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 PiszczekFaculty of Mathematics and Computer Science, Poland


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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