A discretisation class for the zero dimensional mesh
mesh – Contains all the submeshes for discretisation
In 0D, the boundary value is the identity operator.
Calculates the zero-dimensional indefinite integral. If ‘direction’ is forward, this is the identity operator. If ‘direction’ is backward, this is the negation operator.
Calculates the zero-dimensional integral, i.e. the identity operator
Calculates the mass matrix for a spatial method. Since the spatial method is zero dimensional, this is simply the number 1.