This paper is devoted to the study of unbounded derivations on Banach quasi *-algebras with a particular emphasis to the case when they are infinitesimal generators of one-parameter automorphisms groups. Both of them, derivations and automorphisms are considered in a weak sense, i.e., with the use of a certain families of bounded sesquilinear forms. Conditions for a weak *-derivation to be the generator of a *-automorphisms group are given.
|Numero di pagine||19|
|Rivista||Annali di Matematica Pura ed Applicata|
|Stato di pubblicazione||Published - 2019|
All Science Journal Classification (ASJC) codes
- Applied Mathematics