Self-dual and quasi self-dual algebras

Details Self-dual and quasi self-dual algebras Self-dual and quasi self-dual algebras

2011-11-02

arxiv.org/abs/1111.0622v1

Mathematics

K-Theory and Homology

15 pages

Scientific paper

A self-dual algebras is one isomorphic as a module to the opposite of its dual; a quasi self-dual algebra is one whose cohomology with coefficients in itself is isomorphic to that with coefficients in the opposite of its dual. For these algebras, cohomology with coefficients in itself, which governs its deformation theory, is a contravariant functor of the algebra. Finite dimensional self-dual algebras over a field are identical with symmetric Frobenius algebras. (The monoidal category of commutative Frobenius algebras is known to be equivalent to that of 1+1 dimensional topological quantum field theories.) All finite poset algebras are quasi self-dual.

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