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15
Math.TechQA.Club
2026-03-25 08:10:56
231
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About a specific step in a proof of the fact that filtered colimits and finite limits commute in $\mathbf{Set}$
Published on
25 Mar 2026 - 8:10
#category-theory
#proof-explanation
#limits-colimits
199
Views
Proof theorem 3.17 Rudin's functional analysis
Published on
25 Mar 2026 - 9:34
#functional-analysis
#proof-explanation
#weak-topology
189
Views
Rudin's functional analysis 3.18, every originally bounded subset of a locally convex space is weakly bounded.
Published on
25 Mar 2026 - 11:04
#functional-analysis
#proof-explanation
#topological-vector-spaces
#locally-convex-spaces
1.1k
Views
Confusion on Additive Property of Supremum and Infimum - Theorem I.33 Apostol Calculus I
Published on
27 Mar 2026 - 9:48
#calculus
#proof-verification
#proof-explanation
#supremum-and-infimum
94
Views
Proof in linear algebra/calculus
Published on
16 Jan 2019 - 17:06
#linear-algebra
#multivariable-calculus
#proof-explanation
55
Views
Recurrence relation - second order
Published on
30 Mar 2026 - 10:17
#recurrence-relations
#proof-explanation
565
Views
Convergence of CG method, number of eigenvalues
Published on
28 Mar 2026 - 6:22
#numerical-methods
#proof-explanation
#numerical-linear-algebra
56
Views
How to read $f(K)=\bigcup_{k\in K}\langle f,k\rangle$ and what it means, mathematically
Published on
29 Mar 2026 - 18:36
#functional-analysis
#proof-explanation
#definition
67
Views
Show that $\leq$ on $\mathbb{R}$ satisfies the following three properties.
Published on
17 Jan 2019 - 7:55
#real-analysis
#proof-explanation
53
Views
Rudin's functional analysis appendix A4 (a)
Published on
25 Mar 2026 - 22:24
#functional-analysis
#proof-explanation
#compactness
#complete-spaces
57
Views
Clarification required for the proof of Riemann Lebesgue Lemma
Published on
27 Mar 2026 - 6:07
#proof-explanation
#riemann-integration
252
Views
Proving $\sqrt{2013^{2016}+2014^{2016}}$ is irrational
Published on
28 Mar 2026 - 11:53
#proof-explanation
#irrational-numbers
63
Views
Why can the test error be written in terms of the training error in this way?
Published on
26 Mar 2026 - 23:11
#proof-explanation
#machine-learning
50
Views
On cardinality: $|[0,1]|\ge|\{0,1\}^{\mathbb{N}}|$ and $|\{0,1\}^{\mathbb{N}}|\ge |(0,1)|$
Published on
17 Jan 2019 - 20:37
#proof-verification
#elementary-set-theory
#proof-explanation
161
Views
How to you prove $|a|=|-a|$ is true
Published on
26 Mar 2026 - 6:25
#proof-verification
#proof-writing
#proof-explanation
#absolute-value
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