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Rena Chu, Duke University

June 4th, 2021 5:30-6:20 pm CEST

Title : Constant root number on integer fibres of elliptic surfaces

Abstract : In this joint work with Julie Desjardins, we aim to describe all non-isotrivial families of elliptic curves with low-degree coefficients such that the root number is constant for every integer fibre in the family. We motivate this talk by studying properties of the root number in families of elliptic curves and Washington’s example 𝒲t : y2=x3+tx2-(t+3)x+1 for which Rizzo showed has constant root number -1 for all t∈ℤ.