110 reputation
4
bio website jstotero.com
location Rome, Italy
age 27
visits member for 2 years
seen May 4 at 9:55

May
1
asked Distortion in spherical coordinates
Oct
2
comment integration by parts using gradient
@Christopher : I know, but for sake of clarity, enzo has been more explicit, so this is the right answer :) this is a difficult situation :)
Sep
29
comment Minimum value of an integral.
Can't you just work with the sign of the derivative? $\phi$ is >0 on the whole interval, that means its integral is positive...
Sep
29
comment integration by parts using gradient
Yes the surface term is missing in Chistopher's answer, so despite he arrived early, I have to set yours as right :) Grazie Enzo :)
Sep
29
accepted integration by parts using gradient
Sep
29
comment integration by parts using gradient
Thanks, this is exactly what I did to solve this integral, but in the paper is not mentioned at all whether the $u$ are harmonic functions, and that's what drives me nuts :) ... The only information I have is that they are Fourier Transformable, but at this point I must suppose they forced the function either to be harmonic, or to be zero on the surface (this is a physics paper, and they do that very often)...
Sep
29
asked integration by parts using gradient
Sep
29
awarded  Scholar
Sep
29
awarded  Supporter
Sep
29
accepted projection of a function on an orthogonal set
Sep
8
awarded  Student
Sep
1
revised projection of a function on an orthogonal set
added 7 characters in body
Sep
1
comment projection of a function on an orthogonal set
Sorry, I wrote it wrong... the basis is different from the other one :)
Sep
1
awarded  Editor
Sep
1
revised projection of a function on an orthogonal set
added 6 characters in body
Sep
1
asked projection of a function on an orthogonal set