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15
Math.TechQA.Club
2026-03-25 17:52:59
137
Views
Lemma 2.3., Chapter 3 - Do Carmo's Riemannian Geometry
Published on
25 Mar 2026 - 17:52
#manifolds
#proof-explanation
#geodesic
139
Views
Application of theorem 2.2. to Geodesic Flow - Chapter 3, Do Carmo Riemannian Geometry
Published on
01 Apr 2026 - 6:31
#manifolds
#proof-explanation
442
Views
Proof that every infinite set $X$ has an uncountable number of topologies on it.
Published on
27 Mar 2026 - 18:28
#general-topology
#proof-explanation
#cardinals
552
Views
Prove that a set cannot have two different size $$ and $, ≠n$.
Published on
10 Jul 2019 - 19:47
#elementary-set-theory
#proof-explanation
66
Views
If $A$ is a subset of $(V,\| \cdot \|)$, where $V$ is a vector space. Let $\overline{A}$ denote closure. Show $\overline{x + A} = x + \overline{A}$
Published on
10 Jul 2019 - 19:52
#real-analysis
#proof-verification
#proof-explanation
73
Views
equivalent metrics $\overline{d}(u,v)=\min\{d(u,v),1\}$
Published on
08 Apr 2026 - 23:05
#general-topology
#metric-spaces
#proof-explanation
731
Views
Let $f: [a,b] \rightarrow \mathbb{R}$ be increasing on the set $[a,b]$. Show $f$ is integrable on $[a,b]$
Published on
11 Jul 2019 - 0:19
#real-analysis
#integration
#proof-explanation
832
Views
Theorem $2$ (Variational principle for the principal eigenvalue)
Published on
25 Mar 2026 - 9:46
#partial-differential-equations
#proof-explanation
#elliptic-operators
57
Views
Some questions about the proof of the Honeycomb Conjecture
Published on
09 Apr 2026 - 1:18
#geometry
#differential-geometry
#proof-explanation
171
Views
Proof of theorem describing decay of convolution at infinity?
Published on
27 Mar 2026 - 14:51
#proof-explanation
#convolution
59
Views
disprove $n \log n \in O(n^2) \cap n \log n \in \Omega (n^2) $
Published on
02 Apr 2026 - 11:39
#discrete-mathematics
#proof-verification
#algorithms
#proof-explanation
46
Views
A proof of continuity of convex functions
Published on
11 Jul 2019 - 21:54
#real-analysis
#analysis
#proof-explanation
273
Views
Prove that if two norms on V have the same unit ball, then the norms are equal. Proof Explanation.
Published on
12 Jul 2019 - 0:08
#real-analysis
#proof-explanation
337
Views
In how many ways can $5$ men and $5$ women be arranged in a circle, if two particular women must not be next to a particular man?
Published on
08 Apr 2026 - 0:48
#combinatorics
#permutations
#proof-explanation
605
Views
Continuous dependence on initial conditions: why $\|y(t)-z(t)\|\leq\delta+L\int_{t_0}^{t}\|y(x)-z(x)\|dx$?
Published on
26 Mar 2026 - 8:00
#ordinary-differential-equations
#proof-explanation
#lipschitz-functions
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