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Published online by Cambridge University Press: 20 January 2009
The transformations discussed in the present paper are, like the isogonal and isotomic transformations, particular cases of the general birational quadratic transformation, in which points correspond to points, and lines to conics passing through three fixed points. They seem to possess some interest in connection with the Geometry of the Triangle.
page 19 note * See Mathesis, VIII., p. 81, and Casey's Conics, p. 448.
page 23 note * E. Lemoine : Notes de Géométrie, Deux modes de génération de quelques points remarquables, Association française, Congrès de Besançon, 1893.
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