If A, B, C, and D are languages over , prove that (a) (A B ^
Question:
(a) (A ⊂ B ^ C ⊂ D) 4 AC ⊂ BD and
(b) Aϕ = ϕA = ϕ.
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a x AC x c for some a A c C x BD ...View the full answer
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Related Book For 
Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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