User Hao Chen

32 votes

4 answers

4k views

When is an erratum necessary?

asked Nov 20, 2015 at 12:11

14 votes

0 answers

2k views

How many unit balls can be put into a unit cube?

asked Feb 19, 2013 at 14:05

12 votes

1 answer

449 views

What can we learn from the newly discovered monohedral convex pentagonal tiling?

asked Aug 24, 2015 at 21:56

11 votes

1 answer

370 views

What is known about the chromatic number for minimum-distance graphs in higher dimensions?

asked Oct 20, 2014 at 19:37

9 votes

0 answers

290 views

Neighborly family of coins

asked Mar 2, 2015 at 14:06

7 votes

2 answers

186 views

Graph embedding that locally minimizes total edge lengths

asked Oct 23, 2020 at 10:54

7 votes

1 answer

343 views

For a 3D Apollonian packing, do we really know that the Hausdorff dimension of the complement is approximated by the growth rate of curvature?

asked Jul 10, 2014 at 22:50

7 votes

2 answers

446 views

Are there infinitely many commensurable classes of finite-covolume hyperbolic Coxeter groups?

asked Apr 23, 2014 at 8:50

6 votes

1 answer

572 views

How does the distribution of Erdős number evolve over time ? How to build a model to fit the real data ?

asked Jun 20, 2012 at 9:01

5 votes

1 answer

267 views

Generalized Plateau problem with non-Jordan boundary

asked Feb 14, 2016 at 15:47

5 votes

0 answers

96 views

Is every space group the symmetry group of some triply periodic minimal surface?

asked Nov 25, 2016 at 22:49

5 votes

1 answer

831 views

Non-zero winding number on a space curve implies a linked curve in the zero set?

asked Apr 18, 2019 at 13:45

4 votes

1 answer

1k views

"Codes" in which a group of words are pairwise different at a certain position

asked Jun 20, 2014 at 13:26

4 votes

0 answers

170 views

Graph drawing maximizing the volume of the convex hull

asked Mar 18, 2013 at 12:53

3 votes

1 answer

561 views

Eigenvalues for elements of (infinite) Coxeter groups

asked Jun 21, 2013 at 13:46

3 votes

0 answers

551 views

Is the limit set of a group action always closed?

asked Nov 26, 2013 at 22:53

3 votes

0 answers

101 views

Symmetries of irregular simplices

asked Oct 7, 2017 at 0:09

3 votes

0 answers

115 views

Infinite counter-examples to Borsuk conjecture

asked Feb 12, 2015 at 6:29

3 votes

1 answer

146 views

Applications of maximal surfaces in Lorentz spaces

asked Jun 4, 2023 at 9:27

2 votes

1 answer

134 views

How many edges guarantee an expander?

asked Apr 16, 2015 at 14:28

2 votes

0 answers

82 views

Are the following hyperplane arrangements previously studied?

asked Oct 27, 2017 at 21:54

2 votes

1 answer

134 views

Behaviour of elliptic functions near degenerate lattice

asked Jun 16, 2018 at 9:56

1 vote

0 answers

72 views

What are / could be the applications of Delaunay oriented matroids?

asked Oct 14, 2014 at 8:04

1 vote

0 answers

309 views

Which term is better for the so called "sphere packing"?

asked Dec 7, 2012 at 10:52

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24 Questions

When is an erratum necessary?

How many unit balls can be put into a unit cube?

What can we learn from the newly discovered monohedral convex pentagonal tiling?

What is known about the chromatic number for minimum-distance graphs in higher dimensions?

Neighborly family of coins

Graph embedding that locally minimizes total edge lengths

For a 3D Apollonian packing, do we really know that the Hausdorff dimension of the complement is approximated by the growth rate of curvature?

Are there infinitely many commensurable classes of finite-covolume hyperbolic Coxeter groups?

How does the distribution of Erdős number evolve over time ? How to build a model to fit the real data ?

Generalized Plateau problem with non-Jordan boundary

Is every space group the symmetry group of some triply periodic minimal surface?

Non-zero winding number on a space curve implies a linked curve in the zero set?

"Codes" in which a group of words are pairwise different at a certain position

Graph drawing maximizing the volume of the convex hull

Eigenvalues for elements of (infinite) Coxeter groups

Is the limit set of a group action always closed?

Symmetries of irregular simplices

Infinite counter-examples to Borsuk conjecture

Applications of maximal surfaces in Lorentz spaces

How many edges guarantee an expander?

Are the following hyperplane arrangements previously studied?

Behaviour of elliptic functions near degenerate lattice

What are / could be the applications of Delaunay oriented matroids?

Which term is better for the so called "sphere packing"?