User Alex B.

62 votes

What notions are used but not clearly defined in modern mathematics?

answered Feb 26, 2011 at 6:13

47 votes

Accepted

Roots of permutations

answered Oct 11, 2010 at 14:22

45 votes

Accepted

Has Fermat's Last Theorem per se been used?

answered Aug 26, 2013 at 16:51

37 votes

Quick proofs of hard theorems

answered Oct 5, 2010 at 9:16

36 votes

Good ways to engage in mathematics outreach?

answered Dec 28, 2010 at 5:14

34 votes

Non-mathematician submitting to top maths journal?

answered Nov 24, 2010 at 7:19

26 votes

Accepted

Examples of elliptic curves over $\mathbb{Q}$

answered Feb 26, 2014 at 12:25

24 votes

When should a result be made into a paper?

answered Oct 11, 2010 at 1:48

21 votes

Accepted

Number fields with same zeta function?

answered Nov 9, 2011 at 0:26

19 votes

Accepted

how to compute Hilbert class field of $\Bbb Q(\zeta_{23})$?

answered Dec 30, 2020 at 12:32

19 votes

Accepted

How to picture $\mathbb{C}_p$?

answered Jan 13, 2011 at 4:04

17 votes

Accepted

Order of Ш (Sha)

answered Apr 30, 2012 at 8:20

17 votes

The modular arithmetic contradiction trick for Diophantine equations

answered Jun 21, 2013 at 8:33

16 votes

Accepted

Finite groups with integral character table

answered Aug 17, 2022 at 7:11

16 votes

Accepted

A finite group $G$ all of whose reps are defined over $\mathbb{Z}$ and yet $Rep(G)$ is not generated by permutation representations

answered Jul 2, 2019 at 13:37

16 votes

Accepted

Is there any conditions on a finite abelian group so that it cannot be class group of any number field?

answered Jul 16, 2019 at 18:13

16 votes

Accepted

Regulators of Number fields and Elliptic Curves

answered Sep 13, 2010 at 10:40

16 votes

Accepted

Computational algebra: where?

answered Nov 12, 2010 at 11:45

15 votes

Accepted

Z/48 and Moonshine Beyond the Monster

answered Nov 9, 2010 at 0:00

15 votes

Basic software libraries for numerical analysis using modern programming languages?

answered Oct 13, 2010 at 9:18

14 votes

Heuristics of Cohen-Lenstra-Martinet

answered Oct 20, 2022 at 12:01

14 votes

Accepted

Finite order elements of $\mathrm{GL}_d(\mathbb{Z})$ that are conjugate to powers of themselves

answered Feb 3, 2021 at 23:20

14 votes

Algebra with a certain abelian group as the multiplicative group

answered Oct 8, 2020 at 11:49

13 votes

Conjugacy classes of PGL(3,Z)

answered Oct 9, 2013 at 14:43

13 votes

Fermat's last theorem over larger fields

answered Nov 25, 2014 at 14:35

13 votes

Branching rule from symmetric group $S_{2n}$ to hyperoctahedral group $H_n$

answered Dec 7, 2010 at 5:27

13 votes

Accepted

Conjugacy for $p$-adic matrices of finite order

answered Aug 6, 2011 at 11:21

12 votes

An explicit computation in class field theory

answered Oct 20, 2010 at 1:07

12 votes

What is this subgroup of $\mathfrak S_{12}$?

answered Nov 12, 2010 at 16:50

12 votes

On a minimal algebraic number field which satisfies the principal ideal theorem

answered Nov 25, 2014 at 10:36

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140 Answers

What notions are used but not clearly defined in modern mathematics?

Roots of permutations

Has Fermat's Last Theorem per se been used?

Quick proofs of hard theorems

Good ways to engage in mathematics outreach?

Non-mathematician submitting to top maths journal?

Examples of elliptic curves over $\mathbb{Q}$

When should a result be made into a paper?

Number fields with same zeta function?

how to compute Hilbert class field of $\Bbb Q(\zeta_{23})$?

How to picture $\mathbb{C}_p$?

Order of Ш (Sha)

The modular arithmetic contradiction trick for Diophantine equations

Finite groups with integral character table

A finite group $G$ all of whose reps are defined over $\mathbb{Z}$ and yet $Rep(G)$ is not generated by permutation representations

Is there any conditions on a finite abelian group so that it cannot be class group of any number field?

Regulators of Number fields and Elliptic Curves

Computational algebra: where?

Z/48 and Moonshine Beyond the Monster

Basic software libraries for numerical analysis using modern programming languages?

Heuristics of Cohen-Lenstra-Martinet

Finite order elements of $\mathrm{GL}_d(\mathbb{Z})$ that are conjugate to powers of themselves

Algebra with a certain abelian group as the multiplicative group

Conjugacy classes of PGL(3,Z)

Fermat's last theorem over larger fields

Branching rule from symmetric group $S_{2n}$ to hyperoctahedral group $H_n$

Conjugacy for $p$-adic matrices of finite order

An explicit computation in class field theory

What is this subgroup of $\mathfrak S_{12}$?

On a minimal algebraic number field which satisfies the principal ideal theorem