An introduction to projective geometry and its applications; an analytic and synthetic treatment (1905)
Emch, Arnold, b. 1871 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 65
—a=o and d=o, e=o. Equations (II) now go over into (IV) y=jy. CP When ^ = - is positive, {CLPP) > o and equals ^:^ = k. P and P are on the same side of C, and the center in space is onthe same side of tt and n, Fig. 20a. … Fig. 20a.
Geometry, Projective · Geometry, Analytic
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