User Valerio Capraro

72 votes

9 answers

9k views

What is a continuous path?

asked Nov 12, 2011 at 21:02

45 votes

8 answers

7k views

Getting nervous refereeing a paper

asked Nov 30, 2011 at 22:55

32 votes

1 answer

4k views

Do invariant measures maximize the integral?

asked Sep 2, 2011 at 18:46

28 votes

3 answers

4k views

A separable Banach space and a non-separable Banach space having the same dual space?

asked Oct 6, 2011 at 18:40

25 votes

3 answers

2k views

Why did Voiculescu develop free probability?

asked Jun 27, 2013 at 15:26

22 votes

0 answers

581 views

The multiplication game on the free group

asked May 31, 2012 at 14:19

22 votes

2 answers

2k views

Non standard Algebraic Topology

asked Jan 24, 2012 at 19:15

17 votes

2 answers

1k views

Connes' embedding conjecture for uncountable groups

asked Nov 6, 2011 at 15:56

15 votes

3 answers

3k views

Entropy of a measure

asked Jul 21, 2011 at 17:32

12 votes

1 answer

3k views

Doubling dimension of a Euclidean space

asked Jun 27, 2012 at 13:54

11 votes

2 answers

677 views

A question about groups of intermediate growth

asked Nov 10, 2011 at 0:34

11 votes

2 answers

3k views

Density of a set of natural numbers whose differences are not bounded.

asked May 27, 2011 at 13:50

10 votes

0 answers

3k views

Group Theory, Game Theory, a bit of Philosophy and a post in Tao's blog

asked Sep 29, 2011 at 22:21

10 votes

2 answers

700 views

Gromov-Hausdorff convergence for locally finite metric spaces

asked Dec 5, 2011 at 10:09

9 votes

2 answers

2k views

Does a notion of convex graph make sense?

asked Nov 1, 2011 at 14:36

9 votes

3 answers

602 views

Cross norms on tensor product of universal $C^*$-algebras and Kirchberg property

asked Mar 9, 2012 at 11:02

9 votes

3 answers

1k views

A density on the natural numbers invariant with respect to the multiplication

asked Mar 21, 2011 at 20:09

8 votes

1 answer

616 views

How big are the ultrapowers of the hyperfinite $II_1$-factor?

asked Sep 27, 2011 at 14:03

8 votes

1 answer

819 views

Who proved that a group of polynomial growth has growth exactly polynomial?

asked Nov 22, 2011 at 11:10

8 votes

0 answers

717 views

Density of countably additive measure in the set of all finitely additive measures.

asked Dec 28, 2011 at 14:15

7 votes

1 answer

483 views

A variational principle for amenable groups

asked Jan 23, 2012 at 18:03

7 votes

4 answers

2k views

Invariant means on the integers

asked Apr 7, 2011 at 7:23

6 votes

2 answers

458 views

Intrinsically measurable subsets of amenable semigroups.

asked May 18, 2011 at 12:57

6 votes

1 answer

545 views

Is there a name for the class of metric spaces such that the closure of the open ball of radius $r$ around each point $x$ is the set of elements $y$ such that $d(x,y)\leq r$ ?

asked Sep 6, 2011 at 14:48

6 votes

0 answers

253 views

Can a non-amenable group have a 'centrally invariant mean'?

asked May 23, 2012 at 8:30

5 votes

1 answer

454 views

Reference for the Brouwer fixed point theorem

asked Mar 6, 2012 at 10:07

5 votes

0 answers

245 views

Can invariant means be really considered as the generalization of the uniform measure?

asked Jun 5, 2012 at 13:13

5 votes

0 answers

315 views

Double ultrapower of the hyperfinite $II_1$-factor

asked Jun 11, 2013 at 22:58

5 votes

2 answers

940 views

A Brouwer fixed point theorem on finite sets

asked Oct 14, 2011 at 13:06

5 votes

2 answers

363 views

Invariant means on commutative magmas

asked Jun 5, 2011 at 12:05

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68 Questions

What is a continuous path?

Getting nervous refereeing a paper

Do invariant measures maximize the integral?

A separable Banach space and a non-separable Banach space having the same dual space?

Why did Voiculescu develop free probability?

The multiplication game on the free group

Non standard Algebraic Topology

Connes' embedding conjecture for uncountable groups

Entropy of a measure

Doubling dimension of a Euclidean space

A question about groups of intermediate growth

Density of a set of natural numbers whose differences are not bounded.

Group Theory, Game Theory, a bit of Philosophy and a post in Tao's blog

Gromov-Hausdorff convergence for locally finite metric spaces

Does a notion of convex graph make sense?

Cross norms on tensor product of universal $C^*$-algebras and Kirchberg property

A density on the natural numbers invariant with respect to the multiplication

How big are the ultrapowers of the hyperfinite $II_1$-factor?

Who proved that a group of polynomial growth has growth exactly polynomial?

Density of countably additive measure in the set of all finitely additive measures.

A variational principle for amenable groups

Invariant means on the integers

Intrinsically measurable subsets of amenable semigroups.

Is there a name for the class of metric spaces such that the closure of the open ball of radius $r$ around each point $x$ is the set of elements $y$ such that $d(x,y)\leq r$ ?

Can a non-amenable group have a 'centrally invariant mean'?

Reference for the Brouwer fixed point theorem

Can invariant means be really considered as the generalization of the uniform measure?

Double ultrapower of the hyperfinite $II_1$-factor

A Brouwer fixed point theorem on finite sets

Invariant means on commutative magmas