BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Richárd Rimányi (University of North Carolina) DTSTART:20210406T180000Z DTEND:20210406T190000Z DTSTAMP:20260423T024746Z UID:AG-Davis/25 DESCRIPTION:Title: Stable envelopes\, 3d mirror symmetry\, bow varieties\nby Richárd R imányi (University of North Carolina) as part of UC Davis algebraic geome try seminar\n\n\nAbstract\nThe role played by Schubert classes in the geom etry of Grassmannians is played by the so-called stable envelopes in the g eometry of Nakajima quiver varieties. Stable envelopes come in three flavo rs: cohomological\, K theoretic\, and elliptic stable envelopes. We will s how examples\, and explore their appearances in enumerative geometry and r epresentation theory. In the second part of the talk we will discuss 3d mi rror symmetry for characteristic classes’’\, namely\, the fact that fo r certain pairs of seemingly unrelated spaces the elliptic stable envelope s `match’ in some concrete (but non-obvious) sense. We will meet Cherkis bow varieties\, a pool of spaces (conjecturally) closed under 3d mirror s ymmetry for characteristic classes. The combinatorics necessary to play Sc hubert calculus on bow varieties includes binary contingency tables\, tie diagrams\, and the Hanany-Witten transition.\n LOCATION:https://researchseminars.org/talk/AG-Davis/25/ END:VEVENT END:VCALENDAR