TUMOR 发表于 2025-3-21 19:08:55

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FOLLY 发表于 2025-3-21 21:22:05

Overview: 978-0-7923-2974-9978-1-4899-3795-7

Abduct 发表于 2025-3-22 03:31:33

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Lucubrate 发表于 2025-3-22 06:43:06

https://doi.org/10.1007/978-1-4899-3795-7Coproduct; inequality; mathematics

Monotonous 发表于 2025-3-22 12:36:41

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兽群 发表于 2025-3-22 16:24:38

Jeremy T. Kerr,Manisha Kulkarni,Adam Algar is that any open covering of the space contains a finite subfamily the closures of the elements of which cover the space. A regular .-closed space is compact. If every closed subspace of a space is .-closed, then the space itself is compact. A theory has been developed for .-closed extensions of Hausdorff spaces.

兽群 发表于 2025-3-22 20:44:03

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指派 发表于 2025-3-22 21:14:44

H, is that any open covering of the space contains a finite subfamily the closures of the elements of which cover the space. A regular .-closed space is compact. If every closed subspace of a space is .-closed, then the space itself is compact. A theory has been developed for .-closed extensions of Hausdorff spaces.

Exaggerate 发表于 2025-3-23 02:06:30

Goran Andonovski,Sašo Blažič,Igor Škrjanc . - A set-theoretic operation, the result of its application to a sequence (. .) of sets can be noted thus:. where . is a system of sets of positive integers, called the . δ-σ. See ..

潜伏期 发表于 2025-3-23 07:02:28

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查看完整版本: Titlebook: Encyclopaedia of Mathematics; Coproduct — Hausdorf M. Hazewinkel Book 1995 Springer Science+Business Media Dordrecht 1995 Coproduct.inequal