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# Rahul Krishna : A New Approach to Waldspurgers Formula.

I will present a new trace formula approach to Waldspurger's formula for toric periods of automorphic forms on $PGL_2$. The method is motivated by interpreting Waldspurger's result as a period relation on $SO_2 \times SO_3$, which leads to a strange comparison of relative trace formulas. I will explain the local results needed to carry out this comparison, and discuss some small progress towards extending these results to high rank orthogonal groups.

**Category**: Number Theory**Duration**: 01:34:46**Date**: April 19, 2017 at 3:10 PM**Views**: 305-
**Tags:**seminar, Number Theory Seminar

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