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Projection lemmas for ω-languages

✍ Scribed by Ludwig Staiger

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
611 KB
Volume
32
Category
Article
ISSN
0304-3975

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## Abstract An ω‐language is a set of infinite sequences (words) on a countable language, and corresponds to a set of real numbers in a natural way. Languages may be described by logical formulas in the arithmetical hierarchy and also may be described as the set of words accepted by some type of au

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