Mathematics
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verret
  • Member for 9 years, 1 month
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  • Auckland, New Zealand
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Researcher in Graph and Group Theory

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All Questions Answers
Score Newest
answer
13
Is there a neat way to see that $C_3$ is not a quotient of $S_n$?
Jan 25, 2018
answer
11
On automorphisms of groups which extend as automorphisms to every larger group
Jan 3, 2019
answer
11
Groups of derangements: what is known about subgroups of a symmetric group $S_{n}$ that contain only derangements (plus the identity)?
Feb 26, 2019
answer
10
Permuting products of subgroups
Nov 3, 2014
answer
9
Groups with "unique" elements of high order
Oct 21, 2020
answer
9
Let $G$ be a group of order $16$ with an element $g$ of order $4$. Prove that the subgroup of $G$ generated by $g^2$ is normal in $G$.
Jul 13, 2021
answer
8
Which pairs of groups are quotients of some group by isomorphic subgroups?
Nov 4, 2021
answer
7
Index of subgroups in a finite solvable group, with trivial Frattini subgroup (Exercise 3B.12 from Finite Group Theory, by M. Isaacs)
Jun 1, 2020
answer
7
Group which can be written as a union of proper normal subgroups
Oct 25, 2019
answer
6
For a subgroup $H$ of a finite group $G$ , when does $\lvert \operatorname{Aut}(H)\rvert$ divide $\lvert \operatorname{Aut}(G)\rvert$?
Apr 2, 2015
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26
Pair of short exact sequences of groups
19
Is there anything significant about GAP's SmallGroup(512,2045)?
17
Are there infinitely many insipid numbers?
12
$2$-group with two isomorphic normal subgroups of index $4$ with non-isomorphic quotients
10
Highly symmetric 6-regular graph with 20 vertices

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