aorq

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Is there an associative metric on the non-negative reals?

feb 26 10 at 2:18 t3suji 2,717●1●8●13

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Complexity of testing integer square-freeness

feb 23 10 at 23:49 Harrison Brown 7,851●1●28●77

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What’s a reasonable category that is not locally small?

dec 18 09 at 16:23 David Speyer 55.3k●3●102●236

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Answers
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119
Which popular games are the most mathematical? (4)
52
Proofs without words
35
Do good math jokes exist?
33
A single paper everyone should read?
28
Theorems that are ‘obvious’ but hard to prove
21
Random knot on six vertices
21
How hard is it to compute the Euler totient function?
18
Is there an image for you that epitomizes mathematics?
18
Which journals publish expository work?
17
Magic trick based on deep mathematics
16
The Angel Problem - was the bet paid?
14
Is the set of primes “translation-finite”?
11
Is every matching of the hypercube graph extensible to a Hamiltonian cycle
9
Help with a double sum, please
7
Examples of common false beliefs in mathematics.
6
Are there analogues of Desargues and Pappus for block designs?
5
Mathematical symbols, their pronunciations, and what they denote: Does a comprehensive ordered list exist?
5
Variation on a matrix game
4
What is the first interesting theorem in (insert subject here)?
3
Determining the space complexity of van Emde Boas trees
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Upper bounds on FFT complexity for arbitrary radixes
2
Examples of well-displayed mathematics on the internet
2
Digraph intermediate connectivity
2
What is the name of this measure of matrix “degenerateness”

 

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