Mathematics
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Train Heartnet
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All Questions Answers
Score Newest
question
17
Counting the number of polygons in a figure
Dec 3, 2013
question
17
Linear span of the empty set
Sep 24, 2014
question
14
How do I prove that the trace of a matrix to its $k$th power is equal to the sum of its eigenvalues raised to the $k$th power?
Dec 18, 2015
question
13
Proof that there are infinitely many positive rational numbers smaller than any given positive rational number.
Jun 25, 2013
question
12
Is there a one-to-one function from the natural numbers to the primes?
Feb 22, 2015
question
10
Should a ring be closed under multiplication?
Jul 15, 2015
answer
8
What are the odds of cracking a cellphone pattern-lock?
Dec 6, 2012
question
7
Book recommendation for network theory
May 23, 2015
question
7
How to list graphs systematically?
Dec 24, 2013
question
6
Help solving this Diophantine equation
May 21, 2013
Top Meta posts
3
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15
Is it inappropriate to post a "Thank you" as a comment?
6
Where can I see a timeline of updates made to the site?
4
Is it possible to award a bounty on an answer which was given before the bounty was placed?
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34
In what order does the shell execute commands and stream redirection?
25
Why are Nexus devices often described as perfect for developers?
21
How can I remove the unwanted background from a scanned handwritten signature?
19
How do I politely decline a professor who's really keen on having me for a PhD position?
9
Has there been any experimental verification of Jeremy England's theory of dissipation-driven adaptation?

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