276 reputation
15
bio website linkedin.com/pub/…
location San Francisco, CA
age 29
visits member for 2 years, 7 months
seen Jul 24 at 18:23

PhD, Chemical Engineering, MIT, 2013.

Pro Tem moderator on SciComp.SE.


Feb
24
comment The space spanned by the rows of the Kernel matrix.
This question has been cross-posted on Computational Science Stack Exchange. See scicomp.stackexchange.com/q/10860/276.
Feb
13
answered What is the practical impact of a matrix's condition number?
Dec
29
awarded  Autobiographer
Dec
4
comment Transform derivative term of 2nd order
Yes, this question probably should be migrated to Math.SE (if they want it).
Feb
19
awarded  Yearling
Feb
15
answered Convexity of a function
Apr
18
awarded  Commentator
Apr
18
comment How many significant figures are needed in base 2?
@Must: I don't know yet. Let me consult with the math mods.
Apr
18
comment How many significant figures are needed in base 2?
Question is very close to a cross-post on scicomp.SE.
Apr
4
awarded  Citizen Patrol
Apr
4
comment Contiguous prime numbers with MPI (Want more ideas for an efficient algorithm)
Math.SE mods: Cross post on scicomp.SE.
Apr
1
comment Contiguous prime numbers with MPI (Want more ideas for an efficient algorithm)
scicomp.SE would also gladly take your question; we take lots of questions on MPI, and on the practical implementation of parallel algorithms. (I'm a mod on scicomp.SE.)
Feb
10
comment Rapid approximation of $\tanh(x)$
I thought about that algorithm, too, until I saw the "no table lookup" part.
Feb
9
comment Matrix-Square Root
I thought about the polar decomposition method, too, when I looked at the problem, but then I thought about calculating it, looked it up, and came to a similar conclusion as J.M..
Feb
8
comment Applied ODEs in trajectory problem
Just to clarify, does $v$ have constant magnitude in the problem statement, or does $u + v$ have constant magnitude? If $u + v$ has constant magnitude, then I would expect both the magnitude and direction of $v$ to vary with the position of the boat, because $u$ is a constant vector.
Feb
7
answered Matrix-Square Root
Feb
7
answered How to show a matrix is full rank?
Feb
6
comment Find roots of sum of sinusoids
Just out of curiosity: if this equation describes the motion of a point and a line, is there any way that you could set it up differently, as a system of ODEs, where the collision event is described by the root of an equation? There are event detection algorithms for numerical integrators that work well in such circumstances.
Feb
6
awarded  Teacher
Feb
6
answered How to show a primal program is unbounded by using weak duality?