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On the Conditions that a given Straight Line may be a Normal to the Quadric Surface

(a, b, c, d, e, f, g, h, u, v, w)(x, y, z, 1)2=0

Published online by Cambridge University Press:  20 January 2009

R. H. Pinkerton
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Let the straight line be denned by the coordinates (α β γ) of a point on it and by its direction cosines l, m, n. It may be referred to as the line (α β γ l, m, n). "Write, for shortness, the equation to the quadric surface in the form F(x, y, z)=0.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 13 , February 1894 , pp. 126 - 128
Copyright
Copyright © Edinburgh Mathematical Society 1894