Abstract
A topology T in a set X is a class of subsets of X (called open sets) satisfying the following axioms:
-
(1)
the union of any number of open sets is open;
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(2)
the intersection of any two (or finite number of) open sets is open;
-
(3)
X and the empty set (∅) are open.
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© 1996 Hindustan Book Agency
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Chandrasekharan, K. (1996). Topological Preliminaries. In: A Course on Topological Groups. Texts and Readings in Mathematics, vol 9. Hindustan Book Agency, Gurgaon. https://doi.org/10.1007/978-93-80250-89-2_1
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DOI: https://doi.org/10.1007/978-93-80250-89-2_1
Publisher Name: Hindustan Book Agency, Gurgaon
Print ISBN: 978-81-85931-10-4
Online ISBN: 978-93-80250-89-2
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