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arXiv 1901.00341math.RA
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BiHom-结合代数的上同调

Cohomology of BiHom-associative algebras

Apurba Das

摘要:

Bihom-结合代数是近年来在群hom-category的研究中引入的一个概念。本文对具有适当系数的双角-结合代数引入了一个Hochschild型上同调。基础的上链复形(本身具有系数)可以被赋予具有乘法的操作数的结构。因此,上同调继承了一个Gerstenhaber结构。我们表明,这种上同调也控制相应的形式变形。最后,我们引入了直到同伦的bihom-结合代数,并证明了这些同伦代数的某些特殊类与上述Hochschild上同调有关。

英文摘要:

Bihom-associative algebras have been recently introduced in the study of group hom-categories. In this paper, we introduce a Hochschild type cohomology for bihom-associative algebras with suitable coefficients. The underlying cochain complex (with coefficients in itself) can be given the structure of an operad with a multiplication. Hence, the cohomology inherits a Gerstenhaber structure. We show that this cohomology also control corresponding formal deformations. Finally, we introduce bihom-associative algebras up to homotopy and show that some particular classes of these homotopy algebras are related to the above Hochschild cohomology.

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