Solution: Assume that B is a Boolean algebra with
Chapter 6, Problem 6.161(choose chapter or problem)
Assume that B is a Boolean algebra with operations+ and . Prove each statement without using any parts of Theorem 6.4.1 unless they have already been proved. You may use any part of the denition of a Boolean algebra and the results of previous exercises, however. a. There is only one element of B that is an identity for+. b.H There is only one element of B that is an identity for .
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