Definition:Differential Equation/Solution/Weak Solution

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A weak solution is a solution of a non-standard formulation of a differential equation.


Distributional Solution

Let $D$ be a differential operator.

Let $T, F \in \map {\DD'} {\R^n}$ be distributions where $F$ is given.

Consider the distributional differential equation:

$D T = F$

Then $T$ is known as the distributional solution.

Viscosity Solution

Weak Solution/Examples/Viscosity Solution

Also see

  • Results about weak solutions can be found here.