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Questions about linear partial differential equations. Often used in combination with the top-level tag ap.analysis-of-pdes.

6 votes
2 answers
2k views

Numerical solution to diffusion-like equation with negative diffusion coefficient region?

I am trying to numerically solve the initial value problem (see later discussion for ICs) $$ x \frac{\partial f}{\partial t} = \frac{\partial}{\partial x} (1-x^2) \frac{\partial f}{\partial x} - f$$ …
vojta havlíček's user avatar