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DTSTART;TZID=America/Chicago:20240315T123000
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DTSTAMP:20260423T012625
CREATED:20240311T171530Z
LAST-MODIFIED:20240311T172157Z
UID:10016148-1710505800-1710509400@uwm.edu
SUMMARY:Graduate Student Colloquium: Dorian Smith
DESCRIPTION:On the Lucky and Displacement Statistics of Stirling Permutations\nDorian Smith\nPhD Student\nUniversity of Minnesota Twin Cities \nStirling permutations are parking functions. We investigate two parking function statistics in the context of these objects: lucky cars and displacement. Among our results\, we consider two extreme cases: extremely lucky Stirling permutations (those with maximally many lucky cars) and extremely unlucky Stirling permutations (those with exactly one lucky car). We show that the number of extremely lucky Stirling permutations of order n is the Catalan number\, and the number of extremely unlucky Stirling permutations is (n−1)!. \nThis is a joint work with Laura Colmenarejo\, Aleyah Dawkins\, Jennifer Elder\, Pamela E. Harris\, Kimberly J.Harry\, Selvi Kara\, and Bridget Eileen Tenner.
URL:/math/event/graduate-student-colloquium-dorian-smith-2/
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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DTSTART;TZID=America/Chicago:20240315T140000
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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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