1.1. Introduction. Differential homological algebra extends the classical machinery of homological algebra to differential algebras and modules. As first introduced by Eilenberg and Moore [5], the… (More)

Perturbation theory is a particularly useful way to obtain relatively small differential complexes representing a given chain homotopy type. An important part of the theory is " the basic… (More)

We used computer aided symbolic computation in our previous papers[1,2] to explore solutions of partial differential equations in a way that involves a synergistic application of symbolic and numeric… (More)