Abstract
NO one could be more competent than M. Hadamard to deal with the calculus of variations, and when this work is completed it will be a most valuable exposition of the present state of the subject. It is significant that in the first lines of his preface the author expresses the view that the calculus of variations is only a first chapter of the functional calculus (calcul fonctionnel) of Volterra, Pincherle, &c., and he gives, in fact, a short chapter on this new theory (pp. 281–312). But the analysis, in this volume, is mostly of a more familiar kind.
Leçons sur le Calcul des Variations.
By Prof. J. Hadamard. Tome premier. Pp. viii + 520. (Paris: A. Hermann et Fils, 1910.) Price 18 francs.
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M., G. Leçons sur le Calcul des Variations . Nature 85, 197–198 (1910). https://doi.org/10.1038/085197a0
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DOI: https://doi.org/10.1038/085197a0
