Abstract
If a Boolean algebra A is a field of subsets of a set X,and, in particular, if it is the dual algebra of a Boolean space X, then the points of X serve to define 2-valued homomorphisms on A (see §9). This comment suggests that if we start with a Boolean algebra A and seek to represent it as the dual of some Boolean space X, a reasonable place to conduct the search for points suitable to make up X is among the 2-valued homomorphisms of A. The suggestion would be impractical if it turned out that A has no 2-valued homomorphisms. Our first result along these lines is that there is nothing to fear; there is always a plethora of 2-valued homomorphisms.
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© 1974 Springer-Verlag New York Inc.
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Halmos, P.R. (1974). The representation theorem. In: Lectures on Boolean Algebras. Undergraduate Texts in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-9855-7_18
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DOI: https://doi.org/10.1007/978-1-4612-9855-7_18
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-90094-0
Online ISBN: 978-1-4612-9855-7
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