User Matthew Kahle

47 votes

Which math paper maximizes the ratio (importance)/(length)?

answered May 4, 2011 at 20:33

42 votes

Most intricate and most beautiful structures in mathematics

answered Dec 13, 2010 at 20:08

36 votes

Open problems with monetary rewards

answered May 26, 2011 at 18:17

33 votes

Open problems in Euclidean geometry?

answered Jan 30, 2011 at 19:40

32 votes

Accepted

Configuration space of little disks inside a big disk

answered Mar 25, 2011 at 21:04

26 votes

Why tropical geometry?

answered Dec 16, 2011 at 19:19

22 votes

Why do wedges of spheres often appear in combinatorics?

answered Sep 22, 2010 at 20:29

18 votes

A set for which it is hard to determine whether or not it is countable.

answered Mar 21, 2011 at 23:53

16 votes

Accepted

Number of non-Abelian groups of order $2^n$

answered Jul 3, 2010 at 1:30

15 votes

What are some mathematical sculptures?

answered Jul 19, 2010 at 23:19

15 votes

Small simplicial complexes with torsion in their homology?

answered Jul 31, 2017 at 15:41

13 votes

Accepted

How many simplicial complexes on n vertices up to homotopy equivalence?

answered Apr 20, 2018 at 0:26

12 votes

Examples of non-simply connected manifolds with trivial H^1

answered Jul 7, 2011 at 12:06

12 votes

On the number of Archimedean solids

answered Nov 18, 2010 at 18:25

11 votes

Computational software in Algebraic Topology?

answered Mar 2, 2011 at 20:58

11 votes

Lower bounds for chromatic number of a graph

answered Jul 29, 2010 at 18:48

11 votes

What are some examples of colorful language in serious mathematics papers?

answered Jul 11, 2011 at 16:05

10 votes

Accepted

Pennies on a carpet problem

answered Sep 2, 2010 at 7:02

9 votes

Accepted

Clique sizes in a unit disk graph

answered Sep 9, 2011 at 19:40

8 votes

Small simplicial complexes with torsion in their homology?

answered Sep 17, 2012 at 18:46

8 votes

Is there a dense subset of the real plane with all pairwise distances rational?

answered Apr 7, 2010 at 6:00

8 votes

Are "most" spaces aspherical?

answered Oct 21, 2020 at 16:53

7 votes

Accepted

Covering of a graph via independent sets

answered Sep 3, 2010 at 18:42

7 votes

Accepted

The shortest path in first passage percolation

answered Jan 22, 2017 at 22:57

6 votes

Is being simply connected very rare?

answered Oct 20, 2020 at 20:19

6 votes

Estimating the fractal dimension of a point cloud

answered Aug 29, 2011 at 2:10

4 votes

Accepted

Average degree of contact graph for balls in a box

answered Jul 27, 2011 at 22:46

4 votes

Generalization or Improvement of Cheeger inequality on Graphs

answered Apr 2, 2011 at 14:04

3 votes

Applications of the notion of of Gromov-Hausdorff distance

answered Feb 28, 2011 at 2:16

3 votes

How to describe a tree? (depth, degree, balance, ... what else?)

answered Sep 1, 2010 at 17:21

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41 Answers

Which math paper maximizes the ratio (importance)/(length)?

Most intricate and most beautiful structures in mathematics

Open problems with monetary rewards

Open problems in Euclidean geometry?

Configuration space of little disks inside a big disk

Why tropical geometry?

Why do wedges of spheres often appear in combinatorics?

A set for which it is hard to determine whether or not it is countable.

Number of non-Abelian groups of order $2^n$

What are some mathematical sculptures?

Small simplicial complexes with torsion in their homology?

How many simplicial complexes on n vertices up to homotopy equivalence?

Examples of non-simply connected manifolds with trivial H^1

On the number of Archimedean solids

Computational software in Algebraic Topology?

Lower bounds for chromatic number of a graph

What are some examples of colorful language in serious mathematics papers?

Pennies on a carpet problem

Clique sizes in a unit disk graph

Small simplicial complexes with torsion in their homology?

Is there a dense subset of the real plane with all pairwise distances rational?

Are "most" spaces aspherical?

Covering of a graph via independent sets

The shortest path in first passage percolation

Is being simply connected very rare?

Estimating the fractal dimension of a point cloud

Average degree of contact graph for balls in a box

Generalization or Improvement of Cheeger inequality on Graphs

Applications of the notion of of Gromov-Hausdorff distance

How to describe a tree? (depth, degree, balance, ... what else?)