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15
Math.TechQA.Club
2026-05-11 22:36:55
66
Views
Minimal displacement for isometries composition
Published on
11 May 2026 - 22:36
#metric-spaces
#isometry
1.1k
Views
Is $\mathbb{R}\setminus\mathbb{Q}$ separable?
Published on
11 May 2026 - 7:50
#real-analysis
#general-topology
#metric-spaces
#separable-spaces
840
Views
Total boundedness and compactness in $\ell^\infty$
Published on
10 May 2026 - 15:57
#metric-spaces
#compactness
#normed-spaces
228
Views
Example of length structure with Euclidian intrinsic metric but different path lengths
Published on
13 May 2026 - 10:38
#metric-spaces
#riemannian-geometry
#metric-geometry
276
Views
Proving triangle inequality holds for a specific metric.
Published on
12 Apr 2026 - 0:48
#real-analysis
#inequality
#metric-spaces
56
Views
Thinking about structure and structure-preserving maps more formally
Published on
29 Apr 2026 - 12:52
#metric-spaces
#inner-products
139
Views
Are sets of point convergence of Borel functions Borel?
Published on
10 May 2026 - 19:03
#real-analysis
#general-topology
#convergence-divergence
#metric-spaces
#borel-sets
336
Views
For a NVS $X$ and a closed proper subspace $Y\subset X$, show that $\forall\,\epsilon\gt0,\,\exists \,x\in X:\|x\|=1,d(x,Y)\ge1-\epsilon.$
Published on
10 May 2026 - 18:30
#functional-analysis
#vector-spaces
#metric-spaces
#normed-spaces
149
Views
Lipschitz extension of affine function to whole space
Published on
11 May 2026 - 5:00
#metric-spaces
#geometric-measure-theory
#optimal-transport
41
Views
Triangulation/Trilateration without Labeling
Published on
11 Apr 2026 - 7:50
#geometry
#metric-spaces
875
Views
Density of Lipschitz functions in the set of uniformly continuous functions
Published on
11 May 2026 - 5:00
#real-analysis
#metric-spaces
#uniform-continuity
#lipschitz-functions
606
Views
Infinite metric space has a infinite open set whose complement is also infinite
Published on
15 Apr 2026 - 7:37
#real-analysis
#general-topology
#metric-spaces
111
Views
Proof that if a point $P$ is not in the interior of $S^c$, then any ball in $E$ of center $P$ contains points of $S$
Published on
17 Apr 2026 - 9:00
#general-topology
#proof-verification
#metric-spaces
627
Views
Distance metric limits to 0 if and only if convergence in measure
Published on
11 May 2026 - 12:48
#measure-theory
#metric-spaces
#lebesgue-integral
#measurable-functions
35
Views
Question regarding homeomorphisms
Published on
14 Apr 2026 - 17:46
#general-topology
#metric-spaces
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