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zerosofthezeta

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144 votes

How to put 9 pigs into 4 pens so that there are an odd number of pigs in each pen?

arithmetic recreational-mathematics asked Nov 7, 2013 at 0:22
math.stackexchange.com

36 votes

What is the motivation for quaternions?

soft-question math-history quaternions asked Aug 28, 2014 at 7:56
math.stackexchange.com

30 votes

Are there any visual proofs for $\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}$?

sequences-and-series visualization asked Nov 29, 2014 at 19:21
math.stackexchange.com

29 votes

How do I find the sha256 hash of text on a Mac?

terminal asked Dec 27, 2017 at 7:47
apple.stackexchange.com

27 votes

Show how to calculate the Riemann zeta function for the first non-trivial zero

complex-numbers riemann-zeta asked Sep 11, 2013 at 7:19
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27 votes

Why is there no explicit formula for the factorial?

elementary-number-theory products asked Jul 29, 2013 at 8:26
math.stackexchange.com

24 votes

What does a "half derivative" mean?

calculus fractional-calculus asked Aug 28, 2013 at 4:29
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22 votes

Can the factorial function be written as a sum?

elementary-number-theory summation factorial asked Jul 25, 2013 at 4:17
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19 votes

What is a great book to read about sequences, sums and products?

sequences-and-series reference-request soft-question book-recommendation asked Sep 2, 2013 at 19:42
math.stackexchange.com

18 votes

What are some good introductory books on mathematical proofs?

reference-request proof-writing soft-question asked Jan 29, 2014 at 3:19
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