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Top Questions
15
votes
How do I prove that $\cos{\frac{2\pi}{7}}\notin\mathbb{Q}$?
trigonometry
asked Oct 11 '11 at 12:27
math.stackexchange.com
14
votes
Is the set of real numbers the largest possible totally ordered set?
real-analysis
order-theory
asked Dec 10 '12 at 4:13
math.stackexchange.com
14
votes
How do I emphasize a word using the standard punctuation system?
punctuation
writing
asked Mar 8 '11 at 13:21
english.stackexchange.com
13
votes
Is there any subtle difference between “to study” and “to learn”?
word-choice
verbs
asked Apr 5 '11 at 11:27
english.stackexchange.com
12
votes
Can $2^n$ and $2^{n+1}$ have the same digit sum?
number-theory
asked Oct 12 '11 at 3:19
math.stackexchange.com
12
votes
A matrix is diagonalizable, so what?
matrices
asked Sep 10 '12 at 5:09
math.stackexchange.com
12
votes
Why did they spell it “URL’s”?
grammatical-number
orthography
apostrophe
acronyms
asked Mar 19 '11 at 13:51
english.stackexchange.com
11
votes
Online tools to look up words from pronunciation
pronunciation
dictionaries
resources
asked Jun 5 '11 at 10:45
english.stackexchange.com
11
votes
Find an algorithm to win this battle against crime!
algorithm
graph
asked Oct 13 '11 at 5:51
stackoverflow.com
10
votes
What is the largest determinant you can get by filling in 0,1 or 2 into a 4-by-4 matrix?
matrices
asked Sep 4 '12 at 21:47
math.stackexchange.com
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Top Answers
14
Why is “happyness” spelled with a Y in the movie title “The Pursuit of Happyness”?
english.stackexchange.com
9
What is the largest determinant you can get by filling in 0,1 or 2 into a 4-by-4 matrix?
math.stackexchange.com
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