The Banach algebras and
arXiv:2206.00986 · doi:10.1007/s00025-022-01788-0
Abstract
The spaces and were introduced as part of a program to find a general theory which covers both well-bounded operators and trigonometrically well-bounded operators acting on a Banach space. Since their initial appearance it has become clear that the definitions could be simplified somewhat. In this paper we give a self-contained exposition of the main properties of these spaces using this simplified approach.
33 pages. Some material previously appeared in an earlier version of arxiv:1312.1806