Mathematics
Derek Holt's user avatar
Derek Holt's user avatar
Derek Holt's user avatar
Derek Holt
  • Member for 12 years, 7 months
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All Questions Answers
Score Newest
answer
37
When does every group with order divisible by $n$ have a subgroup of order $n$?
Feb 28, 2012
answer
30
Derived subgroup where not every element is a commutator
Oct 26, 2010
answer
29
Normal subgroups of infinite symmetric group
Jul 4, 2012
answer
28
Applications of the wreath product?
Mar 18, 2011
answer
26
What is the least $n$ such that it is possible to embed $\operatorname{GL}_2(\mathbb{F}_5)$ into $S_n$?
Sep 11, 2014
answer
25
Groups with "few" subgroups
Apr 23, 2015
answer
25
Looking for a simple proof that groups of order $2p$ are up to isomorphism $\Bbb{Z}_{2p}$ and $D_p$ for prime $p>2$.
Jan 31, 2013
answer
24
100 blue-eyed islanders puzzle: 3 questions
Sep 10, 2013
answer
22
Wielandt's proof of Sylow's theorem.
Aug 30, 2013
answer
22
A finite Monoid $M$ is a group if and only if it has only one idempotent element
Nov 15, 2013
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46
How much of the ATLAS of finite groups is independently checked and/or computer verified?
43
Does a finite simple group of order divisible by $60$ have $A_{5}$ as a subgroup?
40
How many square roots can a non-identity element in a group have?
34
Are there any nontrivial ring homomorphisms $M_{n+1}(R)\rightarrow M_n(R)$?
32
"Squeezing" a finite group between symmetric groups

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