Contractible Köthe co-echelon algebras

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Contractible Köthe co-echelon algebras

Published in: Quaestiones Mathematicae
Volume 43 , issue 4 , 2020 , pages: 493–505
DOI: 10.2989/16073606.2019.1579765
Author(s): Krzysztof Piszczek Faculty of Mathematics and Computer Science, Poland
Keywords: Primary: 46H05 , 47B47 , Secondary: 46A04 , 46A13 , 46J05 , Primary: 46H05 , 47B47 , Secondary: 46A04 , 46A13 , 46J05
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Abstract

In this note we investigate contractibility properties in the class of the so-called DF-algebras. We also give a complete characterization of contractible Köthe co-echelon algebras.
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