User Stefan Kohl

10 votes

When is 2 qualitatively different from 3?

answered Nov 9 at 22:05

10 votes

Accepted

Is it true that every f.g. infinite simple group has exponential growth?

answered Apr 3, 2016 at 16:15

10 votes

Finite groups with elements of the same order

answered Nov 17, 2015 at 13:33

9 votes

Transitive permutation groups which all of their proper subgroups are intransitive

answered Apr 14, 2016 at 20:29

9 votes

How do most people write permutations?

answered Dec 9, 2013 at 12:56

9 votes

Accepted

Bounding from below the cardinality of a set of generators of the $n$-fold cartesian product of a finite group

answered Nov 16, 2014 at 0:28

9 votes

Probability that randomly chosen integers from a restricted set of natural numbers are coprime

answered Jan 30, 2013 at 10:50

8 votes

Accepted

Notation of Wilson's book "The finite simple groups"

answered Jan 6, 2013 at 11:42

8 votes

Any other definition for algebraic number than the root of algebraic equation?

answered Mar 7, 2013 at 13:26

8 votes

Accepted

Counting conjugacy classes in simple groups of Lie type

answered Jun 1, 2013 at 16:04

8 votes

Accepted

Is it true that $p^2+1$ is square free if $p>7$ is a Mersenne prime

answered May 2, 2013 at 9:23

8 votes

Accepted

A question about (unicity of certain cycles in a Cayley graph of a) symmetric group

answered Apr 23, 2016 at 16:10

8 votes

Accepted

The exponential Diophantine equation $a^n-b^m=x^3+y^3$ for arbitrary large $n,m$

answered May 1, 2016 at 20:24

8 votes

Explicit free subgroup in Thompson's group $V$

answered Mar 22, 2016 at 21:26

8 votes

Faithful projective representations of symmetric groups

answered Oct 29, 2015 at 14:27

7 votes

Accepted

Structure of the group generated by two specific symplectic matrices

answered Oct 30, 2015 at 23:37

7 votes

Accepted

A finitely presented group with two simple relations

answered Jun 7, 2015 at 15:33

7 votes

Cayley graphs of $A_n.$

answered Apr 4, 2016 at 9:26

7 votes

Accepted

Finite groups of order $n$ having exactly $n$ subgroups

answered Dec 4, 2015 at 13:28

7 votes

Order of products of elements in symmetric groups

answered Apr 1, 2016 at 17:07

7 votes

Examples of eventual counterexamples

answered Apr 14 at 17:21

7 votes

Examples of eventual counterexamples

answered Aug 4, 2019 at 12:24

7 votes

Is the $n$-th prime $p_n$ expressible as the difference of coprime $A, B$ such that the set of prime divisors of $AB$ is $\{p_1, \dots, p_{n-1}\}$?

answered Mar 9, 2013 at 15:33

7 votes

Accepted

My output of a group and inverse-closed subset in MAGMA is no longer inverse-closed when entered as input to GAP.

answered Feb 12, 2013 at 13:36

7 votes

Maximal order of finite subgroups of $GL(n,Z)$

answered May 27, 2014 at 12:12

6 votes

Accepted

How large can abelian subgroups of class 2 nilpotent groups or simple groups be?

answered Nov 27, 2013 at 11:28

6 votes

Another quotient of Hurwitz group

answered Nov 21, 2013 at 11:48

6 votes

About the number of their conjugacy classes in some classes of finite simple groups

answered Dec 24, 2014 at 15:02

6 votes

Algorithm for solving systems of linear Diophantine inequalities

answered Feb 16, 2015 at 17:45

6 votes

Classification of generously transitive groups

answered Mar 1, 2013 at 14:34

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150 Answers

When is 2 qualitatively different from 3?

Is it true that every f.g. infinite simple group has exponential growth?

Finite groups with elements of the same order

Transitive permutation groups which all of their proper subgroups are intransitive

How do most people write permutations?

Bounding from below the cardinality of a set of generators of the $n$-fold cartesian product of a finite group

Probability that randomly chosen integers from a restricted set of natural numbers are coprime

Notation of Wilson's book "The finite simple groups"

Any other definition for algebraic number than the root of algebraic equation?

Counting conjugacy classes in simple groups of Lie type

Is it true that $p^2+1$ is square free if $p>7$ is a Mersenne prime

A question about (unicity of certain cycles in a Cayley graph of a) symmetric group

The exponential Diophantine equation $a^n-b^m=x^3+y^3$ for arbitrary large $n,m$

Explicit free subgroup in Thompson's group $V$

Faithful projective representations of symmetric groups

Structure of the group generated by two specific symplectic matrices

A finitely presented group with two simple relations

Cayley graphs of $A_n.$

Finite groups of order $n$ having exactly $n$ subgroups

Order of products of elements in symmetric groups

Examples of eventual counterexamples

Examples of eventual counterexamples

Is the $n$-th prime $p_n$ expressible as the difference of coprime $A, B$ such that the set of prime divisors of $AB$ is $\{p_1, \dots, p_{n-1}\}$?

My output of a group and inverse-closed subset in MAGMA is no longer inverse-closed when entered as input to GAP.

Maximal order of finite subgroups of $GL(n,Z)$

How large can abelian subgroups of class 2 nilpotent groups or simple groups be?

Another quotient of Hurwitz group

About the number of their conjugacy classes in some classes of finite simple groups

Algorithm for solving systems of linear Diophantine inequalities

Classification of generously transitive groups