(1) A Treatise on the Analytic Geometry of Three Dimensions (2) A Course of Pure Mathematics (3) Proceedings of the London Mathematical Society

Abstract

(1) IT cannot have been an easy task to prepare the new edition of Salmon's classical treatise; the result may be considered quite satisfactory, although, no doubt, different readers will form different opinions about the choice of additions that has been made. In this volume, the principal ones are as follows:—First of all, a considerable addition has been made to the section on line-geometry. So far as we can judge, this has been very well done; it includes Ribaucour's theory of isotropic congruences, a good deal about normal congruences, and other interesting matter. Next, and partly connected with the foregoing, we have an account of curvilinear co-ordinates, triply orthogonal systems, and cyclides; also other theorems due to Ribaucour.

(1) A Treatise on the Analytic Geometry of Three Dimensions.

Fifth Edition. Vol. xi. By Dr. G. Salmon. Pp. xvi + 334. (London: Longmans, Green and Co., 1915.) Price 7s. 6d. net.

(2) A Course of Pure Mathematics.

By G. H. Hardy. Second Edition. Pp. xii + 442. (Cambridge: At the University Press, 1914.) Price 12s. net.

(3) Proceedings of the London Mathematical Society.

Second Series. Volume xiii. Pp. liii + 500. (London: Francis Hodgson, 1914.) Price 25s.