Abstract
THE new edition of this valuable work differs so widely from the older ones, with many changes and additions, and more than twice the original number of examples, that it is almost a new book. Noteworthy features are the treatment of inversion, the circle of curvature, three-point and four-point contact, the harmonic envelope and locus of two conies, the plane cubic and quartic, and the focus-directrix property of the sphero-conic. The three-dimensional portions include homographic spaces, inpolar and out-polar quadrics, analogues of the complete quadrilateral and quadrangle, and the curvature of quadrics and twisted curves.
An Introduction to Projective Geometry
By Prof. L. N. G. Filon. Fourth edition. Pp. xviii + 407. (London: Edward Arnold and Co., 1935.) 16s. net.
Article PDF
Rights and permissions
About this article
Cite this article
An Introduction to Projective Geometry. Nature 137, 297 (1936). https://doi.org/10.1038/137297d0
Issue Date:
DOI: https://doi.org/10.1038/137297d0