A note on cluster points of a semihereditary stable system of sets.
Authors:
W. F. Pfeffer and W. J. Wilbur
Journal:
Proc. Amer. Math. Soc. 21 (1969), 121-125
MSC:
Primary 54.20
DOI:
https://doi.org/10.1090/S0002-9939-1969-0238253-8
MathSciNet review:
0238253
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References | Similar Articles | Additional Information
- John L. Kelley, General topology, D. Van Nostrand Company, Inc., Toronto-New York-London, 1955. MR 0070144
- W. F. Pfeffer, A note on the lower derivate of a set function and semihereditary systems of sets, Proc. Amer. Math. Soc. 18 (1967), 1020–1025. MR 218503, DOI https://doi.org/10.1090/S0002-9939-1967-0218503-2
- W. F. Pfeffer, On the lower derivate of a set function, Canadian J. Math. 20 (1968), 1489–1498. MR 232906, DOI https://doi.org/10.4153/CJM-1968-149-8
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Article copyright:
© Copyright 1969
American Mathematical Society
