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Mathematics
Dan Piponi's user avatar
Dan Piponi's user avatar
Dan Piponi's user avatar
Dan Piponi
  • Member for 13 years, 11 months
  • Last seen this week
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About

aka @sigfpe

Did a PhD in theta functions on Riemann surfaces many years ago. Up until recently I wrote software for movie effects, now I work for Google, and in my spare time play with applications of category theory to functional programming.

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Top posts
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70
Where does the word "torsion" in algebra come from?
Feb 11, 2013
55
Please explain the intuition behind the dual problem in optimization.
Jan 16, 2014
46
Why are $3D$ transformation matrices $4 \times 4$ instead of $3 \times 3$?
Jul 21, 2010
22
Category-theoretic description of the real numbers
Jun 19, 2014
21
Applications of the Fibonacci sequence
Jul 21, 2010
19
Why is $x^0 = 1$ except when $x = 0$?
Jul 21, 2010
18
Why doesn't mathematical induction work backwards or with increments other than $1$?
May 28, 2014
14
Simple numerical methods for calculating the digits of $\pi$
Jul 21, 2010
14
What is integration by parts, really?
Jun 11, 2014
13
Why can't we define more elementary functions?
Jun 16, 2014
Top network posts
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231
Computer algebra errors
218
Generate a random point within a circle (uniformly)
163
Your favorite surprising connections in mathematics
93
Papers that debunk common myths in the history of mathematics
91
Relating category theory to programming language theory