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DTSTART:20200308T070000
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DTSTART:20201101T060000
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DTSTART;TZID=America/Toronto:20210304T130000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-seminar-ralph-kaufmann
SUMMARY:Algebraic Combinatorics Seminar - Ralph Kaufmann
CLASS:PUBLIC
DESCRIPTION:TITLE: Graphs and combinatorics with a relationship to algebr
 a\,\ngeometry and physics\n\nSpeaker:\n Ralph Kaufmann\n\nAffiliation:\n P
 urdue\n\nZoom:\n Contact Karen Yeats\n\nABSTRACT:\n\nSeveral algebraic an
 d geometric structures are most naturally encoded\nvia graphs. These inclu
 de restrictions\, such as trees\, and\ndecorations\, such as planar graphs
 \, ribbon graphs\, bi-partite graphs\n(aka. hypergraphs)\, directed versio
 ns\, etc. Particularly nice\nproperties satisfy some kind of hereditary co
 ndition. This affords a\ndual perspective. Either as (nested) subsets and 
 decomposition\, or as\ncomposition\, gluing locally. Both views relate to 
 category theory\,\nalgebra\, and combinatorics in terms of finite sets\, c
 ospans etc. We\nwill give examples of these phenomena and provide a genera
 l\nbackground.
DTSTAMP:20260406T150116Z
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