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I'm a mathematician currently working in informatics, and at the same time a grad student researching graph theory.

Apr
27
revised Computionally efficient vertex enumeration for (convex) polytopes
add tag [computational-geometry]
Apr
27
suggested approved edit on Computionally efficient vertex enumeration for (convex) polytopes
Apr
27
comment Computionally efficient vertex enumeration for (convex) polytopes
How is the polytope defined? Is it given as an intersection of half-planes? If so, can this problem be transformed to the dual problem of enumerating all the facets of the convex hull if the vertices are given?
Apr
24
comment Minimum number of real multiplications to multiply two quaternions
Also cross-posted to Theoretical Computer Science: cstheory.stackexchange.com/q/31251/8067
Apr
14
answered What is the minimum N for which there exist N points in the plane that cannot be covered by any number of non-overlapping closed unit discs?
Apr
14
comment Open problems in Euclidean geometry?
This has also been asked as a question on our site: mathoverflow.net/q/20558/5340 What is the minimum N for which there exist N points in the plane that cannot be covered by any number of non-overlapping closed unit discs?
Apr
14
answered Open problems in Euclidean geometry?
Apr
13
awarded  Yearling
Apr
13
answered Is every graph an edge-crossing graph?
Mar
21
comment Mathematical habits of thought and action which would be of use to non-mathematicians
So as a mathematician, I should be paid more if I get fatter? See the recent Dilbert strips: dilbert.com/series/63
Mar
19
comment Too old for advanced mathematics?
You may consider asking this question on Mathematics Educators SE (which is a new site that didn't exist yet when you posted this), as matheducators.stackexchange.com/help/on-topic indicates questions about learning mathematics are on-topic there.
Mar
16
comment Time for Langton's ant to cover a “square” torus
In the pictures showing how often the ant appears on a square, could you give a legend for what color means what frequency?
Feb
10
comment Correlation between two continuous-time stochastic processes
This question seems to general. Could you be more specific, like, give the particular processes you're interested in.
Dec
16
comment Question on a proof by Solonnikov,Ladyzhenskaya,Ural'tseva
The question on Mathematics SE is math.stackexchange.com/q/1057985 "Hölder regularity of the simple layer heat potential (question on the proof)" In the future, when you cross-post, please add links from each post to the other.
Nov
3
comment Awfully sophisticated proof for simple facts
See also mathoverflow.net/q/108330/5340
Oct
31
comment Not especially famous, long-open problems which anyone can understand
See also mathoverflow.net/q/184209/5340
Oct
31
comment Schoenberg's Rational Polygon Problem
@AaronMeyerowitz: yes, it is open, mathoverflow.net/a/100449/5340 gives a reference to a paper.
Sep
24
awarded  Autobiographer
Jul
17
comment Do good math jokes exist?
Downvoting because this joke is already in an earlier answer mathoverflow.net/a/3441/5340
Jul
17
comment Do good math jokes exist?
Oh come on! mathoverflow.net/a/2254/5340 already has the Cauchy joke.