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Axioms for convexity

Published online by Cambridge University Press:  17 April 2009

W.A. Coppel
Affiliation:
Department of Theoretical Physics, Institute of Advanced Studies Australian National University, GPO Box 4 Canberra ACT 2601, Australia
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Abstract

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The basic elementary results about convex sets are derived successively from various properties of segments. The complete set of properties is shown to form a natural set of axioms characterising the convex sets in a real vector space.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1993

References

[1]Boltyanskii, V.G., ‘The method of tents in the theory of extremal problems’, Russian Math. Surveys 30 (1975), no.3, 154.CrossRefGoogle Scholar
[2]Boltyanskii, V.G. and Soltan, P.S., ‘Combinatorial geometry and convexity classes’, Russian Math. Surveys 33 (1978), no.1, 145.CrossRefGoogle Scholar
[3]Cohn, P.M., Universal algebra, revised edition (D. Reidel, Dordrecht, 1981).CrossRefGoogle Scholar
[4]Edelman, P.H. and Jamison, R.E., ‘The theory of convex geometries’, Geom. Dedicata 19 (1985), 247270.CrossRefGoogle Scholar
[5]Eggleston, H.G., Convexity (Cambridge University Press, Cambridge, 1958).CrossRefGoogle Scholar
[6]Ellis, J.W., ‘A general set-separation theorem’, Duke Math. J. 19 (1952), 417421.CrossRefGoogle Scholar
[7]Euclid, , The thirteen books of Euclid's elements, English translation by Heath, T.L., second edition (Dover, New York, 1956).Google Scholar
[8]Hammer, R., ‘Konvexitätsraum und affiner Raum’, Abh. Math. Sem. Univ. Hamburg 43 (1975), 105111.CrossRefGoogle Scholar
[9]Hilbert, D., Foundations of geometry, English translation of tenth German edition (Open Court, LaSalle, Illinois, 1971).Google Scholar
[10]Jamison-Waldner, R.E., ‘A perspective on abstract convexity: classifying alignments by varieties’, in Convexity and related combinatorial geometry, (Kay, D.C. and Breen, M., Editors) (M. Dekker, New York, 1982), pp. 113150.Google Scholar
[11]Lassak, M., ‘A general notion of extreme subset’, Compositio Math. 57 (1986), 6172.Google Scholar
[12]Lay, S.R., Convex sets and their applications (John Wiley, New York, 1982).Google Scholar
[13]Martinez-Legaz, J.E. and Singer, I., ‘The structure of hemispaces in R n’, Linear Algebra Appl. 110 (1988), 117179.CrossRefGoogle Scholar
[14]Monna, A.F., Analyse Non-archimédienne (Springer-Verlag, Berlin, Heidelberg, New York, 1970).CrossRefGoogle Scholar
[15]Prenowitz, W. and Jantosciak, J., Join geometries (Springer-Verlag, Berlin, Heidelberg, New York, 1979).CrossRefGoogle Scholar
[16]Sierksma, G., ‘Extending a convexity space to an aligned space’, Nederl. Akad. Wetensch. Indag. Math. 46 (1984), 429435.CrossRefGoogle Scholar
[17]Soltan, V.P., ‘d−convexity in graph’, Soviet Math. Dokl. 28 (1983), 419421.Google Scholar
[18]Vaisman, I., Foundations of three-dimensional Euclidean geometry (M. Dekker, New York, 1980).Google Scholar
[19]Valentine, F.A., Convex sets (McGraw-Hill, New York, 1964).Google Scholar
[20]Whitfield, J.H.M. and Yong, S., ‘A characterization of line spaces’, Canad. Math. Bull. 24 (1981), 273277.CrossRefGoogle Scholar