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Mathematics
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Mher
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If you're not prepared to be wrong, you'll never come up with anything original.

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question
92
$1=2$ | Continued fraction fallacy
Jun 11, 2013
question
21
Is it always true that $\det(A^2+B^2)\geq0$?
Jul 8, 2013
question
19
Does the series $\sum\frac{a_n}{a_{n+1}}\frac{1}{n}$ always diverge if $0<a_n<1$?
Jun 1, 2014
answer
18
Sylvester rank inequality: $\operatorname{rank} A + \operatorname{rank}B \leq \operatorname{rank} AB + n$
Jul 8, 2013
question
13
What is the maximum possible value of determinant of a matrix whose entries either 0 or 1?
Jun 20, 2013
answer
13
Suppose $\sum{a_n}$ converges. How do I prove that $\sum{\frac{\sqrt{a_n}}{n}}$ converges
Dec 2, 2014
answer
13
Why the differentiation of $e^x$ is $e^x?$
Dec 24, 2014
answer
11
Why the differentiation of $e^x$ is $e^x?$
Dec 24, 2014
question
8
Compute the limit $\lim_{n\to\infty}\frac{1}{\log n}\sum_{k=1}^n\left(1-\frac{1}{n}\right)^k\frac{1}{k}$
Jan 23, 2015
answer
8
How to prove that $\sum_{n=1}^{\infty}\frac{1!+2!+\cdots+n!}{(2n)!}$ converges?
Mar 9, 2014
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Parallelize Map and ParallelMap
8
Plot of continuous function cuts off
8
Job title similarity
7
Solr does not highlight some words
7
Free data of connections between role and skill