apply to a larger class of coded shift spaces compared to previous works by Climenhaga\, Climenhaga and Thompson\, and Pavlov. Finally\, if time permits\, we discuss the computability (in the sense of computable analysis) of measures of maximal entropy for coded shift spaces. The results presented in this talk are joint work with Tamara Kucherenko and Martin Schmoll. \n  \n  URL:/math/event/colloquium-prof-christian-wolf/ 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:20250519T160000 DTEND;TZID=America/Chicago:20250519T180000 DTSTAMP:20260419T001710 CREATED:20250505T163059Z LAST-MODIFIED:20250505T163336Z UID:10016227-1747670400-1747677600@uwm.edu SUMMARY:MS Thesis Defense: Mr. Cheri Janardhanan DESCRIPTION:Exploring the Development of Function Concepts in the Illustrative Mathematics Curriculum\nMr. Cheri Janardhanan\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nThis thesis examines the evolution of function concepts within the Illustrative\nMathematics (IM) curriculum\, focusing on how these concepts are introduced\,\ndeveloped\, and assessed from Grade 8 through secondary school. By analyzing\ncurriculum materials\, instructional strategies\, and student outcomes\, this study\naims to provide insights into the effectiveness of the IM approach in fostering a\ndeep understanding of functions among high school students. \nAdvisor:\nKevin McLeod URL:/math/event/ms-thesis-defense-mr-cheri-janardhanan/ LOCATION:EMS Building\, Room E408\, 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:43.0758771;-87.8858312 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E408 E408; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E408; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250611T143000 DTEND;TZID=America/Chicago:20250611T163000 DTSTAMP:20260419T001710 CREATED:20250604T182125Z LAST-MODIFIED:20250604T182125Z UID:10016229-1749652200-1749659400@uwm.edu SUMMARY:PhD Dissertation Defense: Mr. Steffen Domke DESCRIPTION:Convergence Of A Numerical Scheme For Optimal Stopping Of A Diffusion Over A Finite Time-Horizon\nMr. Steffen Domke\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nThis dissertation establishes an approximation scheme for finite time-horizon\nstopping problems involving a singular stochastic process on a compact state\nspace\, characterized by a singular martingale problem. The stopping problem\nis converted to a linear program (LP) with infinitely many constraints and\nvariables having infinite degrees of freedom. \nTo obtain a numerical solution\, the infinite-dimensional LP is converted\ninto a finite LP. The original LP is approximated by a sequence of finite LPs\,\nlimiting to both a finite set of constraints and a finite-dimensional solution\nspace. The value of an optimal approximate solution is shown to be arbitrarily\nclose to the optimal value of original LP\, and hence of the stopping probem\,\nwith increasing refinement of the approximation. Feasibility of the approximate\nsolutions is guaranteed due weak convergence of measures\, but only in the limit.\nThe problem of pricing an American floating strike lookback call option can be\nreformulated to fit the models covered by this dissertation. The price and the\nstopping boundary can therefore be approximated using this scheme. \nAdvisor:\nRichard Stockbridge \nCommittee Members:\nDavid Spade\, Lei Wang\, Jeb Willenbring\, and Chao Zhu URL:/math/event/phd-dissertation-defense-mr-steffen-domke/ LOCATION:EMS Building\, Room W434\, W434; 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 W434 W434; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=W434; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250807T140000 DTEND;TZID=America/Chicago:20250807T160000 DTSTAMP:20260419T001710 CREATED:20250725T141802Z LAST-MODIFIED:20250730T151929Z UID:10016230-1754575200-1754582400@uwm.edu SUMMARY:PhD Dissertation Defense: Mr. Joe Paulson DESCRIPTION:Theory of Z_n – Structures\nMr. Joe Paulson\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nIn this defense\, we discuss the boundaries of Type F_n groups; those being groups whose K(G\,1) complex has a finite n-skeleton. The boundaries we develop extend the notion of Z-boundaries to what we call Z_n-boundaries. This extension centers around groups no longer acting geometrically on contractible spaces\, but instead n-connected spaces. Immediately this means the major theorems of “Boundary Swapping” and “Shape Equivalence of Z-Boundaries” will need revision\, but a more subtle point to be discussed is that the category of spaces must also be generalized. \nAfter discussing the foundation work for a theory of Z_n-boundaries\, we end with an exploration how these new structures can be related to other well-known compactifications such as the one-point compactification\, end-point compactification\, and Z-compactifications. \nAdvisor:\nCraig Guilbault \nCommittee Members:\nBoris Okun\, Chris Hruska\, Jonah Gaster\, and Pamela Harris URL:/math/event/phd-dissertation-defense-mr-joe-paulson/ LOCATION:EMS Building\, Room E408\, 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:43.0758771;-87.8858312 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=EMS Building Room E408 E408; 3200 N Cramer St. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=E408; 3200 N Cramer St.:geo:-87.8858312,43.0758771 END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250808T140000 DTEND;TZID=America/Chicago:20250808T160000 DTSTAMP:20260419T001710 CREATED:20250808T010452Z LAST-MODIFIED:20250808T010452Z UID:10016232-1754661600-1754668800@uwm.edu SUMMARY:PhD Dissertation Defense: Mr. Shenyan Pan DESCRIPTION:Doubly Stochastic Model With Covariates For Replicated Poisson Point Processes\nMr. Shenyan Pan\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nPoisson point processes (PPPs) are powerful tools for modeling random point occurrences in multidimensional spaces\, with applications across various fields. Although the traditional literature has focused on single realizations\, replicated point processes are becoming increasingly common due to the growing availability of complex data. This dissertation develops a doubly stochastic model for replicated PPPs that incorporates covariates\, extending latent component models to capture external effects. The proposed model expresses the log-intensity function as the sum of a mean function and latent component scores that vary with covariates. To ensure identifiability\, component scores are constrained to be zero-mean and uncorrelated via centering and orthogonality. Parameter estimation is performed using penalized maximum likelihood\, employing Newton–Raphson updates and the Laplace approximation for conditional distributions. Simulation studies assess the model’s stability across various covariate structures (linear and nonlinear)\, baseline rates\, and sample sizes. The results demonstrate decreasing error with increasing sample size\, confirming the estimators’ consistency. The model is applied to real data from the Divvy bicycle-sharing system in Chicago\, analyzing daily usage at a representative station. The results reveal a nonlinear relationship between temperature and ridership\, with peak usage occurring at moderate temperatures and declines observed under extreme heat or cold. This modeling framework improves the interpretability and predictive accuracy of PPPs with covariates\, offering practical insights for applications such as fleet allocation in bicycle-sharing systems. \nAdvisor:\nProf. Daniel Gervini \nCommittee Members:\nProf. Lei Wang\, Prof. Chao Zhu\, Prof. David Spade\, and Prof. Vytaras Brazauskas \nLink to Event URL:/math/event/phd-dissertation-defense-mr-shenyan-pan/ CATEGORIES:Graduate Student Defenses ORGANIZER;CN="The Department of Mathematical Sciences":MAILTO:math-staff@uwm.edu X-TRIBE-STATUS: LOCATION:https://teams.microsoft.com/l/meetup-join/19%3aCQyl6Y73Ps7zxWXrM3dRP8rS7Q89Bvw2sceTNhSLlUw1%40thread.tacv2/1754451851629?context=%7b%22Tid%22%3a%220bca7ac3-fcb6-4efd-89eb-6de97603cf21%22%2c%22Oid%22%3a%2234947e74-60a7-40f3-ae30-4a6cd4dc57b7%22%7d END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250811T133000 DTEND;TZID=America/Chicago:20250811T153000 DTSTAMP:20260419T001710 CREATED:20250730T140303Z LAST-MODIFIED:20250730T140303Z UID:10016231-1754919000-1754926200@uwm.edu SUMMARY:PhD Dissertation Defense: Mr. Marco Vaassen DESCRIPTION:A Bootstrap Goodness-of-Fit Test for Parametric Survival Models\nMr. Marco Vaassen\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nIn many scientific disciplines\, finding a suitable model compatible with real-world observations is the basis for statistical inference and prediction. In survival analysis\, this task is further complicated by censoring. This dissertation introduces a new bootstrap approach to goodness-of-fit testing for parametric survival models\, based on the Kaplan–Meier process with estimated parameters. The test statistic compares the nonparametric Kaplan–Meier estimator to a fitted parametric model\, quantifying deviations from the null via functionals that yield Kolmogorov–Smirnov or Cramér–von Mises-type tests. We establish the asymptotic correctness of our method by showing that the original and bootstrap test statistics have the same weak limit under the null. The result is a consistent\, easily implementable framework for assessing model fit in censored settings. \nAdvisor:\nProf. Richard Stockbridge\, Prof. Gerhard Dikta \nCommittee Members:\nProf. Richard Stockbridge\, Prof. Gerhard Dikta\, Prof. Chao Zhu\, Prof. David Spade\, and Prof. Vincent Larson URL:/math/event/phd-dissertation-defense-mr-marco-vaassen/ LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, 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:20250905T123000 DTEND;TZID=America/Chicago:20250905T133000 DTSTAMP:20260419T001710 CREATED:20250902T193116Z LAST-MODIFIED:20250902T193116Z UID:10016234-1757075400-1757079000@uwm.edu SUMMARY:Community of Practice Kickoff DESCRIPTION:Date: September 5\, 2025 \nTime: 12:30-1:30 \nRoom: E 495 \nJoin us for the first Community of Practice meeting of the semester\, stop by to say “Hi” to colleagues as we wrap up Week 1. \nDuring this event\, we will pull some grab bag questions and discuss the Community of Practice organization\, schedule\, and topics for this semester. \nBring any of your ideas! Light snacks will be provided. \nWhat is the Community of Practice?\nThe Community of Practice is a space for everyone in the department (lecturers\, GTAs\, faculty) to come together and have chats\, professional development\, speakers\, workshops\, and more related to teaching and learning. If you would like to be involved in any planning\, please email Hayley Nathan (henathan@uwm.edu). URL:/math/event/community-of-practice-kickoff/ LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250905T140000 DTEND;TZID=America/Chicago:20250905T160000 DTSTAMP:20260419T001710 CREATED:20250902T193003Z LAST-MODIFIED:20250902T193945Z UID:10016233-1757080800-1757088000@uwm.edu SUMMARY:Department Ice Cream Social DESCRIPTION:Date: September 5\, 2025 \nTime: 2:00pm to 4:00pm \nRoom: E 495 \nJoin us for the first-ever Mathematical Sciences Department ice cream social! URL:/math/event/department-icecream-social/ LOCATION:EMS Building\, E495\, 3200 N Cramer St\, Milwaukee\, WI\, United States X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250912T150000 DTEND;TZID=America/Chicago:20250912T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016235-1757689200-1757694600@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-09-12/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250919T150000 DTEND;TZID=America/Chicago:20250919T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016236-1758294000-1758299400@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-09-19/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20250926T123000 DTEND;TZID=America/Chicago:20250926T133000 DTSTAMP:20260419T001710 CREATED:20250923T134626Z LAST-MODIFIED:20250923T134626Z UID:10016249-1758889800-1758893400@uwm.edu SUMMARY:Graduate Student Colloquium: Kimberly Hadaway DESCRIPTION:Parking Completions and Volumes of Polytopes\nKimberly Hadaway\nGraduate Student\nIowa State University \nParking functions correspond with preferences of n cars which enter sequentially to park on a one-way street where (1) each car parks in the first available spot greater than or equal to its preference and (2) all cars successfully park. We generalize parking functions to parking completions: Here\, we are given that some cars have already parked in a set of spots\, which are indexed in a vector t. We then consider a preference vector c\, where len(t)+len(c)=n. If all cars can park\, we say that c is a parking completion. Adeniran\, et al. (2020) state an open problem which connects the number of parking completions to the volumes of Pitman-Stanley polytopes by explicit computation on small values of n. In this talk\, we provide a partial solution to this open problem by exploring edge cases. URL:/math/event/graduate-student-colloquium-kimberly-hadaway-2/ LOCATION:EMS Building\, Room E495\, E495; 3200 N Cramer St.\, Milwaukee\, WI\, 53211\, United States CATEGORIES:Graduate Student Colloquia 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:20250926T150000 DTEND;TZID=America/Chicago:20250926T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016237-1758898800-1758904200@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-09-26/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251003T150000 DTEND;TZID=America/Chicago:20251003T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016238-1759503600-1759509000@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-10-03/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251010T140000 DTEND;TZID=America/Chicago:20251010T153000 DTSTAMP:20260419T001710 CREATED:20251006T192316Z LAST-MODIFIED:20251006T192316Z UID:10016250-1760104800-1760110200@uwm.edu SUMMARY:Colloquium: Dr. Dexuan Xie DESCRIPTION:Recent Advances in Nonlocal Dielectric Continuum Models for Predicting Protein and Ion Channel Electrostatics\nDr. Dexuan Xie\nProfessor\nUniversity of Wisconsin-Milwaukee \nThe calculation of electrostatics for proteins and ion channels is a fundamental challenge in structural biology\, computational biochemistry\, biophysics\, and mathematical biology. Traditional dielectric continuum models\, such as the Poisson–Boltzmann equation and its variants\, are widely used for this calculation. However\, their prediction accuracy often deteriorates near highly charged biomolecular surfaces because they neglect the polarization correlations of water molecules. To address these limitations\, a nonlocal dielectric continuum modeling approach was introduced roughly four decades ago. Over the past decade\, this approach has seen substantial theoretical and computational advances\, largely driven by our group’s work under support from the National Science Foundation. \nIn this seminar\, I will present our nonlocal dielectric theory and report our recent progress in developing nonlocal dielectric continuum models and finite element solvers for proteins and ion channels. I will also compare the predictions of our novel nonlocal models with those of the traditional local models and present numerical results demonstrating the efficiency of our solvers and the high performance of our software package. This work is a collaboration with my students\, Liam Jemison and Matthew Stahl. It has been partially supported by the National Science Foundation under award DMS-2153376 and by the Simons Foundation under research award 711776. URL:/math/event/colloquium-dr-dexuan-xie/ 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:20251010T150000 DTEND;TZID=America/Chicago:20251010T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016239-1760108400-1760113800@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-10-10/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251017T150000 DTEND;TZID=America/Chicago:20251017T163000 DTSTAMP:20260419T001710 CREATED:20250908T151335Z LAST-MODIFIED:20250908T151335Z UID:10016240-1760713200-1760718600@uwm.edu SUMMARY:MS Exam Prep Sessions DESCRIPTION:Come join our Algebra & Analysis Prep Sessions to review key concepts\, practice problems\, and build confidence for the department’s Master’s Preliminary Exams! Sessions will start on September 12th and run until December 12th. \nAnalysis Session\nFacilitated by: Liam\nfrom 3:00 – 4:30\nin EMS W434 \nAlgebra Session\nFacilitated by: Stephen\nfrom 3:00 – 4:30\nin EMS E408 URL:/math/event/ms-exam-prep-sessions/2025-10-17/ X-TRIBE-STATUS: END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Chicago:20251024T123000 DTEND;TZID=America/Chicago:20251024T133000 DTSTAMP:20260419T001710 CREATED:20251020T151334Z LAST-MODIFIED:20260115T185205Z UID:10016253-1761309000-1761312600@uwm.edu SUMMARY:Graduate Student Colloquium: Jillian Cervantes DESCRIPTION:The Axiom of Choice and Non-Lebesgue Measurable Sets\nJillian Cervantes\nGraduate Student\nUniversity of Wisconsin-Milwaukee \nIn this expository talk\, we explore an interesting connection between the axiom of choice and the existence of non-Lebesgue measurable subsets of \mathbb{R}. We state the axiom of choice and discuss its meaning and significance before reviewing properties of measures\, Lebesgue measure\, and Lebesgue measurable sets. The talk concludes with a construction which uses the axiom of choice to prove the existence of non-Lebesgue measurable sets. URL:/math/event/graduate-student-colloquium-jillian-cervantes-2/ CATEGORIES:Graduate Student Colloquia X-TRIBE-STATUS: END:VEVENT END:VCALENDAR