Mathematics
Joseph Cooper's user avatar
Joseph Cooper's user avatar
Joseph Cooper's user avatar
Joseph Cooper
  • Member for 13 years, 1 month
  • Last seen this week
Profile Activity
Stats
312
reputation
7k
reached
3
answers
0
questions
Communities
View all
Badges
This user doesn’t have any gold badges yet.
1
silver badge
6
bronze badges
Top tags
View all tags
20
Score
2
Posts
67
Posts %
19
Score
1
Posts
33
Posts %
19
Score
1
Posts
33
Posts %
19
Score
1
Posts
33
Posts %
1
Score
1
Posts
33
Posts %
1
Score
1
Posts
33
Posts %
Top posts
All Questions Answers
Score Newest
answer
19
Does $G\cong G/H$ imply that $H$ is trivial?
Nov 7, 2011
answer
1
$H$ is a normal subgroup of $G$ which $[G:H]=n$. Show that for all $g \in G$ which $(o(g), n)= 1$ and $o(g)<\infty$ we can conclude $g \in H$.
Oct 20, 2020
answer
1
Examples where geometry/topology helps algebra
Jun 29, 2022
Top network posts
View all network posts
17
Draft mode in Tikz externalize hides graphics, but not without externalize
13
Clipping a path using a node
7
Introductory text on geometric group theory?

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.