Theory of Functionals and of Integral and Integro-Differential Equations

Description

A general theory of the functions depending on a continuous set of values of another function, this volume is based on the author's fundamental notion of the transition from a finite number of variables to a continually infinite number. Deals primarily with integral equations, and also addresses the calculus of variations. 1930 edition.

Volterra & Duhem corresponded. Volterra also worked for Enrico Betti, the Italian mathematican with whom Duhem was also familiar.