In systems analysis, Diakoptics or the "Method of Tearing" involves breaking a (usually physical) problem down into subproblems which can be solved independently before being joined back together to obtain an exact solution to the whole problem. The term was introduced by Gabriel Kron in a series "Diakoptics — The Piecewise Solution of Large-Scale Systems" published in London, England by The Electrical Journal 1957 - 1959.
We know that with the successful development of "Diakoptics" Gabe turned his attention to new and greater challenges, to the comprehension of phenomena of a highly complex nature - multidimensional phenomena. From a philosophical point of view each such phenomenon would be considered complex because each was conceived as constituting a system not only of manifold operations, but of manifold heterogeneous operations. The prototype of this increasingly bold speculation and research was Gabe’s "crystal computer or vest pocket computer," as it was sometimes jokingly referred to, which utilized the simultaneous and heterogeneous activity of a crystal under stimulation of a single electric source. The important steps here seem to have been the perception of an analogy between the optical properties of a crystal under stimulation of a single source of light and the mathematical properties of an electromagnetic field surrounding an electric current, together with the successful use of topology to understand and manipulate them.