Article PDF
Avoid common mistakes on your manuscript.
Bibliographie
We employ δ for the distance function in bothM andO. This causes no confusion since the argument indicates which function is meant.
We employ the following logical symbols most of which are due toE. H. Moore: “∃” is read “there exist(s)”, “∀” is read “for all”, “·)·”, “:):”, etc. are read “implies”, “·∼·” is read “if and only if”, “ξ” is read “such that”, “Λ” is read “and”.
SeeKarl Menger,Untersuchungen über allgemeine Metrik, Math. Annalen, vol. 100 (1928), pp. 75–163; orL. M. Blumenthal,Distance geometries, University of Missouri Studies, vol. XIII (1938), pp. 1–142.
Author information
Authors and Affiliations
Additional information
Presented to the American Mathematical Society; April 20, 1951.
Rights and permissions
About this article
Cite this article
Ellis, D., Lang, G. The space of groupoids over a compactum. Acta Math. 89, 209–215 (1953). https://doi.org/10.1007/BF02393007
Issue Date:
DOI: https://doi.org/10.1007/BF02393007