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DTSTART;TZID=America/Los_Angeles:20250401T121500
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DTSTAMP:20260421T021220
CREATED:20250206T191602Z
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SUMMARY:Permutation pattern avoidance\, alternating sign matrices\, and asymptotics (Justin Troyka\, Cal State LA)
DESCRIPTION:A big area in combinatorics over the last several decades has been the study of pattern-avoiding permutations\, whose enumeration is exciting and mysterious. Alternating sign matrices (ASMs) are a generalization of permutations whose study in combinatorics has also been exciting and mysterious. In this talk\, I will explain some new asymptotic results involving the number of ASMs that avoid a given permutation pattern\, from my joint work with Mathilde Bouvel\, Eric Egge\, Rebecca Smith\, and Jessica Striker. I will also show some of the highlights in the histories of both pattern-avoiding permutations and ASMs.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-justin-troyka-cal-state-la/
LOCATION:Estella 2113
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
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DTSTART;TZID=America/Los_Angeles:20250401T150000
DTEND;TZID=America/Los_Angeles:20250401T160000
DTSTAMP:20260421T021220
CREATED:20250214T211604Z
LAST-MODIFIED:20250224T221209Z
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SUMMARY:Claremont Topology Seminar: Scott Taylor (Colby College)
DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Scott Taylor (Colby College) \nTitle: Genus 1 Bridge Number of Satellite Knots in Lens Spaces \nAbstract: In the mid-1950s\, Horst Schubert introduced two ideas which turned out to have lasting impact in knot theory: satellite knots and bridge number. A Satellite knot is a knot which is tied in the shape of another knot (its companion). Wrapping number is one way of measuring how complicated the satellite knot is with respect to its companion. Bridge number is an invariant for knots and links in the 3-sphere. Schubert showed that the bridge number of a satellite knot is at least the wrapping number times the bridge number of the companion. I’ll give an overview of recent joint work with Maggy Tomova where we extend Schubert’s result to knots in lens spaces.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-scott-taylor-colby-college/
LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States
CATEGORIES:Topology Seminar
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DTSTART;TZID=America/Los_Angeles:20250402T161500
DTEND;TZID=America/Los_Angeles:20250402T173000
DTSTAMP:20260421T021220
CREATED:20250125T044958Z
LAST-MODIFIED:20250328T163248Z
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SUMMARY:CCMS Colloquium: (Scott Taylor\, Colby College\, Maine)
DESCRIPTION:Speaker:  Scott Taylor\, Professor of Mathematics\, Colby College\, Maine \nTitle:  Sums and Symmetries \nAbstract: Adding is one of the fundamental mathematical operations and we like it so much\, we can’t help but add all kinds of things including knots\, surfaces\, and 3-dimensional spaces. Symmetry is also a fundamental mathematical concern. How well do sums and symmetries play together? In this talk\, I’ll survey some of the ways in which\, in low-dimensions\, sums and symmetries are frenemies: sometimes it all works beautifully and other times\, well\, it’s complicated. \nBio: Scott is a geometric topologist who studies knots and 3-dimensional spaces. He is the producer of Sum Camp\, a summer day camp for public elementary school children that uses the arts and math games to help instill a basic sense of numeracy. He is also the author of the forthcoming textbook “Introduction to Mathematics: Number\, Space\, and Structure” from the American Mathematical Society.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-scott-taylor-colby-college-maine/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
GEO:34.0999157;-117.7142668
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DTSTART;TZID=America/Los_Angeles:20250405T100000
DTEND;TZID=America/Los_Angeles:20250405T120000
DTSTAMP:20260421T021220
CREATED:20250304T085447Z
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SUMMARY:GEMS April 5th Session
DESCRIPTION:This GEMS session will be facilitated by Professor Bahar Acu from Pitzer College.\n\n\nTitle: The Hole Truth: When is a Coffee Mug a Donut?\n\nAbstract:  In mathematics\, topology is the study of properties of shapes that remain unchanged when shapes are bent\, stretched\, or deformed—so long as they aren’t torn or punctured. To a mathematician studying topology\, a donut and a coffee cup (with a handle) are considered the “same” shape because one can be continuously deformed into the other without cutting or gluing.\n\n\nIn this interactive session\, we will explore the concept of shape equivalence by counting holes—an essential feature in topology. Using Play-Doh and Wikki Stix\, we will model different shapes\, test their flexibility\, and determine whether they can be transformed into one another. Join us for a hands-on journey into the fascinating world of topology\, where a simple twist in perspective can redefine how we see the shapes around us!
URL:https://colleges.claremont.edu/ccms/event/gems-april-5th-session/
LOCATION:Shanahan 1480\, Harvey Mudd College\, 301 Platt Blvd.\, Claremont\, CA\, 91711\, United States
CATEGORIES:GEMS
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