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 SM ISO690:2012CALMUŢCHI, Laurenţiu. Hausdorff extensions. In: Conference on Applied and Industrial Mathematics: CAIM 2018, 20-22 septembrie 2018, Iași, România. Chișinău, Republica Moldova: Casa Editorial-Poligrafică „Bons Offices”, 2018, Ediţia a 26-a, p. 85. ISBN 978-9975-76-247-2. |
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| Conference on Applied and Industrial Mathematics Ediţia a 26-a, 2018 |
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Conferința "Conference on Applied and Industrial Mathematics" Iași, România, Romania, 20-22 septembrie 2018 | ||||||
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Any space is considered to be a Hausdor space. We use the terminology and notations from [3, 1, 2]. Let be an in nite cardinal. A point x 2 X is called a P( )-point of the space X if for any non-empty family of open subsets of X for which x 2 \ and j j < there exists an open subset U of X such that x 2 U \ . If any point of X is a P( )-point, then we say that P( )-space. |
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