Reputation
8,466
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
1 10 36
Newest
 Good Answer
Impact
~210k people reached

Aug
16
awarded  Good Answer
Jul
27
comment Calculus of variations of multiple integrals and multiple constrains
It would be helpful if you could post a link/reference to the paper.
Jun
29
comment Simplest way to integrate this expression : $\int_{-\infty}^{+\infty} e^{-x^2/2} dx$
en.wikipedia.org/wiki/Gaussian_integral
Jun
24
comment Example of an $H^{-1}$ function that isn't $L^2$
Incidentally, examples of distributions $f\in H^{-1}\backslash L^2$ can be found here. Not sure how I didn't see that question before.
Jun
24
comment Example of an $H^{-1}$ function that isn't $L^2$
Thanks for the reference. I even had that book open next to me, I was just looking in the wrong chapter.
Jun
24
accepted Example of an $H^{-1}$ function that isn't $L^2$
Jun
24
comment Example of an $H^{-1}$ function that isn't $L^2$
Got it...I guess I've been getting too cozy with $L^2$! Thanks.
Jun
24
revised Example of an $H^{-1}$ function that isn't $L^2$
added 240 characters in body
Jun
24
asked Example of an $H^{-1}$ function that isn't $L^2$
Jun
18
comment Solving higher order pdes
This is probably better suited to physics.stackexchange.
Jun
11
asked Linear evolution PDE: exponential decay to equilibrium
Jun
3
comment Recommendation of multivariable calculus books
Advanced Calculus by Fitzpatrick.
May
24
comment Consistency/range conditions for (integral) transform mapping into higher-dimensional space
I've been thinking about this off and on for a while and it's not at all obvious that one can say anything particularly general, though I could be wrong. The most promising lead I've found is this paper by Hormander on the range of a convolution-type operator (which necessarily maps into a space with the same underlying dimension). I'll post a full answer if I come up with anything more complete.
May
23
answered Unit ball separable $\Longrightarrow$ Space separable
May
23
comment Unit ball separable $\Longrightarrow$ Space separable
Your proof looks good to me.
May
21
comment $\sin(x^2)$ in terms of $\sin(x)$ and $\cos(x)$
This would only work if $x$ were an integer.
May
18
answered Gaining some insight about Picard–Lindelöf theorem.
May
17
comment Proving that $\text{ri rge}\,A=\text{ri conv rge}\,A$
Could you perhaps provide a definition of $\text{rge}(A)$?
May
17
comment Sequence of monotone functions problem
OK mysterious downvote, state your issue...
May
17
answered Sequence of monotone functions problem