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yberman

I love combinatorics and algorithms.

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  • New York, NY, USA
  • yberman.com
  • Member for 6 years, 3 months
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  • Last seen Dec 6 at 1:43

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Top posts (67) All Questions Answers | Votes Newest

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
9 How are large prime numbers found? Apr 17 '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
5 Expository Books for Galois Theory Aug 3 '17
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
4 Are injective functions necessarily defined on their entire domain? Jun 26 '17
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