Wlodek Kuperberg's user avatar
Wlodek Kuperberg's user avatar
Wlodek Kuperberg's user avatar
Wlodek Kuperberg
  • Member for 10 years, 8 months
  • Last seen this week
  • Auburn University, AL
65 votes
3 answers
3k views

How many unit cylinders can touch a unit ball?

51 votes
3 answers
2k views

Can the sphere be partitioned into small congruent cells?

41 votes
6 answers
2k views

Approximating a convex disk by an ellipse

31 votes
5 answers
1k views

Fair cutting of the plane with lines

28 votes
0 answers
537 views

Can every 3-dimensional convex body be trapped in a tetrahedral cage?

23 votes
2 answers
525 views

Trapping a convex body by a finite set of points

17 votes
4 answers
738 views

Volume of convex lattice polytopes with one interior lattice point

16 votes
2 answers
1k views

Maximum area of the intersection of a parallelogram and a triangle

16 votes
2 answers
943 views

Tiling the square with rectangles of small diagonals

16 votes
1 answer
576 views

(A question about)${}^3$ 3-dimensional convex bodies

14 votes
2 answers
268 views

Short arc of small curvature whose every planar shadow crosses itself

13 votes
0 answers
252 views

Planar arc on a topologically embedded sphere or disk in $\mathbb{R}^3$

11 votes
2 answers
448 views

Metrically homogeneous subsets of the plane

10 votes
1 answer
302 views

Space-tiling convex prisms

9 votes
3 answers
597 views

Line-preserving bijection of ${\mathbb{R}}^n$ onto itself

9 votes
0 answers
190 views

A small planar set containing a large family of curves

9 votes
2 answers
422 views

Density of a saturated random packing of congruent circles

9 votes
3 answers
792 views

Balanced circle packing

8 votes
1 answer
608 views

Small quadrilaterals containing a given convex region

8 votes
2 answers
280 views

An affine characterization of ellipsoids?

7 votes
1 answer
312 views

Minimum area of the convex hull of the union of a parallelogram and a triangle

6 votes
2 answers
203 views

Splitting the $n$-cube into two small congruent convex halves

5 votes
1 answer
155 views

Cutting a convex body into two congruent pieces

3 votes
0 answers
160 views

A perfectly round and optimal version of Antoine’s necklace