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SUMMARY:Roger Casals (UC Davis)
DTSTART:20210513T150000Z
DTEND:20210513T160000Z
DTSTAMP:20260423T005757Z
UID:notts_ag/57
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/57/
 ">Positroid links and braid varieties</a>\nby Roger Casals (UC Davis) as p
 art of Online Nottingham algebraic geometry seminar\n\n\nAbstract\nI will 
 discuss a class of affine algebraic varieties associated to positive braid
 s\, their relation to open positroid strata in Grassmannians and their clu
 ster structures. First\, I will introduce the objects of interest\, with t
 he necessary ingredients\, and motivate the problem at hand. Then we will 
 discuss in detail how the study of a DG-algebra associated to certain link
 s may allow us to better understand the algebraic (and cluster) geometry o
 f Richardson and positroid varieties. Explicit examples of this interplay 
 between topology and algebraic geometry will be illustrated. At a more con
 ceptual level\, the talk brings to bear insight from symplectic topology t
 o better understand positroid varieties. This is joint work with E. Gorsky
 \, M. Gorsky and J. Simental.\n
LOCATION:https://researchseminars.org/talk/notts_ag/57/
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