Question

compact inverse is compact in canonical homomorphism

score 96 · Answer 1 · 2026-04-09 07:21:35

96

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compact inverse is compact in canonical homomorphism

Published on 09 Apr 2026 - 7:21

score 2.5k · Answer 2 · 2026-04-10 07:08:09

2.5k

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Existence of a continuous function which does not achieve a maximum.

Published on 10 Apr 2026 - 7:08

score 1.2k · Answer 3 · 2026-04-10 11:36:13

1.2k

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Does $\sigma$ -compact imply separable?

Published on 10 Apr 2026 - 11:36

score 396 · Answer 4 · 2026-04-04 05:19:39

396

Views

Show For any language L two L-structures M and N are elementarily equivalent iff they are elementarily equivalent for every finite sublanguage.

Published on 04 Apr 2026 - 5:19

score 270 · Answer 5 · 2026-04-09 06:31:06

270

Views

Limit of bounded functions in compact-open topology

Published on 09 Apr 2026 - 6:31

score 850 · Answer 6 · 2015-04-23 21:22:12

850

Views

Compactness and Hausdorffness with different topology

Published on 23 Apr 2015 - 21:22

score 87 · Answer 7 · 2015-04-24 13:11:23

87

Views

Is there a lower bound for the maximal number of separated sets?

Published on 24 Apr 2015 - 13:11

score 238 · Answer 8 · 2015-04-25 04:00:00

238

Views

A sequentially compact subset of $\Bbb R^n$ is closed and bounded

Published on 25 Apr 2015 - 4:00

score 212 · Answer 9 · 2015-04-25 15:38:04

212

Views

How to show that there exists a sequence in $[0,1]$ such that the set of accumulation points of the sequence is $[0,1]$

Published on 25 Apr 2015 - 15:38

score 2.8k · Answer 10 · 2026-04-12 16:11:28

2.8k

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Let $A,B$ be compact subsets of $X$. Prove that $A \cap B$ is compact.

Published on 12 Apr 2026 - 16:11

score 2.7k · Answer 11 · 2026-04-11 23:15:08

2.7k

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Quotient Maps and Compact Hausdroff Spaces

Published on 11 Apr 2026 - 23:15

score 628 · Answer 12 · 2015-04-26 07:30:09

628

Views

generalize the question every every intersection of nested sequence of compact non-empty sets is compact and non-empty

Published on 26 Apr 2015 - 7:30

score 1.8k · Answer 13 · 2026-04-12 19:08:01

1.8k

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Palais–Smale compactness condition

Published on 12 Apr 2026 - 19:08

score 533 · Answer 14 · 2026-03-26 21:25:58

533

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Convex open neighborhood of compact convex subset

Published on 26 Mar 2026 - 21:25

score 123 · Answer 15 · 2015-04-27 13:47:55

123

Views

How to show there exists $E$ such that $E \cap K_n$ is dense for every $n$?

Published on 27 Apr 2015 - 13:47

List Question

compact inverse is compact in canonical homomorphism

Existence of a continuous function which does not achieve a maximum.

Does $\sigma$ -compact imply separable?

Show For any language L two L-structures M and N are elementarily equivalent iff they are elementarily equivalent for every finite sublanguage.

Limit of bounded functions in compact-open topology

Compactness and Hausdorffness with different topology

Is there a lower bound for the maximal number of separated sets?

A sequentially compact subset of $\Bbb R^n$ is closed and bounded

How to show that there exists a sequence in $[0,1]$ such that the set of accumulation points of the sequence is $[0,1]$

Let $A,B$ be compact subsets of $X$. Prove that $A \cap B$ is compact.

Quotient Maps and Compact Hausdroff Spaces

generalize the question every every intersection of nested sequence of compact non-empty sets is compact and non-empty

Palais–Smale compactness condition

Convex open neighborhood of compact convex subset

How to show there exists $E$ such that $E \cap K_n$ is dense for every $n$?

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