Some properties of -open sets.

Caldas, M.; Jafari, S.; Kovár, M.M.

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$ϕ (F_{11}) = 88$ .

Luca, Florian, Mignotte, Maurice (2006)

Divulgaciones Matemáticas

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On upper and lower weakly $α$ -continuous multifunctions.

Popa, Valeriu, Noiri, Takashi (2002)

Novi Sad Journal of Mathematics

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On homomorphisms, open operators and their adjoints.

Zarnadze, D. (2001)

Georgian Mathematical Journal

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Noncommutative Valdivia compacta

Marek Cúth (2014)

Commentationes Mathematicae Universitatis Carolinae

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We prove some generalizations of results concerning Valdivia compact spaces (equivalently spaces with a commutative retractional skeleton) to the spaces with a retractional skeleton (not necessarily commutative). Namely, we show that the dual unit ball of a Banach space is Corson provided the dual unit ball of every equivalent norm has a retractional skeleton. Another result to be mentioned is the following. Having a compact space $K$ , we show that $K$ is Corson if and only if every continuous...