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James Propp
  • Member for 12 years, 3 months
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51 votes
12 answers
26k views

Is pi a good random number generator?

49 votes
3 answers
10k views

What is the difference between holonomy and monodromy?

43 votes
0 answers
820 views

Extending a line-arrangement so that the bounded components of its complement are triangles

33 votes
4 answers
3k views

In what rigorous sense are Sperner's Lemma and the Brouwer Fixed Point Theorem equivalent?

32 votes
5 answers
10k views

Differentiable functions with discontinuous derivatives

31 votes
1 answer
1k views

solving linear equations made difficult

31 votes
5 answers
5k views

Where do surreal numbers come from and what do they mean?

27 votes
5 answers
2k views

Moments of area of random triangle inscribed in a circle

27 votes
8 answers
1k views

Area-differences for lattice triangles in a checkerboard

26 votes
3 answers
4k views

Surreal numbers vs. non-standard analysis

24 votes
3 answers
847 views

an operation on binary strings

24 votes
14 answers
4k views

What are some examples of "chimeras" in mathematics?

24 votes
2 answers
925 views

Exponential towers of $i$'s

23 votes
5 answers
1k views

Illustrating mathematics with wysiwyg tools

23 votes
4 answers
1k views

Dividing by two in the category of vector spaces

19 votes
2 answers
2k views

How bogus is the glitzy proof of Borsuk-Ulam?

19 votes
2 answers
676 views

Do all subtraction-free identities tropicalize?

19 votes
3 answers
701 views

In what ways is the standard Fourier basis optimal?

19 votes
3 answers
1k views

functions from Q to itself with derivative zero

19 votes
1 answer
577 views

How hard is it to tell when a finite set tiles the integers?

18 votes
2 answers
3k views

Propositions equivalent to the completeness of the real numbers

18 votes
2 answers
1k views

Nice sign-expansions of special surreal numbers

16 votes
2 answers
664 views

Comparing sizes of sets of natural numbers

16 votes
0 answers
1k views

Characterizing the surcomplex numbers

16 votes
2 answers
973 views

Formula for volume of $n$-ball for negative $n$

15 votes
2 answers
1k views

self-avoidance time of random walk

15 votes
5 answers
1k views

enumerative meaning of natural q-Catalan numbers

15 votes
2 answers
1k views

the use of parentheses to mean "I won't tell you this again"

15 votes
1 answer
420 views

Nonperiodic points of homeomorphisms of a ball

14 votes
1 answer
630 views

Is the Ford disk packing optimal?

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