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Thursday, February 20, 2025
4:00 PM - 5:00 PM
Linde Hall 387

Number Theory Seminar

Monodromy results for abelian surfaces and K3 surfaces with bad reduction
Tejasi Bhatnager, Department of Mathematics, University of Wisconsin - Madison,

We present a local monodromy theorem for abelian surfaces and K3 surfaces using explicit geometry of moduli spaces in characteristic p. This generalizes the work of Igusa, who studied the Galois representation associated to the p-power torsion points of the universal elliptic curve around a supersingular point of the modular curve, to the setting of orthogonal Shimura varieties.

For more information, please contact Math Department by phone at 626-395-4335 or by email at mathinfo@caltech.edu.