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
e = o. Equations (II) now go over into (IV) x — , x, y -jy- CP When k = — is positive, (CLPP) > o and equals -~p~ = ^ P and Pr are on the same side of C, and the center in space is on the same side of nr and n, Fig. 20a. … Fig. 20a.
Geometry, Projective · Geometry, Analytic
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