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Note on the extension to higher space of a theorem of Wallace

Published online by Cambridge University Press:  24 October 2008

J. P. Gabbatt
Affiliation:
Peterhouse

Extract

The theorem is attributed to Wallace that, in a euclidean plane, the circumcircles of the triangles determined by four lines, of general position, meet at a point. It is further known that, in euclidean space of n dimensions, the circumhyperspheres of the simplices determined by n + 2 flats, of general position, meet at a point, if and only if n be even.

Type
Articles
Copyright
Copyright © Cambridge Philosophical Society 1926

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References

* Scoticus’, Leybourn's Math. Repos., N.S., 1 (1806), 170;Google Scholarsee Mackay, , Proc. Edin. Math. Soc. 9 (1891), 87.Google Scholar

Grace, , Trans. Camb. Phil. Soc., 16 (1898), 153190 (163);Google ScholarKühne, , Crelle, 119 (1898), 186195Google Scholar (corrected by Baker, H. F., Proc. Camb. Phil. Soc., 22 (1924), 2833);CrossRefGoogle ScholarHaskell, , Arch. d. Math. u. Phys. (3), 5 (1903), 278281.Google Scholar

For two dimensions, Miquel, , Liouville, 3 (1838), 485487;Google Scholar for three dimensions, Roberts, S., Proc. Lond. Math. Soc., 12 (1881), 102, 117–120Google Scholar, ibid. 25 (1894), 306–314; for four dimensions, Grace, , loc. cit., (168);Google Scholar for n dimensions, Haskell, , oc. cit.Google Scholar, Meyer, W. F., Arch. d. Math. u. Phys. (3), 5 (1903), 282287.Google Scholar

§ See e.g. Scott, and Mathewes, , Theory of Determinants, ed. 2, Cambridge (1904), 9296.Google Scholar