**Date & Time:** Thursday, January 30, 2014, 16:00-17:00.

**Venue:** Ramanujan Hall

**Title:** Ext Analogues of Branching Laws

**Speaker:** Dipendra Prasad, TIFR Mumbai

**Abstract:** The decomposition of a representation of a group when restricted to a subgroup is an important problem well-studied for finite and compact Lie groups, and continues to be of much contemporary interest in the context of real and *p*-adic groups. We will survey some of the questions that have recently been considered, and look at a variation of these questions involving concepts in homological algebra which gives rise to interesting newer questions.