Skip to main content
Mathematics
qualcuno's user avatar
qualcuno's user avatar
qualcuno's user avatar
qualcuno
  • Member for 8 years
  • Last seen this week
Profile Activity
Stats
17,223
reputation
280k
reached
526
answers
116
questions
Communities
View all
Badges
View all badges
3
gold badges
15
silver badges
50
bronze badges
Top tags
View all tags
250
Score
127
Posts
20
Posts %
136
Score
94
Posts
15
Posts %
134
Score
80
Posts
12
Posts %
131
Score
72
Posts
11
Posts %
110
Score
44
Posts
7
Posts %
90
Score
48
Posts
7
Posts %
Top posts
View all questions and answers
answer
28
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
9
Can the torus and the Klein bottle be thought as $\mathbb{R}^2/G$ with $G$ a finite group acting freely
Oct 11, 2018
question
8
When is the submodule of a product a product of submodules?
Jul 4, 2018
question
7
About a specific step in a proof of the fact that filtered colimits and finite limits commute in $\mathbf{Set}$
Jan 16, 2019
answer
7
Discontinuous function with bounded variation
May 18, 2018