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日時: 2013年11月8日(金) 16:30〜17:30
会場: 数理科学研究科棟(駒場) 123号室
Dipendra Prasad 氏 (Tata Institute of Fundamental Research)
Ext Analogues of Branching laws
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.