On M. Kac's probabilistic formula for the solution of the telegraphist's equation
Sur les familles compactes de fonctions mesurables
Convergence du type L
Sur la convergence des approximations successives pour l’équation
A remark on continuity of one-parameter semi-groups of operators
A proof of the Trotter-Kato theorem on approximation of semi-groups
Sur les équations hyperboliques avec petit paramètre
Remark on strongly additive set functions
Sur les opérateurs de Green des problèmes de Cauchy abstraits
On cosine operator functions and one-parameter groups of operators
On operator valued solutions of d'Alembert's functional equation, II
On uniform symmetrization of analytic matrix functions
On the generation of tight measures
On operator-valued solutions of d'Alembert's functional equation, I
On second order hyperbolic equation with two independent variables
Comparison of solutions and successive approximations in the theory of the equation
CONTENTSIntroduction........................................................................................................................................................................................................... 5I. THE CAUCHY-DARBOUX PROBLEM IN FUNCTION CLASSES AND ......................... 71. Basic function classes ......................................................................................................................................................................................
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