### Topological spaces

Čech, Eduard, Frolík, Zdeněk, Katětov, Miroslav

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Čech, Eduard, Frolík, Zdeněk, Katětov, Miroslav

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Čech, Eduard, Katětov, Miroslav, Novák, Josef, Švec, Alois

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H.-H. Herda, R. C. Metzler (1966)

Colloquium Mathematicae

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Valmorin, Vincent (2000)

Novi Sad Journal of Mathematics

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Koutský, K., Sekanina, M.

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Edward Kocela (1973)

Fundamenta Mathematicae

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Roland Coghetto (2015)

Formalized Mathematics

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Using Mizar [9], and the formal topological space structure (FMT_Space_Str) [19], we introduce the three U-FMT conditions (U-FMT filter, U-FMT with point and U-FMT local) similar to those VI, VII, VIII and VIV of the proposition 2 in [10]: If to each element x of a set X there corresponds a set B(x) of subsets of X such that the properties VI, VII, VIII and VIV are satisfied, then there is a unique topological structure on X such that, for each x ∈ X, B(x) is the set of neighborhoods...

Panos Lambrinos (1980)

Manuscripta mathematica

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Maria Cristina Pedicchio, Fabio Rossi (1983)

Cahiers de Topologie et Géométrie Différentielle Catégoriques

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