April 17, 2016
5:15 p.m.
Hi, Sun, 17 Apr 2016 20:10:19 +0300, Boris Faleichik kirjoitti:
my question is addressed to the authors of https://github.com/scipy/scipy/blob/master/scipy/optimize/nonlin.py.
I am looking for more detailed description of the nonlinear integro-differential equation which is a test problem for Newton-Krylov iteration in the documentation:
\nabla^2 P = 10 \left(\int_0^1\int_0^1\cosh(P)\,dx\,dy\right)^2
This is just some random equation. There's no physical or otherwise background for it. -- Pauli Virtanen