Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The study of the properties of sets.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mathematics The mathematical theory of sets.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the branch of pure mathematics that deals with the nature and relations of sets

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