286 reputation
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bio website linkedin.com/pub/…
location San Francisco, CA
age 29
visits member for 2 years, 11 months
seen 12 hours ago

PhD, Chemical Engineering, MIT, 2013.

Pro Tem moderator on SciComp.SE.


Oct
2
comment Expand $f(x) = x$ in a cosines serie
If you use $-l$ to $l$, then because $x$ is an odd function, cosine is an even function, and the product of even and odd functions is odd, the cosine terms in your Fourier series will drop out, leaving you with only sine terms.
Oct
2
answered Prove that the limit, $\displaystyle\lim_{x \to 1^+} \frac{x-3}{3 - x - 2x^2}$, exists.
Sep
25
comment Wave Equation with Constant Boundary Conditions
Welcome to SciComp! This question is a problem that doesn't require techniques in computational science, and it's probably a better fit for Mathematics Stack Exchange.
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?