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SUMMARY:Martina Lanini (Università di Roma Tor Vergata)
DTSTART:20200623T144500Z
DTEND:20200623T154500Z
DTSTAMP:20260424T133727Z
UID:GRT-2020/13
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GRT-2020/13/
 ">Singularities of Schubert varieties within a right cell</a>\nby Martina 
 Lanini (Università di Roma Tor Vergata) as part of Geometric Representati
 on Theory conference\n\n\nAbstract\nWe describe an algorithm which takes a
 s input any pair of\npermutations and gives as output two permutations lyi
 ng in the same\nKazhdan-Lusztig right cell. There is an isomorphism betwee
 n the\nRichardson varieties corresponding to the two pairs of permutations
 \nwhich preserves the singularity type. This fact has applications in the\
 nstudy of $W$-graphs for symmetric groups\, as well as in finding examples
 \nof reducible associated varieties of sln-highest weight modules\, and\nc
 omparing various bases of irreducible representations of the symmetric\ngr
 oup or its Hecke algebra. This is joint work with Peter McNamara.\n
LOCATION:https://researchseminars.org/talk/GRT-2020/13/
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