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earned this badge 358 times.
Six yolks in a bowl: Why not optimal circle packing? [closed]
Awarded Jan 21, 2019 at 3:50
Limit of distance between two random points in a unit $n$-cube
Awarded Dec 14, 2018 at 15:00
How nearly abelian are nilpotent groups?
Awarded Sep 10, 2018 at 16:40
Egg-ovoid rolling down an inclined plane
Awarded Aug 2, 2018 at 16:45
Extensions of the Koebe–Andreev–Thurston theorem to sphere packing?
Awarded Aug 2, 2018 at 16:35
"Long-standing conjectures in analysis ... often turn out to be false"
Awarded Jul 26, 2018 at 9:20
Periodic billiard paths in hyperbolic triangles
Awarded Jul 15, 2018 at 22:29
What is the smallest sphere whose surface includes 100 integer points?
Awarded Jun 21, 2018 at 19:13
If a triangle can be displaced without distortion, must the surface have constant curvature?
Awarded Jun 18, 2018 at 5:01
Tying knots via gravity-assisted spaceship trajectories
Awarded Jun 2, 2018 at 0:12
Tangled random triangles: One giant component?
Awarded Apr 30, 2018 at 14:47
Polynomials dense with primes
Awarded Apr 22, 2018 at 6:43
Can one "hear" the shape of a polygon via external reflections?
Awarded Apr 19, 2018 at 14:03
Longest path through hypercube corners
Awarded Apr 15, 2018 at 11:22
Equitably distributed curve on a sphere
Awarded Feb 18, 2018 at 23:56
Annihilating random walkers
Awarded Feb 6, 2018 at 13:52
'Eigenvectors' of evolute operation
Awarded Jan 10, 2018 at 16:39
Dodecahedral rolling distance
Awarded Dec 18, 2017 at 14:46
Random Reidemeister moves to unknot
Awarded Nov 23, 2017 at 16:57
Trapping lightrays with segment mirrors
Awarded Nov 16, 2017 at 0:13
Computational complexity of finding the smallest number with n factors
Awarded Nov 4, 2017 at 20:48
A random walk on an infinite graph is recurrent iff ...?
Awarded Oct 22, 2017 at 23:05
Random walk on a Penrose tiling
Awarded Sep 27, 2017 at 9:00
Intuition for the infinite cardinals p and t (now that p = t)?
Awarded Sep 15, 2017 at 13:19
Reorienting a ladder among $\mathbb{Z}^2$ poles
Awarded Sep 13, 2017 at 18:08
Primary definition of a geodesic
Awarded Aug 28, 2017 at 10:10
Path length of ball on tilted, perforated plane
Awarded Aug 21, 2017 at 12:03
When is the hull of a space curve composed of developable patches?
Awarded Aug 17, 2017 at 15:26
Omniscient bots gathering on $\mathbb{Z}^2$
Awarded Aug 11, 2017 at 16:59
Minimizing the excursion of a sum of unit vectors
Awarded Jul 30, 2017 at 12:10
Illuminating piecewise-flat manifolds with geodesics
Awarded Jul 3, 2017 at 22:44
Random N-body problem
Awarded Jun 20, 2017 at 11:21
Circle-arc number of a knot
Awarded Jun 15, 2017 at 7:25
Integer matrices whose determinant equals their norm
Awarded Jun 5, 2017 at 14:56
When has discrete understanding preceded continuous?
Awarded May 29, 2017 at 7:52
Do bubbles between plates approximate Voronoi diagrams?
Awarded May 22, 2017 at 16:10
Surface in 3D that realizes all pairs of principal curvatures
Awarded May 13, 2017 at 1:09
Minimal blocking objects with shadows like a cube
Awarded May 12, 2017 at 12:47
Limit shape for fixed-perimeter lattice polygons
Awarded Apr 28, 2017 at 13:57
Prime square offsets: Why is +7 more frequent than -7?
Awarded Apr 27, 2017 at 17:53
"Transcendental tilings": Do they exist?
Awarded Apr 22, 2017 at 3:04
Is every rational realized as the Euler characteristic of some manifold or orbifold?
Awarded Apr 13, 2017 at 14:34
Does projection of 3D points reduce distances by exactly 1/3?
Awarded Apr 9, 2017 at 19:34
Random pseudoprimes vs. primes
Awarded Mar 31, 2017 at 2:35
Thurston's 24 questions: All settled?
Awarded Mar 25, 2017 at 7:31
Can a shape rolling inside itself reproduce that shape?
Awarded Mar 18, 2017 at 16:29
Lattice random walk under gravity
Awarded Mar 14, 2017 at 10:00
Not all manifolds can be triangulated: In which dimensions?
Awarded Mar 11, 2017 at 8:51
Bi-spherical polyhedra
Awarded Jan 25, 2017 at 12:50
Does 53 diverge to infinity in this Collatz-like sequence?
Awarded Jan 19, 2017 at 22:13
Relatively primes spirals
Awarded Dec 28, 2016 at 22:32
Polynomials all of whose roots are rational
Awarded Dec 16, 2016 at 16:17
What fraction of knots are ribbon knots?
Awarded Dec 12, 2016 at 9:32
Terrible tilers for covering the plane
Awarded Dec 4, 2016 at 15:57
Structures in the plot of the “squareness” of numbers
Awarded Nov 21, 2016 at 7:41
Are there irregular tilings by L-polyominoes?
Awarded Oct 15, 2016 at 18:28
Optimal sphere packings ==> Thinnest ball coverings?
Awarded Oct 7, 2016 at 16:33
Construction of an optimal electron cage
Awarded Sep 30, 2016 at 19:36
Geodesics in $\mathbb{R}^2 \times \mathbb{S}^1$ under "segment" metric
Awarded Aug 30, 2016 at 7:10
Sofa in a snaky 3D corridor
Awarded Aug 6, 2016 at 15:45
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