Mathematics
qualcuno
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26
Why are abelian groups of interest? What is their usefulness?
Mar 7
22
Integrating both sides of an equation: what does it really mean?
Aug 6 '18
14
Non-associative operations
Aug 23 '18
13
Let $A_{n\times n}$ be a real matrix. Is it true that $I+A^TA$ is invertible?
Oct 26 '18
12
Determinant of matrix with $A_{ij} = \min (i, j)$
Oct 2 '16
10
Non-trivial natural endomorphisms on $\operatorname{Top}$
Aug 10 '18
8
Can the torus and the Klein bottle be thought as $\mathbb{R}^2/G$ with $G$ a finite group acting freely
Oct 11 '18
7
$ab \equiv 1 \ (n)$ implies $a$ and $b$ coprime with $n$? [Proof Verification]
Mar 23 '18
7
When is the submodule of a product a product of submodules?
Jul 4 '18
7
If $A^k=O$ for some $k\ge 2$ does it necessarily imply that $I+A$ is invertible?
Nov 2 '18

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