Abstract
AN account of Poincaré's theory of integral invariants with special reference to analytical dynamics is given in the volume under notice. It opens with Hamilton's principle of least action and contains detailed discussions of such questions as differential systems admitting infinitesimal transformations. There are also chapters on the application of Poincaré's theory to the problem of n bodies and to Fermat's principle in optics. Much matter collected here can only be found scattered elsewhere in scientific journals.
Leçons sur les Invariants Intégraux: Cours professé à la Faculté des Sciences de Paris.
Prof.
E.
Cartan
Par. Pp. x + 210. (Paris: A. Hermann et Fils, 1922.) 20 francs.
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Leçons sur les Invariants Intégraux: Cours professé à la Faculté des Sciences de Paris. Nature 111, 217 (1923). https://doi.org/10.1038/111217d0
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DOI: https://doi.org/10.1038/111217d0