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Richard Dore
  • Member for 12 years, 10 months
  • Last seen more than a month ago
213 votes
4 answers
13k views

Is $\mathbb R^3$ the square of some topological space?

124 votes
67 answers
45k views

Math puzzles for dinner [closed]

44 votes
6 answers
8k views

"A gentleman never chooses a basis."

32 votes
5 answers
2k views

Nonconvex manhole covers

18 votes
2 answers
1k views

Homomorphism more than 3/4 the inverse

14 votes
3 answers
2k views

Complete theory with exactly n countable models?

8 votes
1 answer
624 views

Controlling Ultrapowers

5 votes
4 answers
1k views

Coloring Points in the Plane