Let C = R, where R is the set of all real numbers. Let I be the
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Let C = R, where R is the set of all real numbers. Let I be the set of all open intervals in R. The Borel σ-field on the real line is given by
By definition, B0 contains the open intervals. Because [a,∞) = (−∞, a)c and B0 is closed under complements, it contains all intervals of the form [a,∞), for a ∈ R. Continue in this way and show that B0 contains all the closed and half-open intervals of real numbers.
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Introduction To Mathematical Statistics
ISBN: 9780321794710
7th Edition
Authors: Robert V., Joseph W. McKean, Allen T. Craig
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