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SUMMARY:Siddarth Kannan (Brown University)
DTSTART:20220401T190000Z
DTEND:20220401T200000Z
DTSTAMP:20260407T215021Z
UID:agstanford/91
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/agstanford/9
 1/">Moduli of relative stable maps to $\\mathbf{P}^1$: cut-and-paste invar
 iants</a>\nby Siddarth Kannan (Brown University) as part of Stanford algeb
 raic geometry seminar\n\n\nAbstract\nI will give an introduction to the mo
 duli space of genus zero rubber stable maps to $\\mathbf{P}^1$\, relative 
 to 0 and infinity\, with fixed ramification profiles. Then I will discuss 
 two recent results on the topology of these moduli spaces. The first conce
 rns a chamber structure for the classes of these moduli spaces in the Grot
 hendieck ring of varieties. The second gives a recursive algorithm for the
  calculation of the Euler characteristic\, in the case where the maps are 
 fully ramified over zero\, and unramified over infinity. If time permits\,
  I will also discuss some potential future directions.\n\nThe synchronous 
 discussion for Siddarth Kannan’s talk is taking place not in zoom-chat\,
  but at https://tinyurl.com/2022-04-01-sk (and will be deleted after ~3-7 
 days).\n
LOCATION:https://researchseminars.org/talk/agstanford/91/
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