'Universal set u' presentation slideshows

Mathematics and TOK

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Discrete Structures

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Mathematics and TOK

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Basic Definitions of Set Theory

Basic Definitions of Set Theory. Lecture 24 Section 5.1 Fri, Mar 2, 2007. The Universal Set. Whenever we use sets, there must be a universal set U which contains all elements under consideration. Typical examples are U = R and U = N .

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Basic Definitions of Set Theory

Basic Definitions of Set Theory. Lecture 25 Section 5.1 Mon, Mar 5, 2007. Disjoint Sets. Sets A and B are disjoint if A ? B = ? .

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