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emailable at "t.mathoverflow@[Google-email-entity]" for any math.SE, MO, or SE-related correspondence.

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40
Why is a circle in a plane surrounded by 6 other circles?
Nov 17 '10
37
Quotient geometries known in popular culture, such as "flat torus = Asteroids video game"
Nov 17 '10
33
If all sets were finite, how could the real numbers be defined?
Aug 9 '10
32
Is there a quick proof as to why the vector space of $\mathbb{R}$ over $\mathbb{Q}$ is infinite-dimensional?
Oct 11 '10
31
Prove that this function is bounded
Aug 3 '10
30
StarCraft II: Ladder math
Oct 27 '10
28
What is the importance of the Collatz conjecture?
Nov 16 '10
27
Proving a known zero of the Riemann Zeta has real part exactly 1/2
Oct 25 '10
23
Proof that Pi is constant (the same for all circles), without using limits
Aug 24 '10
19
Boy Born on a Tuesday - is it just a language trick?
Sep 11 '10
Top Meta posts
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25
Mark all locked questions as [​locked​] or [​closed​] in the title
20
Does a moderator candidate need to divulge the real name?
19
Closure wars are caused by asymmetrical close/reopen voting process.

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