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Steve D's user avatar
Steve D
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answer
91
Can a vector space over an infinite field be a finite union of proper subspaces?
Feb 5, 2010
answer
75
Examples of eventual counterexamples
Feb 16, 2010
answer
61
Quick proofs of hard theorems
May 16, 2010
question
30
No simple groups of order 720?
Oct 13, 2010
question
29
When $2^\alpha = 2^\beta$ implies $\alpha=\beta$ ($\alpha,\beta$ cardinals)
Mar 5, 2010
answer
25
Half or more elements order two implies generalized dihedral?
Sep 26, 2010
answer
23
Can the symmetric groups on sets of different cardinalities be isomorphic?
Jan 30, 2010
answer
21
An identity for the cosine function
Feb 27, 2010
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19
Seeking Noetherian normal domain with vanishing Picard group but not a UFD
May 24, 2010
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17
Hyperbolic manifolds which fiber over the circle
Sep 19, 2013
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54
Who should win at tug of war?
51
What causes a dog to lunge at an unknown child and how should the owner respond?
47
Rotating an image along a Möbius strip?
39
How to introduce my aggressive dog to other canines?
32
"Covering up" text in Graphics