A partial differential equation whose solution does not depend continuously on its parameters (including but not limited to boundary conditions) is said to be ill-posed.

# Ill-Posed

## See also

Ill-Defined## Explore with Wolfram|Alpha

## Cite this as:

Weisstein, Eric W. "Ill-Posed." From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/Ill-Posed.html