Hopfish algebras

Hopfish algebras
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Hopfish代数

DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
Chenchang Zhu
Chenchang Zhu
中科院分区:
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文献类型:
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作者:
Xiang Tang;A. Weinstein;Chenchang Zhu

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我们在结合代数上引入了“Hopfish代数”结构的概念,允许结构态射(余积、可数、对极)是双模而不是代数同态。证明了拟fi代数是Hop-Hopf-sh代数。我们发现finite集G上的函数代数上的一个fi-sh结构与G上的一个“超群组”结构密切相关。还讨论了Hopfish代数的Morita理论。
We introduce a notion of “hopfish algebra” structure on an associative algebra, allowing the structure morphisms (coproduct, counit, antipode) to be bimodules rather than algebra homomorphisms. We prove that quasi-Hopf algebras are hopfish algebras. We find that a hopfish structure on the algebra of functions on a finite set G is closely related to a “hypergroupoid” structure on G . The Morita theory of hopfish algebras is also discussed.