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Jan
15
comment Can we simplify $\int_{0}^{\infty}\frac{{\sin}^px}{x^q}dx$?
This purpose of this comment is to make you aware that I see [Math Processing Error]s here.
Jan
14
comment Interpret Fourier transform as limit of Fourier series
If the Fourier transform of f has compact support, then f is not compactly supported (follows from Heisenberg uncertainty principle, or, more nicely from the uncertainty principle by Donoho and Stark). Hence, there are countable many nonzero samples that determine f completely. If bandlimited functions could be compactly supported, signal processing would be considerably much easier.
Jan
14
comment Interpret Fourier transform as limit of Fourier series
Interpreting Fourier inversion as a limit is not only interpreting but is the right way to see Fourier inversion in $L^2$. One defines the Fourier transform by extending it from Schwartz space (or $L^1\cap L^2$) to $L^2$ and similar for the inverse. To be concrete one can use the limit $\lim_{T\to\infty} \int_{-T}^T \hat f(\xi) \exp(i x\xi) d\xi$…
Jan
7
reviewed Approve Has anyone studied a transport equation of this form?
Jan
7
comment How to cite authors from any country correctly?
@FedericoPoloni That's well said. In view of the answers and the comments a migration, this thread would probably appear a bit odd at academia.sx. I retracted my close vote…
Jan
6
comment How to cite authors from any country correctly?
As suspected: ResearchGate and Google Scholar also have the wrong name while MathSciNet has this correct…
Jan
6
comment How to cite authors from any country correctly?
@FedericoPoloni Wow, this is great! I emailed TandfF about this and let's see if they are as dedicated as MathSciNet…
Jan
6
revised Question abouth Skorokhod representation of random variables
Shifted introduction of $\rho$ to the front to enable easier parsing
Jan
5
comment How to cite authors from any country correctly?
@yemonchoi May mathematicians are sometimes not that different...
Jan
5
comment How to cite authors from any country correctly?
For Stanley J. Osher your MathSciNet and Google do not agree for me (let alone that googling is itself subjective): MathSciNet suggests "Stanley J. Osher" while "S. Osher" produces most Google hits for me ("Stanley Osher" is second place and "S. J. Osher" is third place). Another nice try is "Jeffrey C. Lagarias"…
Jan
5
comment How to cite authors from any country correctly?
Thing is that "best known" is subjective… Or do you mean "best known to yourself"? An example from outside academia: Is is T.C. Boyle, T. Coraghessan Boyle or Tom Coraghessan Boyle?
Jan
5
comment How to cite authors from any country correctly?
As a frequent user of academia.sx I am not aware of different cultures regarding names in different fields of science (as long as the order in not concerned!), hence my vote to migrate.
Jan
5
comment How to cite authors from any country correctly?
Relevant thread: academia.stackexchange.com/questions/10926/…
Jan
5
comment How to cite authors from any country correctly?
I'm voting to close this question as off-topic because it belongs to academia.stackexchange.com.
Jan
5
comment How to cite authors from any country correctly?
I think only the last sentence gives the correct approach (unless you are D. Knuth).
Jan
4
comment On convergence of convex bodies
Wlog you can assume that $K$ lies in the upper half plane. Isn't it clear that $\partial K\cap \epsilon S^{n-1}$ is the graph of a convex function for $\epsilon$ small enough, and doesn't this imply that you can contract along radial lines?
Jan
3
reviewed Leave Open Is the limsup or liminf of n-wise independent events independent?
Jan
3
comment Projecting on a a special polyhedron
As far as I remember, projecting onto polyhedra is in general a hard problem (probably as hard as a generic second order cone program?). That your polyhedron is symmetric about the origin is in fact its only special property, i.e. all symmetric polyhedra are of this form.
Dec
8
comment Geometry of Hermitian rank $\leq r$ matrices
Wouldn't then $V$ be contained in $F$?
Dec
3
comment efficient rank-two updates of an eigenvalue decomposition (or more genearlly SVD)
Clever! I like this answer even better.