List questions from compactness

Published on 01 Apr 2014 - 15:43

30

Views

Is (X, U) compact? (X, T)?

Published on 01 Apr 2014 - 22:34

174

Views

Constructing a Set with Connected Interior

Published on 30 Mar 2026 - 14:36

400

Views

About the Stone-Čech universal property

Published on 25 Mar 2026 - 16:06

255

Views

Limit point compactness

Published on 03 Apr 2014 - 1:36

559

Views

A closed bounded set having exactly one accumulation point has the covering property

Published on 09 Apr 2014 - 2:42

430

Views

Compactness in Complete Lattices

Published on 25 Mar 2026 - 20:15

4.8k

Views

A proof about $F_\sigma$, $\sigma$-compact sets, and subsets of the irrationals

Published on 10 Apr 2014 - 20:32

508

Views

Why is proof of the [topological] closed graph theorem incorrect?

Published on 25 Mar 2026 - 12:48

2k

Views

Compact topological space not having Countable Basis?

Published on 25 Mar 2026 - 6:17

1.6k

Views

Lindelöf if and only if every collection with the countable intersection property has non-empty intersection of closures

Published on 28 Mar 2026 - 2:42

78

Views

Surjective function on a compact metric space

Published on 11 Apr 2014 - 14:53

920

Views

Can we prove that a bounded closed subset of $\mathbb R^n$ is compact without Axiom of Choice?

Published on 30 Mar 2026 - 11:46

1.1k

Views

Weak sequential compactness in a reflexive space

Published on 12 Apr 2014 - 23:28

488

Views

Developing an intuition for compact and open sets

Published on 13 Apr 2014 - 2:02

List Question

compactness in topology of pointwise convergence

Is (X, U) compact? (X, T)?

Constructing a Set with Connected Interior

About the Stone-Čech universal property

Limit point compactness

A closed bounded set having exactly one accumulation point has the covering property

Compactness in Complete Lattices

A proof about $F_\sigma$, $\sigma$-compact sets, and subsets of the irrationals

Why is proof of the [topological] closed graph theorem incorrect?

Compact topological space not having Countable Basis?

Lindelöf if and only if every collection with the countable intersection property has non-empty intersection of closures

Surjective function on a compact metric space

Can we prove that a bounded closed subset of $\mathbb R^n$ is compact without Axiom of Choice?

Weak sequential compactness in a reflexive space

Developing an intuition for compact and open sets

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