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DTSTART;TZID=America/Chicago:20240301T140000
DTEND;TZID=America/Chicago:20240301T150000
DTSTAMP:20260421T044108
CREATED:20240213T184338Z
LAST-MODIFIED:20240219T143038Z
UID:10016137-1709301600-1709305200@uwm.edu
SUMMARY:Colloquium : Dr. Selvi Kara
DESCRIPTION:Combinatorial Resolutions of Monomial Ideals\nDr. Selvi Kara\nAssistant Professor of Mathematics\nBryn Mawr College \nOne of the central problems in commutative algebra concerns understanding the structure of an ideal in a polynomial ring. Abstractly\, an ideal’s structure can be expressed through an object called its minimal resolution\, but there is no explicit method to obtain a minimal resolution in general\, even for the simpler and fundamental class known as monomial ideals. \nIn this talk\, we will focus on resolutions of monomial ideals. In particular\, I will introduce a new combinatorial method that provides a resolution of any monomial ideal using tools from discrete Morse theory.
URL:/math/event/colloquium-dr-selvi-kara/
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
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20240308T140000
DTEND;TZID=America/Chicago:20240308T150000
DTSTAMP:20260421T044108
CREATED:20240213T184556Z
LAST-MODIFIED:20240229T211321Z
UID:10016138-1709906400-1709910000@uwm.edu
SUMMARY:Colloquium: Dr. Emmanuel Asante-Asamani
DESCRIPTION:A Mechanochemical Model of Cell Migration in Confined Environments\nDr. Emmanuel Asante-Asamani\nAssistant Professor of Mathematics\nClarkson University \nEukaryotic cells can move in confined environments by using pressure driven protrusions of their cell membrane\, a motility mechanism known as blebbing. Blebbing has been observed to facilitate the movement of tumor cells and some cancer cells during metastasis. Many questions remain unanswered about how cells translate mechanical cues from their environment into coordinated movement during blebbing. Of particular interest is how proteins that link the cell membrane to the cortex regulate the size and frequency of blebs under different levels of environmental confinement. In this talk\, I will present a multiscale model of bleb expansion that treats the cell as a viscous fluid encased by a viscoelastic boundary\, whose mechanical properties are regulated by dynamic structural and motor proteins. Numerical simulation of this model supports experimental data suggesting\, contrary to intuition\, that weakening the adhesion of the cell membrane to the cortex produces smaller and less frequent blebs.
URL:/math/event/colloquium-dr-emmanuel-asante-asamani/
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:20240315T140000
DTEND;TZID=America/Chicago:20240315T150000
DTSTAMP:20260421T044108
CREATED:20240213T184840Z
LAST-MODIFIED:20240311T132445Z
UID:10016141-1710511200-1710514800@uwm.edu
SUMMARY:Colloquium: Dr. Jean-Pierre Mutunguha
DESCRIPTION:The Dynamical view of Free-by-Cyclic Groups\nDr. Jean Pierre Mutanguha\nInstructor\nPrinceton \nFree-by-cyclic groups can be defined as mapping tori of free group automorphisms. I will discuss various dynamical properties of automorphisms that turn out to be group invariants of the corresponding free-by-cyclic groups (e.g. growth type). In particular\, certain dynamical hierarchical decompositions of an automorphism determine canonical hierarchical decompositions of its mapping torus.
URL:/math/event/colloquium-jean-pierre-mutunguha/
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
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DTSTART;TZID=America/Chicago:20240329T140000
DTEND;TZID=America/Chicago:20240329T150000
DTSTAMP:20260421T044108
CREATED:20240319T161218Z
LAST-MODIFIED:20240319T161218Z
UID:10016149-1711720800-1711724400@uwm.edu
SUMMARY:Colloquium: Dr. Jay Pantone
DESCRIPTION:Experimental Methods in Combinatorics\nDr. Jay Pantone\nAssistant Professor of Mathematics\nMarquette University \nWhat number comes next in the sequence\n1\, 2\, 4\, 8\, 16\, 32\, … ? \nHow about\n1\, 2\, 3\, 5\, 8\, 13\, … ? \nOr maybe\n1\, 3\, 14\, 84\, 592\, 4659\, … ? \nMany questions in combinatorics have the form “How many objects are there that have size n and that satisfy certain properties?” For example\, there are n! permutations (rearrangements) of n distinct objects\, there are 2^n binary strings of length n\, and the number of sequences of n coin flips that never have two tails in a row is the nth Fibonacci number. The “counting sequence” of a set of objects is the sequence a_0\, a_1\, a_2\, …\, where a_n is the number of objects of size n. \nAs a result of theoretical advances and more powerful computers\, it is becoming common to be able to compute a large number of initial terms of the counting sequence of a set of objects that you’d like to study. From these initial terms\, can you guess future terms? Can you guess a formula for the nth term in the sequence? Can you guess the asymptotic behavior as n tends to infinity? \nRigorously\, you can prove basically nothing from just some known initial terms. But\, perhaps surprisingly\, there are several empirical techniques that can use these initial terms to shed some light on the nature of a sequence. \nAs we talk about two such techniques — automated conjecturing of generating functions\, and the method of differential approximation — we’ll exhibit their usefulness through a variety of combinatorial topics\, including chord diagrams\, permutation classes\, and inversion sequences.
URL:/math/event/colloquium-dr-jay-pantone/
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
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