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Some IHX type relations on trivalent graphs and symplectic representation theory

Stavros Garoufalidis, Hiroaki Nakamura

q-algarXiv:q-alg/9705002

Abstract

We consider several algebras that arise in the study of the mapping class group (by means of topology and Hodge theory) and describe their symplectic-invariant parts in terms of algebras on trivalent graphs.

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