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SUMMARY:Chengxi Wang (UCLA)
DTSTART:20221202T200000Z
DTEND:20221202T210000Z
DTSTAMP:20260407T214641Z
UID:agstanford/100
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/agstanford/1
 00/">Calabi-Yau varieties of large index</a>\nby Chengxi Wang (UCLA) as pa
 rt of Stanford algebraic geometry seminar\n\n\nAbstract\nA projective vari
 ety $X$ is called Calabi-Yau if its canonical divisor is $\\mathbb{Q}$-lin
 early equivalent to zero. The smallest positive integer $m$ with $mK_X$ li
 nearly equivalent to zero is called the index of $X$. Using ideas from mir
 ror symmetry\, we construct Calabi-Yau varieties with index growing doubly
  exponentially with dimension. We conjecture they are the largest index in
  each dimension based on evidence in low dimensions. We also give Calabi-Y
 au varieties with large orbifold Betti numbers or small minimal log discre
 pancy. Joint work with Louis Esser and Burt Totaro.\n\nThe synchronous dis
 cussion for Chengxi Wang’s talk is taking place not in zoom-chat\, but a
 t https://tinyurl.com/2022-12-02-cw (and will be deleted after ~3-7 days).
 \n
LOCATION:https://researchseminars.org/talk/agstanford/100/
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