harmonic conjugates

harmonic conjugates
two points whose cross ratio with two specified points equals -1.

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Universalium. 2010.

См. также в других словарях:

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  • Projective harmonic conjugates — is defined by the following harmonic construction::“Given three collinear points A, B, C, let L be a point not lying on their join and let any line through C met LA, LB at M, N respectively. If AN and BM met at K , and LK meets AB at D , then D… …   Wikipedia

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  • harmonic row — noun or harmonic range : a set of four collinear points compare harmonic conjugates …   Useful english dictionary

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