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1742
bio website affinemess.com
location Los Altos, CA
age 44
visits member for 4 years, 6 months
seen Apr 18 at 15:31
Math Circler, ex-Googler and Dad. Now at Facebook.

May
25
awarded  Nice Answer
May
15
awarded  Nice Answer
May
14
comment If Erdős is published as Erdös in a paper, which do I cite?
Is there a badge for "first answer to make someone laugh out loud"?
May
8
revised Lower bounds on zeta(s+it) for fixed s
More specific title
May
1
revised Frobenius number for three numbers
added 12 characters in body; added 4 characters in body
Apr
29
revised Are there infinitely many equivalence classes of similar matrices?
added 1 characters in body
Apr
21
comment Connectedness of random distance graph on integers
True. My mistake.
Apr
21
revised Connectedness of random distance graph on integers
added 160 characters in body; deleted 156 characters in body; added 97 characters in body
Apr
21
answered Connectedness of random distance graph on integers
Apr
21
comment Enumeration of Regular Graphs
I don't think there's any closed form formula, but you can compare your results with the data in OEIS, such as here: oeis.org/A005638 (for 3-regular graphs) or here: oeis.org/A051031. This is indexed by the number of vertices, not edges, but of course for fixed k this is the same up to a factor of k/2.
Apr
5
comment What's the name of this 2D cellular automaton?
Sounds familiar but I can't quite place it off the top of my head. Places to look would be the chapters on cellular automata in Gale's "Tracking the automatic ant", and of course Gardner's books and perhaps Hofstadter's collections from Sci Am.
Mar
22
revised Open source mathematical software.
minor typo
Mar
22
answered Open source mathematical software.
Mar
19
revised What are the worst notations, in your opinion ?
added 24 characters in body
Mar
19
comment What are the worst notations, in your opinion ?
@Qiaochu: I'm really only talking about the interior case. It's then that the \osum is the same subspace as the sum but with the implied additional condition on the subspaces.
Mar
19
comment how slow can the dimension of a product set grow?
So the circle S^1 has dimension 2 in your sense? If so, I don't know if this has a name but I certainly wouldn't recommend "dimension".
Mar
19
comment What are the worst notations, in your opinion ?
@Francois: Sheesh, of course. Sorry. Fixed.
Mar
19
revised What are the worst notations, in your opinion ?
deleted 4 characters in body; added 11 characters in body
Mar
18
answered What are the worst notations, in your opinion ?
Mar
17
comment Fundamental groups of noncompact surfaces
If I had been faster I would have proposed the same reference so you wouldn't have had to advertise your own book. I'm a fan :-)