Mathematics
user avatar
user avatar
user avatar
qualcuno
  • Member for 5 years, 9 months
  • Last seen this week
Profile Activity
Stats
16,310
reputation
176k
reached
526
answers
111
questions
Communities
View all
Badges
View all badges
2
gold badges
12
silver badges
45
bronze badges
Top tags
View all tags
236
Score
126
Posts
20
Posts %
133
Score
94
Posts
15
Posts %
127
Score
80
Posts
13
Posts %
122
Score
72
Posts
11
Posts %
107
Score
44
Posts
7
Posts %
83
Score
48
Posts
8
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
27
Why are abelian groups of interest? What is their usefulness?
Mar 7, 2021
answer
22
Integrating both sides of an equation: what does it really mean?
Aug 6, 2018
answer
14
Non-associative operations
Aug 23, 2018
answer
13
Let $A_{n\times n}$ be a real matrix. Is it true that $I+A^TA$ is invertible?
Oct 26, 2018
answer
12
Determinant of matrix with $A_{ij} = \min (i, j)$
Oct 2, 2016
question
10
Non-trivial natural endomorphisms on $\operatorname{Top}$
Aug 10, 2018
question
8
Can the torus and the Klein bottle be thought as $\mathbb{R}^2/G$ with $G$ a finite group acting freely
Oct 11, 2018
answer
7
What subsets of $\Bbb R$ are closed under countable sums?
Jul 12, 2021
answer
7
If $A^k=O$ for some $k\ge 2$ does it necessarily imply that $I+A$ is invertible?
Nov 2, 2018
question
7
$ab \equiv 1 \ (n)$ implies $a$ and $b$ coprime with $n$? [Proof Verification]
Mar 23, 2018

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.