Summary: to the CERES method , the system also performs skolemization (according to Andrew's method ) on the input proof. The following figure illustrates the software architecture of CERES: The system CERES expects an LKDe proof of a sequent S and a set of axioms as input, and, after validation of the input proof, computes a proof of sk(S) containing at most atomic-cuts.
Image Dimensions: 3012 x 1545
Image originally found here.