单词	set theory
释义	set theory noun : a branch of mathematics or of symbolic logic that deals with the nature and relations of sets set theoretic adjective Example Sentences Recent Examples on the Web His first major paper, published in 1925, set about refurbishing set theory along clean, logical lines. Samanth Subramanian, The New Republic, 8 Mar. 2022 Causal set theory, another contender for a theory of quantum gravity, posits that space and time are made of more fundamental components as well. Adam Becker, Scientific American, 20 Jan. 2022 Mathematicians and computer scientists had an exciting year of breakthroughs in set theory, topology and artificial intelligence, in addition to preserving fading knowledge and revisiting old questions. Quanta Magazine, 23 Dec. 2021 There are many different ways to construct the disjoint union using the axioms of set theory, which will not produce exactly the same set but will, necessarily, produce isomorphic ones. Emily Riehl, Scientific American, 17 Sep. 2021 The most famous example of undecidability in set theory is CH. Martin Goldstern, Scientific American, 16 Aug. 2021 It’s one of nine axioms in a system called Zermelo-Fraenkel set theory, or ZFC, that serves as the foundation of modern mathematics. Quanta Magazine, 26 Aug. 2021 In the late 1800s, German logician Georg Cantor, founder of modern set theory, discovered that not all infinite sets are equal. Martin Goldstern, Scientific American, 16 Aug. 2021 For certain values of the starting integer, the sequence generated by the variant of f does not end up arriving at 1, but set theory cannot demonstrate this. Jean-paul Delahaye, Scientific American, 28 Apr. 2021 See More Word History First Known Use 1936, in the meaning defined above
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