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RavenclawPrefect
  • Member for 8 years, 8 months
  • Last seen this week
  • Berkeley, CA, USA
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About

Big fan of interesting math puzzles. I think up lots of questions, and sometimes ask the more interesting/tricky ones here.

Contact me at "graham's number is big" sans punctuation or spaces at gmail, especially if you share my taste in mathematical problems!

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Top posts
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answer
22
Can you see through a cannonball packing?
Nov 30
question
22
What is the covering density of a very thin annulus? Is it $\frac{\pi\sqrt{51\sqrt{17}-107}}{16}$?
Jul 26, 2021
question
21
Does every 5-celled animal tile the plane?
Jan 5, 2021
answer
21
A hat puzzle question—how to prove the standard solution is optimal?
Jul 23
question
13
What are the known convex polyhedra with congruent faces?
Nov 10, 2020
answer
12
Tiling the plane with pairwise non-congruent rational triangles
Apr 27, 2023
question
11
Is it possible for the dihedral angles of a polyhedron to all grow simultaneously?
Mar 1
answer
9
Not especially famous, long-open problems which anyone can understand
Oct 21, 2022
answer
9
How can one construct a four-coloring of a tiling of the plane with Smith, Myers, Kaplan, and Goodman-Strauss's aperiodic monotile?
Mar 25, 2023
answer
8
Distribution over Penrose Tilings?
May 20, 2021
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110
What is the largest volume of a polyhedron whose skeleton has total length 1? Is it the regular triangular prism?
97
$6!\cdot 7!=10!$. Is there a natural bijection between $S_6\times S_7$ and $S_{10}$?
39
Hexagons are best for tiling 2D space in terms of perimeter vs area. What's best for 3D space?
37
Do nonconstructive proofs of isomorphism exist?
35
Is there (or can there be) a general algorithm to solve Rubik's cubes of any dimension?