BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Richárd Rimányi (UNC Chapel Hill) DTSTART:20210415T120000Z DTEND:20210415T140000Z DTSTAMP:20260423T005758Z UID:AGNTISTA/34 DESCRIPTION:Title: Stable envelopes\, 3d mirror symmetry\, bow varieties\nby Richárd R imányi (UNC Chapel Hill) as part of Algebraic Geometry and Number Theory seminar - ISTA\n\n\nAbstract\nThe role played by Schubert classes in the g eometry of Grassmannians is played by the so-called stable envelopes in th e geometry of Nakajima quiver varieties. Stable envelopes come in three fl avors: cohomological\, K theoretic\, and elliptic stable envelopes. We wil l show examples\, and explore their appearances in enumerative geometry an d representation theory. In the second part of the talk we will discuss `` 3d mirror symmetry for characteristic classes’’\, namely\, the fact th at for certain pairs of seemingly unrelated spaces the elliptic stable env elopes `match’ in some concrete (but non-obvious) sense. We will meet Ch erkis bow varieties\, a pool of spaces (conjecturally) closed under ``3d m irror symmetry for characteristic classes’’. The combinatorics necessa ry to play Schubert calculus on bow varieties includes binary contingency tables\, tie diagrams\, and the Hanany-Witten transition.\n LOCATION:https://researchseminars.org/talk/AGNTISTA/34/ END:VEVENT END:VCALENDAR