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PRODID:https://evenements.uqam.ca
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BEGIN:VEVENT
UID:3856@https://evenements.uqam.ca
DTSTART:20181012T143000Z
SEQUENCE:4
TRANSP:OPAQUE
DTEND:20181012T143000Z
URL:https://evenements.uqam.ca/evenements/seminaire-du-lacim-an-introductio
n-to-quasisymmetric-schur-functions/3856?date=2018-10-12_13-30-00
LOCATION:UQAM - Pavillon Président-Kennedy (PK) (201\, avenue du Présiden
t-Kennedy\, Montréal )
SUMMARY:Séminaire du LaCIM:«An introduction to quasisymmetric Schur funct
ions»
CLASS:PUBLIC
DESCRIPTION:Conférencier:Stephanie van Willigenburg (UBC)\n\n\nAbstract:In
algebraic combinatorics a central area of study is Schur functions. These
functions were introduced early in the last century with respect to repre
sentation theory\, and since then have become important in other areas suc
h as quantum physics and algebraic geometry. These functions also form a b
asis for the algebra of symmetric functions\, which in turn forms a subalg
ebra of the algebra of quasisymmetric functions that itself impacts areas
from category theory to card shuffling. Despite this strong connection\, t
he existence of a natural quasisymmetric refinement of Schur functions was
considered unlikely for many years. In this talk we will meet such a natu
ral refinement of Schur functions\, called quasisymmetric Schur functions.
Furthermore\, we will see how these quasisymmetric Schur functions refine
many well-known Schur function properties\, with combinatorics that stron
gly reflects the classical case including diagrams\, walks in the plane\,
and pattern avoidance in permutations. This talk will require no prior kno
wledge of any of the above terms.\n\nMot-clés : Mathématiques\n\n
CATEGORIES:Séminaire
DTSTAMP:20190822T131745Z
CREATED:20181009T135311Z
LAST-MODIFIED:20181010T151341Z
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