Hostname: page-component-77c89778f8-vsgnj Total loading time: 0 Render date: 2024-07-16T10:32:23.495Z Has data issue: false hasContentIssue false

Half-Turns and Infinite Chains of Clifford Configurations

Published online by Cambridge University Press:  20 November 2018

J. F. Rigby*
Affiliation:
University College, Cardiff, Wales
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

In a recent paper [7] Longuet-Higgins and Parry prove that, given a general Clifford configuration of degree 5 (abbreviated to CL5), C0 say, there exist points P and Q such that the inverses of P in the circles of C0 form the points of another CL5C1, whilst the inverses of Q in the circles of C1 are the points of C0; also the inverses of Q in the circles of C0 form the points of a CL5 C–1, whilst the inverses of P in the circles of C–1 are the points of C0. This leads to an infinite chain …, C–2, C–1, C0, C1, C2, … of CL5s, each connected to the next by means of the same two points P and Q, called the poles of the chain.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1982

References

References>

1. Aiyar, K. R., On some properties of the Durairajan point of a quadrangle, J. Indian Math. Soc. (N.S.) 26 (1962), 5761.Google Scholar
2. Babbage, D. W., A chain of theorems for circles, Bull. London Math. Soc. 1 (1969), 343344.Google Scholar
3. Baker, H. F., An introduction to plane geometry (Cambridge, 1943).Google Scholar
4. Coolidge, J. L., A treatise on the circle and the sphere (Oxford, 1916).Google Scholar
5. Coxeter, H. S. M., The inversive plane and hyperbolic space, Abh. Math. Sem. Univ. Hamburg 29 (1966), 217241.Google Scholar
6. M. S., Longuet-Higgins, Inversive properties of the plane n4ine, and a symmetric figure of 2 #x00D7; 5 points on a quadric, J. London Math. Soc. 12 (1976), 206212.Google Scholar
7. M. S., Longuet-Higgins and Parry, C. F., Inversive properties of the plane n-line, II: an infinite six-fold chain of circle theorems, J. London Math. Soc. 19 (1979), 541560.Google Scholar
8. Rigby, J. F., Half-turns and Clifford configurations in the inversive plane, J. London Math. Soc. 15 (1977), 521533.Google Scholar
9. Wood, P. W., Points isogonally conjugate with respect to a triangle, Math. Gazette 25 (1941), 266272.Google Scholar