Convexity on unions of sets

Gerard Sierksma

Compositio Mathematica (1980)

  • Volume: 42, Issue: 3, page 391-400
  • ISSN: 0010-437X

How to cite


Sierksma, Gerard. "Convexity on unions of sets." Compositio Mathematica 42.3 (1980): 391-400. <>.

author = {Sierksma, Gerard},
journal = {Compositio Mathematica},
keywords = {convexity on unions of sets; abstract convexity space},
language = {eng},
number = {3},
pages = {391-400},
publisher = {Sijthoff et Noordhoff International Publishers},
title = {Convexity on unions of sets},
url = {},
volume = {42},
year = {1980},

AU - Sierksma, Gerard
TI - Convexity on unions of sets
JO - Compositio Mathematica
PY - 1980
PB - Sijthoff et Noordhoff International Publishers
VL - 42
IS - 3
SP - 391
EP - 400
LA - eng
KW - convexity on unions of sets; abstract convexity space
UR -
ER -


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  7. [7] F.W. Levi: On Helly's Theorem and the Axioms of Convexity. J. Indian Math. Soc.15 (1951) 65-76. Zbl0044.19101MR43487
  8. [8] G. Sierksma: Carathéodory and Helly numbers of Convex Product Structures. Pacific J. of Math.61 (1975) 275-282. Zbl0301.52002MR397562
  9. [9] G. Sierksma: Axiomatic Convexity Theory and the Convex Product Space. Doct. Diss., Univ. of Groningen, 1976. Zbl0336.52001
  10. [10] G. Sierksma: Relationships between Carathéodory, Helly, Radon and Exchange numbers of Convexity Spaces. Nieuw Arch. voor Wisk. (3), XXV (1977) 115-132. Zbl0354.52005MR514026

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