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visits member for 3 years, 6 months
seen Mar 22 '11 at 20:26

Jan
20
awarded  Yearling
Jan
20
awarded  Yearling
Jan
20
awarded  Yearling
Apr
15
awarded  Good Answer
Mar
21
answered Continuous transformations of a triangle bound on $S_1$
Mar
10
answered Center-commutator duality
Mar
8
comment Chromatic number and non-simple cycles
@Nick: Not every graph with odd cycles is 3-chromatic. Every graph with odd cycles requires at least 3 colors, but 3 might not be enough. The chromatic number can be arbitrarily large.
Mar
6
comment Graph Problems(Euler,Hamilton,Color)
There is a well-known criterion for when graphs are Eulerian. It should be easy to apply here. For Hamiltonian and 4-coloring, try some examples and you'll figure it out.
Mar
4
comment Expectancy value for the percentage of points lying in the Convex Hull (3D)
I would expect the percentage to go to zero as $n$ grows. (It is sort of like the ratio of surface area to volume.)
Mar
3
awarded  Commentator
Mar
3
comment Elementary proof that $\mathbb{R}^n$ is not homeomorphic to $\mathbb{R}^m$
He meant those spaces minus a point.
Mar
3
awarded  Supporter
Mar
3
answered Multiples of a given irrational number can be arbitrarily close to a natural number
Mar
3
answered Forcing bipartite graphs?
Mar
3
answered On certain cases of Seifert Van Kampen
Mar
2
answered A question regarding the notation/definition of homology group
Feb
28
awarded  Enlightened
Feb
28
comment Is there a set-theoretic definition of Projective Space?
No problem. The more people there are thinking about projective space, the better!
Feb
28
comment Can we make $\tan(x)$ arbitrarily close to an integer when $x\in \mathbb{Z}$?
Let me know when your son is ready to apply for college! :)
Feb
27
awarded  Mortarboard