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DESCRIPTION:\n	\n		\n			\n				\n					\n						\n							\n								\n									\n										\n											\n												TITLE / TITRE\n\n												Degeneracy loci in geo
 metry and combinatorics\n													\n													aBSTRACT / RÉSUMÉ \n\n												Given a matrix of homogen
 eous polynomials\, there is a “degeneracy locus” of points where specified
  submatrices drop rank. These loci are ubiquitous\, and formulas for their
  degrees go back to Cayley and Salmon in the mid-1800s. The search for mor
 e general and refined degree formulas led to a rich interaction between ge
 ometry and combinatorics in the late 20th century\, and that interplay con
 tinues today. I will describe recent and new formulas relating the geometr
 y of degeneracy loci with the combinatorics of Schubert polynomials\, incl
 uding some ongoing joint work with William Fulton.\n\n												\n													PLACE /LIEU\n													Hybri
 de - UQAM Salle / Room PK-5115\, Pavillon Président-Kennedy\n\n												\n													ZOOM\n													htt
 ps://uqam.zoom.us/j/82844931676\n											\n										\n									\n								\n							\n						\n					\n				\n			\n		\n	\n\n
DTSTART:20240308T203000Z
DTEND:20240308T213000Z
SUMMARY:David Anderson (Ohio State University)
URL:https://www.mcgill.ca/mathstat/channels/event/david-anderson-ohio-state
 -university-355891
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