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SUMMARY:Raymond Cheng (Columbia)
DTSTART:20210716T190000Z
DTEND:20210716T200000Z
DTSTAMP:20260407T230847Z
UID:agstanford/55
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/agstanford/5
 5/">$q$-bic Hypersurfaces</a>\nby Raymond Cheng (Columbia) as part of Stan
 ford algebraic geometry seminar\n\n\nAbstract\nLet’s count: 1\, $q$\, $q
 +1$\; here\, $q$ is a power of a prime $p$. In this talk\, I will sketch a
 n analogy between the geometry of a class of hypersurfaces over a field of
  positive characteristic $p$\, which I call $q$-bic hypersurfaces\, and th
 e geometry of low degree hypersurfaces\, such as quadrics and cubics\, ove
 r the complex numbers. For instance\, a smooth $q$-bic threefold has a smo
 oth Fano surface of lines\, and the intermediate Jacobian of the threefold
  is isogenous to the Albanese of the Fano surface.\n
LOCATION:https://researchseminars.org/talk/agstanford/55/
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