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The Focal and Bi-Tangent Properties of Bi-Circular Quartics

Published online by Cambridge University Press:  20 January 2009

William P. Milne
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The following direct method of attack establishes the fundamental properties of the Foci and Bi-Tangents of a Bi-Circular Quartic very simply, using only the properties of a homographic correspondence. The method was suggested to me by my previous paper on the focal properties of Circular Cubics.

I am indebted to Mr Peter Fraser, University of Bristol, for his criticism.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 29 , February 1910 , pp. 90 - 99
Copyright
Copyright © Edinburgh Mathematical Society 1910