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A non-commutative Banach algebra whose maximal commutative subalgebras are all mutually isomorphic

Volume 146 / 2017

Wiesław Żelazko Colloquium Mathematicum 146 (2017), 47-51 MSC: Primary 46H05; Secondary 46H10; 47L10. DOI: 10.4064/cm6811-2-2016 Published online: 15 July 2016


The algebra as in the title is constructed as a quotient of the semigroup algebra of the discrete free semigroup with a countable set of generators.


  • Wiesław ŻelazkoInstitute of Mathematics
    Polish Academy of Sciences
    Śniadeckich 8
    00-656 Warszawa, Poland

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