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# Wydawnictwa / Czasopisma IMPAN / Studia Mathematica / Wszystkie zeszyty

## The tensor algebra of power series spaces

### Tom 193 / 2009

Studia Mathematica 193 (2009), 189-202 MSC: Primary 46H20; Secondary 46A45, 46A63. DOI: 10.4064/sm193-2-5

#### Streszczenie

The linear isomorphism type of the tensor algebra $T(E)$ of Fréchet spaces and, in particular, of power series spaces is studied. While for nuclear power series spaces of infinite type it is always $s$, the situation for finite type power series spaces is more complicated. The linear isomorphism $T(s)\cong s$ can be used to define a multiplication on $s$ which makes it a Fréchet m-algebra $s_\bullet$. This may be used to give an algebra analogue to the structure theory of $s$, that is, characterize Fréchet m-algebras with ($\Omega$) as quotient algebras of $s_\bullet$ and Fréchet m-algebras with (DN) and ($\Omega$) as quotient algebras of $s_\bullet$ with respect to a complemented ideal.

#### Autorzy

• Dietmar VogtFB Mathematik und Naturwissenschaften
Bergische Universität Wuppertal
Gauß. 20
D-42097 Wuppertal, Germany
e-mail

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