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Cyclic cohomology of certain nuclear Fréchet algebras and DF algebras

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Lykova Z.

Open Mathematics

2008

tom 6

nr 3

405-421

We give explicit formulae for the continuous Hochschild and cyclic homology and cohomology of certain $$ \hat \otimes $$ -algebras. We use well-developed homological techniques together with some niceties of the theory of locally convex spaces to generalize the results known in the case of Banach algebras and their inverse limits to wider classes of topological algebras. To this end we show that, for a continuous morphism ϕ: x → y of complexes of complete nuclear DF-spaces, the isomorphism of cohomology groups H n(ϕ): H n(x) → H n (y) is automatically topological. The continuous cyclic-type homology and cohomology are described up to topological isomorphism for the following classes of biprojective $$ \hat \otimes $$ -algebras: the tensor algebra E $$ \hat \otimes $$ F generated by the duality (E,F,<·,·>) for nuclear Fréchet spaces E and F or for nuclear DF-spaces E and F; nuclear biprojective Köthe algebras λ(P) which are Fréchet spaces or DF-spaces; the algebra of distributions ε*(G) on a compact Lie group G.

Orbit algebras that are invariant under stable equivalences of Morita type

100%

Pogorzały Z.

Open Mathematics

2014

tom 12

nr 6

813-823

In this note we show that there are a lot of orbit algebras that are invariant under stable equivalences of Morita type between self-injective algebras. There are also indicated some links between Auslander-Reiten periodicity of bimodules and noetherianity of their orbit algebras.

Ograniczanie wyników

2 Open Mathematics

1 Lykova Z.

1 Pogorzały Z.

1 2014

1 2008

Wyniki wyszukiwania

Cyclic cohomology of certain nuclear Fréchet algebras and DF algebras

Orbit algebras that are invariant under stable equivalences of Morita type