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math.QA2004★ 15 cited
A proof of a cyclic version of Deligne's conjecture via Cacti
Ralph M. Kaufmann
In this note, we show that the normalized Hochschild co--chains of an associative algebra with a non--degenerate, symmetric, invariant inner product are an algebra over a chain mod…
math.QA2003★ 4 cited
On Spineless Cacti, Deligne's Conjecture and Connes--Kreimer's Hopf Algebra
Ralph M. Kaufmann
Using a cell model for the little discs operad in terms of spineless cacti we give a minimal common topological operadic formalism for three a priori disparate algebraic structures…