A+ CATEGORY SCIENTIFIC UNIT

Diametral dimensions of Fréchet spaces

Volume 234 / 2016

Loïc Demeulenaere, Leonhard Frerick, Jochen Wengenroth Studia Mathematica 234 (2016), 271-280 MSC: 46A04, 46A11, 46A63. DOI: 10.4064/sm8597-6-2016 Published online: 29 August 2016

Abstract

The diametral dimension is an important topological invariant in the category of Fréchet spaces which has been used, e.g., to distinguish types of Stein manifolds. We introduce variants of the classical definition in order to solve an old conjecture of Bessaga, Mityagin, Pełczyński, and Rolewicz at least for nuclear Fréchet spaces. Moreover, we clarify the relation between an invariant recently introduced by Terzioğlu and the by now classical condition $(\overline \Omega )$ of Vogt and Wagner.

Authors

  • Loïc DemeulenaereDépartement de Mathématiques, B37
    Université de Liège
    4000 Liège, Belgium
    e-mail
  • Leonhard FrerickFB IV – Mathematik
    Universität Trier
    54286 Trier, Germany
    e-mail
  • Jochen WengenrothFB IV – Mathematik
    Universität Trier
    54286 Trier, Germany
    e-mail

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