Journal of the ACM Bibliography
Robert A. Di Paola. The
recursive unsolvability of the decision problem for the class of
definite formulas. Journal of the ACM, 16(2):324-327, April
1969.
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Additional Key Words and Phrases:
data retrieval system, Relational Data File, predicate calculus definite
formulas, recursively unsolvable decision problem, Trahtenbrot's theorem
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