Stratton-Chu Type Integrals

As indicated earlier, the body of three-dimensional Cauchy integral analogs developed in the previous part permits the extension of many ideas and methods established in the theory of functions of a complex variable to three-dimensional situations important in the study of geopotential fields. It seems tempting to apply these methods to other geophysical fields, particularly to the electromagnetic field. A natural extension of the concept of the Cauchy-type integral to the electromagnetic field theory involves, as will be shown later, the Stratton-Chu type integrals introduced on the basis of the known integral formulas of Stratton-Chu (Stratton 1941).