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  • 0 posts edited
  • 0 helpful flags
  • 13 votes cast
Nov
12
accepted Does this common PDE have a name?
Nov
11
revised Does this common PDE have a name?
added 18 characters in body
Nov
11
answered Does this common PDE have a name?
Nov
10
comment Does this common PDE have a name?
I edited the equation to make my issue clearer.
Nov
10
revised Does this common PDE have a name?
added 520 characters in body
Nov
10
comment Does this common PDE have a name?
My concern is the following: the Helmoltz equation does admit a solution with products of trigonometric functions and corresponding bessel J functions. The one I wrote, with a minus instead of a plus, does not admit such solutions. Infact admits exponential solutions, because of its structure. Therefore, I cannot see how they are the same thing.
Nov
10
accepted Logarithmic expansion with cosines
Nov
9
comment Does this common PDE have a name?
I can't find it in this form though, could you help me with that please? Thanks!
Nov
9
comment Does this common PDE have a name?
Doesnt' Helmoltz equation have a plus in front of $u$?
Nov
9
asked Does this common PDE have a name?
Nov
9
comment Logarithmic expansion with cosines
Thanks! But what happens to the first term of the r.h.s.?
Nov
8
asked Logarithmic expansion with cosines
Sep
14
comment Line integral of conservative field in polar coordinates
This does not answer the question, since this seems in agreement with the first derivation, isn't it?
Sep
14
revised Line integral of conservative field in polar coordinates
added 2 characters in body
Sep
14
comment Line integral of conservative field in polar coordinates
Although...math.stackexchange.com/questions/696637/…
Sep
14
revised Line integral of conservative field in polar coordinates
added 40 characters in body
Sep
14
asked Line integral of conservative field in polar coordinates
Jul
8
comment 2D Poisson equation and Bessel Functions
Thanks a lot, do you think it does make sense though to use Hankel Transform, or should I expand in Fourier as usual and express $J_2$ that way? Would this work as well?
Jul
7
asked 2D Poisson equation and Bessel Functions
Jun
15
comment Simple Laplace equation with peculiar boundary condition
Won't the fact that I am neglecting the terms with $k<0$ in the Fourier series of $\cos(\theta/2)$ give the wrong result?