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Mathematics
Meta user
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David Lewis

Apparently, this user prefers to keep an air of mystery about them.

33
answers
7
questions
~233k
people reached
  • Boston, MA, US
  • Member for 8 years, 10 months
  • 325 profile views
  • Last seen Sep 22 '18 at 12:49

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Top posts (40) All Questions Answers | Votes Newest

19 No radical in the denominator — why? [duplicate] Mar 9 '11
19 Eilenberg's rational hierarchy of nonrational automata & languages Feb 2 '12
18 Taking Seats on a Plane Oct 1 '10
13 A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language Jul 27 '10
12 A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language Sep 18 '10
9 Intuitive understanding of the derivatives of $\sin x$ and $\cos x$ Jul 28 '10
8 How to calculate reflected light angle? Aug 8 '10
7 Derivation of the formula for the vertex of a parabola Aug 6 '10
7 Law of cosines with impossible triangles Jul 27 '10
7 Both solutions to a quadratic make sense — looking for applications Mar 14 '11
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