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RavenclawPrefect's user avatar
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RavenclawPrefect
  • Member for 7 years, 5 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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Posts
53
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Top posts
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All Questions Answers
Score Newest
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
12
Tiling the plane with pairwise non-congruent rational triangles
Apr 27
question
11
What are the known convex polyhedra with congruent faces?
Nov 10, 2020
answer
8
Distribution over Penrose Tilings?
May 20, 2021
answer
8
Finite set of non-collinear points on plane with every point having ≥ 3 equidistant neighbors?
Aug 4, 2022
answer
7
Intersecting cylinders around a sphere
Sep 16, 2022
answer
7
Not especially famous, long-open problems which anyone can understand
Oct 21, 2022
answer
7
Tiling with ten-fold symmetry and (unoriented) Penrose tiles?
Dec 19, 2022
answer
7
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
Top network posts
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93
What is the largest volume of a polyhedron whose skeleton has total length 1? Is it the regular triangular prism?
93
$6!\cdot 7!=10!$. Is there a natural bijection between $S_6\times S_7$ and $S_{10}$?
36
Hexagons are best for tiling 2D space in terms of perimeter vs area. What's best for 3D space?
36
Do nonconstructive proofs of isomorphism exist?
34
Is there (or can there be) a general algorithm to solve Rubik's cubes of any dimension?

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