Mathematics
Christopher Carl Heckman's user avatar
Christopher Carl Heckman's user avatar
Christopher Carl Heckman's user avatar
Christopher Carl Heckman
  • Member for 8 years, 4 months
  • Last seen more than 6 years ago
  • Tempe, AZ, United States
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About

I am a footnote in the history of the Four Color Theorem. (I'm in the acknowledgments section of the Robertson-Sanders-Seymour-Thomas re-proof.)

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All Questions Answers
Score Newest
answer
54
Solving a system of equations with 3 variables in under a minute
Mar 23, 2016
answer
25
What is the sum of the reciprocal of all of the factors of a number?
Mar 11, 2016
question
18
When is LIATE simply wrong?
Jan 21, 2016
question
9
Does anyone know a reference to best-fitting lines with integral coefficients?
May 3, 2016
answer
8
Find all integers such that $2 < x < 2014$ and $2015|(x^2-x)$
Aug 17, 2015
answer
8
When do two functions become equal?
Aug 19, 2015
answer
8
Finding the Limit of a Sequence (No L'Hopital's Rule)
Apr 26, 2016
answer
7
Why is surface area not simply $2 \pi \int_{a}^{b} (y) dx$ instead of $2 \pi \int_a^b (y \cdot \sqrt{1 + y'^2}) dx$?
Mar 10, 2016
answer
7
How to show these two graphs are not isomorphic?
Aug 12, 2015
answer
7
Determine all integers $x $ and $ y$ such that $|2^x − 3^y| =1$
Mar 26, 2016
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Why do academics work only nine months of the year?

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