Substitutions of Ξ£10-sentences: explorat
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Albert Visser
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Article
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2002
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Elsevier Science
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English
β 347 KB
This paper is concerned with notions of consequence. On the one hand, we study admissible consequence, speciΓΏcally for substitutions of 0 1 -sentences over Heyting arithmetic (HA). On the other hand, we study preservativity relations. The notion of preservativity of sentences over a given theory is