Completion of two-clique decomposable Gamma matrices

Given a decomposable graph consisting of two cliques and incomplete variogram matrix Gamma, returns the full Gamma matrix implied by the conditional independencies. The rows/columns of Gamma must be ordered such that the clique of size nA (excluding separator) comes first, then the separator of size nC, and then the remaining nB vertices.

Usage

complete_Gamma_one_step(Gamma, nA, nC, nB)