User N. Virgo - Mathematics Stack Exchange

55 votes

5 answers

5k views

What do logicians mean by "type"?

asked Mar 11, 2018 at 11:18

21 votes

6 answers

8k views

In what sense is the Jeffreys prior invariant?

asked Oct 10, 2012 at 18:38

20 votes

4 answers

4k views

How can we know we're not accidentally talking about non-standard integers?

asked Mar 5, 2018 at 2:54

17 votes

1 answer

3k views

Is it really impossible to lose the Hydra game?

asked May 22, 2016 at 2:38

17 votes

1 answer

733 views

What is the essential difference between classical and quantum information geometry?

asked Jun 8, 2018 at 2:39

16 votes

3 answers

1k views

Universal property for tensor product in an arbitrary category

asked Apr 27, 2020 at 17:59

15 votes

2 answers

1k views

A group acting on functions of functions of functions

asked May 19, 2014 at 2:24

13 votes

1 answer

868 views

An unusual type of linear algebra problem

asked Apr 28, 2013 at 8:09

13 votes

3 answers

601 views

Can nonstandard analysis give a uniform probability distribution over the integers?

asked Jun 9, 2018 at 1:20

11 votes

1 answer

493 views

Are these two sequences the same?

asked Mar 6, 2016 at 4:19

10 votes

2 answers

2k views

Necessary and sufficient conditions for left and right eigenvectors to be equal

asked Mar 21, 2016 at 4:40

10 votes

1 answer

362 views

Are there finite dimensional matrices for which $e^{A+B}=e^Ae^B$ when $A$ and $B$ do not commute?

asked Apr 20, 2023 at 3:26

9 votes

1 answer

187 views

Does this "leaky isomorphism" concept have a name?

asked Feb 21, 2020 at 10:09

9 votes

2 answers

823 views

Does the matrix exponential have this convexity property?

asked Feb 20, 2017 at 2:48

8 votes

1 answer

3k views

Properties of the per-element exponential (Hadamard exponential) for matrices

asked Dec 31, 2015 at 6:11

8 votes

2 answers

2k views

Intuition for Möbius function on a poset

asked Nov 11, 2017 at 2:29

8 votes

2 answers

1k views

infinite matrix leading eigenvalue problem

asked Feb 3, 2014 at 8:47

8 votes

1 answer

1k views

Understanding the Giry monad

asked Mar 7, 2020 at 12:03

7 votes

2 answers

376 views

Introduction to category theory with examples in probability/statistics

asked Mar 3, 2020 at 16:25

7 votes

1 answer

248 views

Is the inner product really needed in convex analysis?

asked May 18, 2020 at 20:55

7 votes

2 answers

361 views

Can a functor be seen as a special case of a profunctor?

asked Jun 24, 2020 at 11:23

7 votes

1 answer

2k views

Exponential of matrix with negative entries only on the diagonal

asked May 1, 2014 at 7:32

7 votes

1 answer

8k views

Proof that a log-of-sum-of-exponentials is a convex function

asked Jun 9, 2015 at 4:55

6 votes

1 answer

5k views

General formula for the exponential of a block matrix

asked Oct 23, 2015 at 5:29

6 votes

1 answer

680 views

Linearising a dynamical system at an arbitrary point (affine dynamical systems)

asked Sep 1, 2014 at 3:51

6 votes

1 answer

275 views

A group acting on colourings of a set

asked May 8, 2014 at 4:01

6 votes

3 answers

804 views

How to solve this infinite set of equations?

asked Jan 7, 2014 at 7:13

6 votes

1 answer

1k views

Can a unitary matrix be constructed from any doubly stochastic matrix?

asked Jan 7, 2014 at 10:43

6 votes

1 answer

421 views

Explanation of Aumann's "agreeing to disagree" in modern notation

asked Jul 23, 2016 at 0:31

6 votes

3 answers

270 views

Polyhedra that cover the sphere more than once

asked Nov 5, 2019 at 5:06

Stack Exchange Network

112 Questions

What do logicians mean by "type"?

In what sense is the Jeffreys prior invariant?

How can we know we're not accidentally talking about non-standard integers?

Is it really impossible to lose the Hydra game?

What is the essential difference between classical and quantum information geometry?

Universal property for tensor product in an arbitrary category

A group acting on functions of functions of functions

An unusual type of linear algebra problem

Can nonstandard analysis give a uniform probability distribution over the integers?

Are these two sequences the same?

Necessary and sufficient conditions for left and right eigenvectors to be equal

Are there finite dimensional matrices for which $e^{A+B}=e^Ae^B$ when $A$ and $B$ do not commute?

Does this "leaky isomorphism" concept have a name?

Does the matrix exponential have this convexity property?

Properties of the per-element exponential (Hadamard exponential) for matrices

Intuition for Möbius function on a poset

infinite matrix leading eigenvalue problem

Understanding the Giry monad

Introduction to category theory with examples in probability/statistics

Is the inner product really needed in convex analysis?

Can a functor be seen as a special case of a profunctor?

Exponential of matrix with negative entries only on the diagonal

Proof that a log-of-sum-of-exponentials is a convex function

General formula for the exponential of a block matrix

Linearising a dynamical system at an arbitrary point (affine dynamical systems)

A group acting on colourings of a set

How to solve this infinite set of equations?

Can a unitary matrix be constructed from any doubly stochastic matrix?

Explanation of Aumann's "agreeing to disagree" in modern notation

Polyhedra that cover the sphere more than once