no. 2
Some examples on quasi-barrelled spaces
Annales de l'Institut Fourier, Tome 22 (1972) no. 2, pp. 21-26.

On y présente trois exemples : un espace bornologique qui contient un sous-espace de codimension infinie dénombrable non infratonnelé, un 𝒟ℱ-espace infratonnelé qui contient un sous-espace de codimension infinie dénombrable qui n’est pas un 𝒟ℱ-espace et un espace tonnelé bornologique qui n’est pas limite inductive d’espaces de Baire.

The three following examples are given: a bornological space containing a subspace of infinite countable codimension which is not quasi-barrelled, a quasi-barrelled 𝒟ℱ-space containing a subspace of infinite countable codimension which is not 𝒟ℱ -space, and bornological barrelled space which is not inductive limit of Baire space.

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Valdivia, Manuel. Some examples on quasi-barrelled spaces. Annales de l'Institut Fourier, Tome 22 (1972) no. 2, pp. 21-26. doi : 10.5802/aif.409. https://aif.centre-mersenne.org/articles/10.5802/aif.409/

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