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Galois sections and the method of Lawrence-Venkatesh

SEMINARS: NUMBER THEORY

When: February 9, 2022
3:00 pm - 4:00 pm
Where: Science Center 507
Address: 1 Oxford Street, Cambridge, MA 02138, United States
Speaker: Alexander Betts - Harvard

Grothendieck’s Section Conjecture posits that the set of rational points on a smooth projective curve Y of genus at least two should be equal to a certain “section set” defined purely in terms of the etale fundamental group of Y. In this talk, I will preview some upcoming work with Jakob Stix in which we prove a partial finiteness result for this section set, thereby giving an unconditional verification of a prediction of the Section Conjecture for a general curve Y. We do this by adapting the recent p-adic proof of the Mordell Conjecture due to Brian Lawrence and Akshay Venkatesh.