MathCS Seminar

Title: The rank of the Eisenstein ideal
Seminar: Algebra
Speaker: Preston Wake of UCLA
Contact: John Duncan,
Date: 2017-10-03 at 4:00PM
Venue: W306
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In his landmark 1976 paper "Modular curves and the Eisenstein ideal", Mazur studied congruences modulo p between cusp forms and an Eisenstein series of weight 2 and prime level N. We use deformation theory of pseudorepresentations to study the corresponding Hecke algebra. We will discuss how this method can be used to refine Mazur's results, quantifying the number of Eisenstein congruences. Time permitting, we'll also discuss some partial results in the composite-level case. This is joint work with Carl Wang-Erickson.

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