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Published 1965 | Published
Journal Article Open

A theorem on harmonic homologies

Marsden, J. E.

Abstract

A collineation is a one-one mapping of a projective plane onto itself, taking points into points, lines into lines and preserving incidence. ([1], p.247). A perspective collineation (sometimes called a central collineation) is a collineation which leaves invariant all points on a line h called the axis, and all lines through a point H called the centre. The perspective collineation is an elation if H is incident with h; otherwise it is a homology.

Additional Information

© 1965, CMB. Mr. Marsden is an undergraduate at the University of Toronto. (Editor). University of Toronto. E-Published: 1965-01-01

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August 19, 2023
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