VOLTERRA AND PÉRÈS ON FUNCTIONALS Théorie Générale des Fonctionnelles


writings, it must be admitted, are not easy reading and for that reason are not generally known even to this day. In the opinion of the present reviewer, not the least merit of Carathéodory's book on geometrical optics is that it is a comparatively easy means of access to Hamilton's "grand theory," as it was called by P. G. Tait (1831— 1901) in his essay on… (More)