most citedAlgebraic invariants for right-angled Artin groups

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math.QA20051 cited

Some bialgebroids constructed by Kadison and Connes-Moscovici are isomorphic

Florin Panaite, Freddy Van Oystaeyen

We prove that a certain bialgebroid introduced recently by Kadison is isomorphic to a bialgebroid introduced earlier by Connes and Moscovici. At the level of total algebras, the is…

math.QA2005

A structure theorem for quasi-Hopf comodule algebras

Florin Panaite, Freddy Van Oystaeyen

If H is a quasi-Hopf algebra and B is a right H-comodule algebra such that there exists v:H\to B a morphism of right H-comodule algebras, we prove that there exists a left H-module…

math.QA2005

L-R-smash product for (quasi) Hopf algebras

Florin Panaite, Freddy Van Oystaeyen

We introduce a more general version of the so-called L-R-smash product and study its relations with other kinds of crossed products (two-sided smash and crossed product and diagona…

math.QA2005

Generalized (anti) Yetter-Drinfeld modules as components of a braided T-category

Florin Panaite, Mihai D. Staic

If H is a Hopf algebra with bijective antipode and α, β\in Aut_{Hopf}(H), we introduce a category_H{\cal YD}^H(α, β), generalizing both Yetter-Drinfeld and anti-Yetter-Drinfeld mod…

math.QA20043 cited

Extending lazy 2-cocycles on Hopf algebras and lifting projective representations afforded by them

Juan Cuadra, Florin Panaite

We study some problems related to lazy 2-cocycles, such as: extension of (lazy) 2-cocycles to a Drinfeld double and to a Radford biproduct, Yetter-Drinfeld data obtained from lazy…

math.QA2004

On the structure of quantum permutation groups

Teodor Banica, Sergiu Moroianu

The quantum permutation group of the set corresponds to the Hopf algebra . This is an algebra constructed with generators and relations, known to b…