منابع مشابه
Gorenstein global dimensions for Hopf algebra actions
Let $H$ be a Hopf algebra and $A$ an $H$-bimodule algebra. In this paper, we investigate Gorenstein global dimensions for Hopf algebras and twisted smash product algebras $Astar H$. Results from the literature are generalized.
متن کاملgorenstein global dimensions for hopf algebra actions
let $h$ be a hopf algebra and $a$ an $h$-bimodule algebra. in this paper, we investigate gorenstein global dimensions for hopf algebras and twisted smash product algebras $astar h$. results from the literature are generalized.
متن کاملBicrossproduct approach to the Connes-Moscovici Hopf algebra
We give a rigorous proof that the (codimension one) Connes-Moscovici Hopf algebra HCM is isomorphic to a bicrossproduct Hopf algebra linked to a group factorisation of the diffeomorphism group Diff(R). We construct a second bicrossproduct UCM equipped with a nondegenerate dual pairing with HCM. We give a natural quotient Hopf algebra kλ[Heis] of HCM and Hopf subalgebra Uλ(heis) of UCM which aga...
متن کاملOn Spineless Cacti, Deligne’s Conjecture and Connes–kreimer’s Hopf Algebra
We give a new direct proof of Deligne’s conjecture on the Hochschild cohomology. For this we use the cellular chain operad of normalized spineless cacti as a model for the chains of the little discs operad. Previously, we had shown that the operad of spineless cacti is homotopy equivalent to the little discs operad. Moreover, we also showed that the quasi–operad of normalized spineless cacti is...
متن کاملStabilizer for Hopf Algebra Actions
The definition of stabilizer and orbit for Hopf algebra action is given, and a duality theorem on stabilizer is proved.
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ژورنال
عنوان ژورنال: Journal of Algebra
سال: 1994
ISSN: 0021-8693
DOI: 10.1006/jabr.1994.1124