BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260601T072527EDT-8718E4TLMU@132.216.98.100 DTSTAMP:20260601T112527Z 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:/mathstat/channels/event/david-anderson-ohio-state -university-355891 END:VEVENT END:VCALENDAR