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yberman

I love combinatorics and algorithms.

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  • New York, NY, USA
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  • Member for 7 years, 6 months
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  • Last seen Feb 22 at 0:21

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25 There exists a regular language A such that for all languages B, A ∩ B is regular. Jul 16 '16
10 An example of a problem which is difficult but is made easier when a diagram is drawn Jan 13 '15
10 How are large prime numbers found? Apr 17 '17
6 Expository Books for Galois Theory Aug 3 '17
6 Topology with only countable unions Oct 22 '17
5 Invert a $2\times 2$ Matrix containing trig functions Jan 20 '15
5 What is the Möbius Function for graphs? Feb 3 '15
4 Finding short vectors in $\mbox{GF}(2)$ May 16 '19
4 Bijection from $[0,1]^3$ to $[0,1]$? May 8 '17
4 How does my calculator calculate the roots for a cubic polynomial? Jun 17 '17
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