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On the Discriminant x'Ax.y'Ay-(x'Ay)2
Published online by Cambridge University Press: 20 November 2018
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Let x, y be column matrices of n real homogeneous coordinates xj, yj (j = 1,..., n) representing points in (n - 1) - dimensional real projective space Pn - 1. Let A be an n × n real symmetric matrix. The equation x' Ax = 0 represents a quadric in Pn - 1 and the equation
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- Copyright © Canadian Mathematical Society 1958
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