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Title:
Large Compact Subvarieties of A_g

Speaker:
Jacob Tsimerman

Abstract:
(Joint with Samuel Grushevsky, Gabriele Mondello, Riccardo Salvati Manni) We determine the maximal dimension of a compact subvariety of the moduli space of principally polarized abelian varieties Ag for any value of g. For g<16 the dimension is g−1, while for g≥16, it is determined by the larged dimensional compact Shimura subvariety, which we determine. Our methods rely on deforming the boundary using special varieties, and functional transcendence theory.

Link:
https://www.ias.edu/video/large-compact-subvarieties-ag