User Bugs Bunny

61 votes

13 answers

8k views

Example of an unnatural isomorphism

asked Aug 14, 2013 at 7:30

47 votes

4 answers

21k views

When is $L^2(X)$ separable?

asked Oct 15, 2010 at 17:13

28 votes

2 answers

7k views

How to solve a quadratic equation in characteristic 2 ?

asked Nov 18, 2010 at 16:55

17 votes

6 answers

5k views

What is a good book on topological groups?

asked Oct 1, 2012 at 16:51

17 votes

0 answers

578 views

Bunnity of multilinear maps

asked May 10, 2015 at 14:36

15 votes

5 answers

6k views

Sheaves without global sections

asked Oct 25, 2010 at 22:24

14 votes

2 answers

755 views

Invariants and orbits of $n$-tensors

asked Jun 15, 2011 at 21:22

14 votes

0 answers

819 views

Cardinality of the set of continuous functions

asked Feb 8, 2020 at 18:58

13 votes

4 answers

5k views

What is the universal enveloping algebra?

asked May 17, 2010 at 15:23

11 votes

3 answers

2k views

What is a (generalized) BN-pair?

asked Jun 27, 2012 at 8:34

11 votes

1 answer

1k views

Existence of skeletons in ZFC

asked Oct 26 at 11:42

11 votes

1 answer

349 views

The Locus of Complete Intersection Points

asked Nov 16, 2018 at 9:26

11 votes

0 answers

274 views

Greedy permutation of the set $\{1,2,\dots,n\}$ and prime numbers

asked Jun 8, 2016 at 15:20

9 votes

1 answer

2k views

Projectives and Injectives in Functor Categories

asked Apr 8, 2014 at 12:17

9 votes

1 answer

299 views

$\lambda$-ring endomorphisms of ${\mathbb Z}[x]$

asked Aug 29 at 9:40

9 votes

1 answer

539 views

Unitary Representations of $GL_2({\mathbb Q}_p)$

asked Jul 4, 2012 at 11:32

9 votes

3 answers

743 views

How can I tell whether a manifold is homogeneous?

asked Jul 18, 2012 at 7:49

9 votes

1 answer

930 views

Saavedra's Definition of Tannakian Category

asked Sep 13, 2012 at 14:30

9 votes

3 answers

1k views

Why is symmetric group not matrix?

asked Oct 28, 2010 at 20:52

8 votes

0 answers

512 views

Skew polynomial algebra

asked Apr 14, 2010 at 11:36

8 votes

2 answers

712 views

Irreducible representations of simple complex groups

asked Jan 13, 2017 at 10:59

7 votes

2 answers

646 views

$n$-path-connected components of a variety

asked Nov 26, 2012 at 21:01

6 votes

0 answers

431 views

Ever seen a ringed group?

asked Sep 28, 2010 at 8:37

5 votes

1 answer

901 views

When is the image of a regular map an algebraic variety?

asked Mar 29, 2018 at 10:18

5 votes

1 answer

762 views

Are there enough meromorphic functions on a compact analytic manifold?

asked Oct 15, 2018 at 16:34

4 votes

0 answers

134 views

Do comodules form an exact category?

asked Jun 25, 2019 at 11:45

4 votes

1 answer

710 views

How to compute Homotopy Pullback

asked Mar 10, 2021 at 21:03

4 votes

0 answers

235 views

Second symmetric square of the adjoint representation

asked May 16, 2018 at 7:52

4 votes

0 answers

151 views

Nilpotent orbits and subspaces

asked May 16, 2015 at 23:04

4 votes

0 answers

272 views

First Fundamental Theorem for Alternating Group

asked Jan 22, 2014 at 12:04

Stack Exchange Network

37 Questions

Example of an unnatural isomorphism

When is $L^2(X)$ separable?

How to solve a quadratic equation in characteristic 2 ?

What is a good book on topological groups?

Bunnity of multilinear maps

Sheaves without global sections

Invariants and orbits of $n$-tensors

Cardinality of the set of continuous functions

What is the universal enveloping algebra?

What is a (generalized) BN-pair?

Existence of skeletons in ZFC

The Locus of Complete Intersection Points

Greedy permutation of the set $\{1,2,\dots,n\}$ and prime numbers

Projectives and Injectives in Functor Categories

$\lambda$-ring endomorphisms of ${\mathbb Z}[x]$

Unitary Representations of $GL_2({\mathbb Q}_p)$

How can I tell whether a manifold is homogeneous?

Saavedra's Definition of Tannakian Category

Why is symmetric group not matrix?

Skew polynomial algebra

Irreducible representations of simple complex groups

$n$-path-connected components of a variety

Ever seen a ringed group?

When is the image of a regular map an algebraic variety?

Are there enough meromorphic functions on a compact analytic manifold?

Do comodules form an exact category?

How to compute Homotopy Pullback

Second symmetric square of the adjoint representation

Nilpotent orbits and subspaces

First Fundamental Theorem for Alternating Group