Mathematics
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Ruy
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All Questions Answers
Score Newest
answer
43
Basis-free, field-independent definition of determinants?
Jun 19, 2022
answer
16
Intuition behind Pontryagin duality
Feb 15, 2021
answer
12
Do unique $n^{th}$ roots commute in groups?
Jun 19, 2022
answer
10
Basic Confusion on Push-Forward of a Measure
Sep 21, 2020
question
9
Does left-multiplication by compact operators turn strong-convergence into norm-convergence?
Dec 4, 2020
answer
9
How can I reconcile cardinality and and subsets in Set Theory?
May 24, 2022
answer
8
Does left-multiplication by compact operators turn strong-convergence into norm-convergence?
Dec 5, 2020
answer
8
Convergence of $\sum_{n}\frac{q_n}{n}$, where $(q_n)$ enumerates $\mathbb{Q}\cap[0,1]$?
Sep 25, 2020
answer
7
An example which disproves $\|p(T)\|_{op} = \|p\|_\sup$ in arbitrary Banach spaces (Gelfand theory).
Jul 30, 2022
question
7
Crossing the boundary of a subset of $ℝ^2$.
Jul 6, 2022
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63
Short exact sequences every mathematician should know
24
Emacs Org-mode - Export to another directory?
12
Non-commutative duality I: Which C*-algebras are (isomorphic to a) convolution algebra?
10
What is the convex hull of the quaternionic symmetries of the 3 dimensional cube?
9
Do extensions of pure states separate points?

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