Mathematics
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David Lewis's user avatar
David Lewis's user avatar
David Lewis
  • Member for 13 years, 4 months
  • Last seen more than a month ago
  • Boston, MA, US
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All Questions Answers
Score Newest
answer
31
Taking Seats on a Plane
Oct 1, 2010
question
23
Why eliminate radicals in the denominator? [rationalizing the denominator] [duplicate]
Mar 9, 2011
question
20
Eilenberg's rational hierarchy of nonrational automata & languages
Feb 2, 2012
answer
14
A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language
Jul 27, 2010
answer
13
A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language
Sep 18, 2010
answer
10
Intuitive understanding of the derivatives of $\sin x$ and $\cos x$
Jul 28, 2010
answer
9
Derivation of the formula for the vertex of a parabola
Aug 6, 2010
answer
9
How to calculate reflected light angle?
Aug 8, 2010
question
8
Law of cosines with impossible triangles
Jul 27, 2010
question
8
Both solutions to a quadratic make sense -- looking for applications
Mar 14, 2011
Top Meta posts
2
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7
How do you do a $\Rightarrow$ with a slash through it in LaTeX (for "does not imply")
4
Math markup, diagrams, etc. -- pointers please
Top network posts
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32
Eilenberg's rational hierarchy of nonrational automata & languages -- where is it now?
29
Why is a regular language called 'regular'?
27
What is the difference between naturalism and materialism?
17
Relation between simple and regular grammars
15
Are there undecidable properties of non-turing-complete automata?

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