Given a family LC P(I*) of languages over a common alphabet Σ, let I denote the set-theoretic union of all languages from L: I === A. AЄL Prove or disprove that if LCP(*) is finite and each AEL is decidable, then is decidable.

C++ for Engineers and Scientists
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Author:Bronson, Gary J.
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Chapter12: Adding Functionality To Your Classes
Section12.5: Virtual Functions
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Given a family LC P(I*) of languages over a common alphabet Σ, let I denote the set-theoretic union of all
languages from L:
I
===
A.
AЄL
Prove or disprove that if LCP(*) is finite and each AEL is decidable, then is decidable.
Transcribed Image Text:Given a family LC P(I*) of languages over a common alphabet Σ, let I denote the set-theoretic union of all languages from L: I === A. AЄL Prove or disprove that if LCP(*) is finite and each AEL is decidable, then is decidable.
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