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Barry Cipra's user avatar
Barry Cipra's user avatar
Barry Cipra
  • Member for 12 years, 11 months
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Author of Misteaks, and how to find them before the teacher does (a calculus supplement).

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69
How to write popular mathematics well?
Dec 21, 2011
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33
Gaussian prime spirals
Mar 18, 2012
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27
Is "Notices of the American Mathematical Society" available before 1995?
Nov 13, 2012
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26
What are some examples of ingenious, unexpected constructions?
Mar 12, 2012
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23
History of the high-dimensional volume paradox
Apr 26, 2013
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21
Non-enumerative proof that there are many derangements?
Jan 19, 2012
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21
Sums of Squares
Mar 14, 2013
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17
Billiard dynamics under gravity
Aug 1, 2011
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17
How many sequences of rational squares are there, all of whose differences are also rational squares?
Aug 4, 2011
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17
A "couple" of questions on Gauss's mathematical diary
Jan 26, 2012
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Why does L'Hopital's rule fail in calculating $\lim_{x \to \infty} \frac{x}{x+\sin(x)}$?
112
How do people perform mental arithmetic for complicated expressions?
103
Hanging a picture on the wall using two nails in such a way that removing any nail makes the picture fall down
89
Identification of a quadrilateral as a trapezoid, rectangle, or square
69
Is there a "positive" definition for irrational numbers?