[SciPy-user] Green's function
Thu Dec 13 11:49:39 CST 2007
Try wikapedia: http://en.wikipedia.org/wiki/Greens_function
On Dec 11, 2007 8:52 AM, Lou Pecora <firstname.lastname@example.org> wrote:
> There is no particular special function called the
> Green Function (sometimes named Green's Function).
> Green functions are special solutions of certain
> partial differential equations (PDE), i.e. they are a
> certain class of functions. It's like saying
> Orthogonal Polynomials -- that's a class, not a
> particular type.
> Green functions have the property that when used in
> the PDE they yield a Dirac delta function. That makes
> them useful for the solution of the same PDE, but with
> a nonhomogeneous term added to the "other side."
> So each PDE has it's own Green function. Eg. the
> Helmholtz equation,
> D^2 G + k^2 G=0 (D^2 = Laplacian)
> has the Green function G(r,r')= i H_0(k|r'-r|)/4,
> where H_0 is a Hankel function and i=sqrt(-1).
> I suggest you look at some texts (maybe mathematical
> physics books) for the subject. Even a Google search
> will give you some information.
> -- Lou Pecora
> --- Natali Melgarejo Diaz <email@example.com>
> > Hi to everyone i'm new in this list...i have a
> > question about a
> > formula i haven't found yet..., do you know the
> > "Green function"??. Is
> > there anything similar in Scipy??, 'cause in Matllab
> > there is one but
> > i haven't found it in Scipy yet.
> > Thanks in advance to everyone ;))
> > ********Natali********
> Never miss a thing. Make Yahoo your home page.
> SciPy-user mailing list
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