

Publisher: Cambridge University Press
E-ISSN: 1943-5886|42|4|564-578
ISSN: 0022-4812
Source: The Journal of Symbolic Logic, Vol.42, Iss.4, 1977-12, pp. : 564-578
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Abstract
Let IPC be the intuitionistic first-order predicate calculus. From the definition of derivability in IPC the following is clear:
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