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the_fox
  • Member for 8 years, 2 months
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981 votes
281 answers
311k views

Examples of common false beliefs in mathematics

  • 27.6k
283 votes
34 answers
34k views

Which journals publish expository work?

138 votes
65 answers
33k views

Important formulas in combinatorics

  • 23.5k
54 votes
28 answers
11k views

Nontrivial question about Fibonacci numbers?

  • 583
45 votes
3 answers
3k views

Citing exercises in an article

  • 2,949
34 votes
2 answers
2k views

Does iterating a certain function related to the sums of divisors eventually always result in a prime value?

  • 337
33 votes
2 answers
5k views

Smallest permutation representation of a finite group?

32 votes
2 answers
2k views

Is every finite group the outer automorphism group of a finite group?

  • 630
28 votes
4 answers
2k views

For a continuous function $f:\mathbb{R}^{+}\to\mathbb{R}^{+}$ does $(f(x)-f(y)) (f(\frac{x+y}{2}) - f(\sqrt{xy}))=0$ imply that $f$ is constant?

19 votes
2 answers
2k views

Constants for Rolle's Theorem applied to polynomials

18 votes
3 answers
2k views

A question on the prime divisors of p-1

  • 2,625
16 votes
2 answers
2k views

Groups with all normal subgroups characteristic

  • 12.2k
16 votes
4 answers
1k views

Origin of group theory problem (bound on number of Sylow subgroups)

  • 1,474
14 votes
3 answers
814 views

On the number of consecutive divisors of an integer

  • 2,625
14 votes
2 answers
870 views

Inconsistencies in MathSciNet citation database

9 votes
0 answers
284 views

An abstract zero-sum problem

  • 1,119
9 votes
1 answer
2k views

Non-trivial consequences of Baer's theorem and Lucchini's theorem in subnormality theory

8 votes
1 answer
1k views

Counting subspaces

  • 347
8 votes
2 answers
538 views

Finite groups with centerless quotients

8 votes
1 answer
1k views

Groups with a unique composition series

8 votes
1 answer
951 views

On the existence of a direct summand containing a fixed subgroup

  • 123
7 votes
1 answer
339 views

Conditions for a finite group to be isomorphic to its automorphism group

6 votes
4 answers
1k views

Degree of commutativity of finite groups and subgroups

6 votes
0 answers
446 views

On the average number of subgroups per conjugacy class

  • 347
5 votes
1 answer
281 views

abelian and nonabelian parts of Aut($\widehat{F_2}$)

  • 9,055
2 votes
0 answers
275 views

Reference request

  • 102
2 votes
1 answer
315 views

Abelian subgroups of maximum order in $p$-Groups

  • 1,111
2 votes
1 answer
829 views

Presentation for a group with an abelian subgroup of index 2