By definition a totally convex algebra $A$ is a totally convex space $|A|$ equipped with an associative multiplication, i.e\. a morphism $\mu :|A|\otimes |A|\longrightarrow |A|$ of totally convex spaces. In this paper we introduce, for such algebras, the notions of ideal, tensor product, unitization, inverses, weak inverses, quasi-inverses, weak quasi-inverses and the spectrum of an element and investigate them in detail. This leads to a considerable generalization of the corresponding notions and results in the theory of Banach spaces.
@article{118490, author = {Dieter Pumpl\"un and Helmut R\"ohrl}, title = {Totally convex algebras}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {33}, year = {1992}, pages = {205-235}, zbl = {0763.46036}, mrnumber = {1189653}, language = {en}, url = {http://dml.mathdoc.fr/item/118490} }
Pumplün, Dieter; Röhrl, Helmut. Totally convex algebras. Commentationes Mathematicae Universitatis Carolinae, Tome 33 (1992) pp. 205-235. http://gdmltest.u-ga.fr/item/118490/
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