The General Problem Solver (GPS) is a computer program which has been used for explorations into both general mechanisms involved in problem solving and the way that humans solve problems. The program has existed in several versions since its conception in 1957. This report describes attempts to generalize one version, GPS-2-5; i.e., to have it solve many different kinds of problems. GPS's perf...

abstract We study a generality of an inflationary scenario by integrating the Einstein equations numerically in a plane-symmetric spacetime. We consider the inhomogeneous spacetimes due to (i) localized gravitational waves with a positive cosmological constant Λ, and (ii) an inhomogeneous inflaton field Φ with a potential 1 2 m 2 Φ 2. For the case (i), we find that any initial inhomogeneities a...