These objects are named for Riemann in the case of a Goursat problem.
These objects are named for Riemann in the case of a Goursat problem. Spuriously regarding terms of a dependent variable as inhomogeneous allows these maps to be used in iterative approximation schemes, as in the Born approximation, because they are the kernels of integral representations of solutions to inhomogeneous problems. Finding the representation of these on complete bases is easy as the completeness theorem for a basis can be used directly to write the inhomogeneous term in their defining equation; that's because operation on one of these by its corresponding operator returns a Dirac delta function. Solving for one of these in general requires the use of identities derived from the divergence theorem that share these functions' namesake. For ten points, name these functions used to solve inhomogeneous boundary-value problems, which are named for a British mathematician.
These objects are named for Riemann in the case of a Goursat problem.
{Green’s} functions