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15
Math.TechQA.Club
2026-03-30 11:46:44
1.1k
Views
Proof that a product of two quasi-compact spaces is quasi-compact without Axiom of Choice
Published on
30 Mar 2026 - 11:46
#general-topology
#compactness
#axiom-of-choice
271
Views
Stone-Čech compactification using ultrafilters
Published on
13 Apr 2014 - 11:42
#general-topology
#compactness
#filters
102
Views
Finite-case symmetry leads to infinite-case asymmetry
Published on
24 Mar 2026 - 23:29
#trigonometry
#set-theory
#compactness
#big-picture
100
Views
Is the category of these particularly nice spaces cartesian closed?
Published on
30 Mar 2026 - 14:41
#general-topology
#category-theory
#compactness
#connectedness
230
Views
$\beta \omega$ is zero dimensional and extremally disconnected
Published on
14 Apr 2014 - 15:45
#general-topology
#compactness
124
Views
Define a compact and convex set through inequality constraints
Published on
15 Apr 2014 - 10:33
#real-analysis
#general-topology
#inequality
#convex-analysis
#compactness
29
Views
Redefine a discrete compact set
Published on
15 Apr 2014 - 15:23
#real-analysis
#general-topology
#inequality
#convex-analysis
#compactness
3.6k
Views
Let $p: E\to B$ be a covering map. If $B$ is compact and $p^{-1}(b)$ is finite, then $E$ is compact.
Published on
26 Mar 2026 - 17:32
#general-topology
#algebraic-topology
#compactness
#covering-spaces
877
Views
Compact and convex discrete set
Published on
15 Apr 2014 - 18:37
#convex-analysis
#compactness
354
Views
Is sequence convergent in subspace of compact metric space?
Published on
16 Apr 2014 - 10:32
#general-topology
#compactness
6.8k
Views
Properties of compact set: non-empty intersection of any system of closed subsets with finite intersection property
Published on
17 Apr 2014 - 10:26
#general-topology
#compactness
184
Views
$\ f \colon X \to X $ ,continuous function where X is compact,Hausdorff space.Show $\exists A$ st $f(A) =A$.
Published on
25 Mar 2026 - 9:32
#general-topology
#proof-verification
#compactness
#nets
886
Views
Compact sets of real number
Published on
17 Apr 2014 - 16:07
#real-analysis
#compactness
1.1k
Views
SVD: proof of existence
Published on
26 Mar 2026 - 9:38
#compactness
#svd
49
Views
More about compact.
Published on
18 Apr 2014 - 18:29
#compactness
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