Mathematics – Category Theory
Scientific paper
2008-09-23
Mathematics
Category Theory
Full version. Inserted Sections 3-7, Coda. Introduction and summary unchanged
Scientific paper
We construct here an iterative evaluation of all PR map codes: progress of this iteration is measured by descending complexity within "Ordinal" O := N[\omega] of polynomials in one indeterminate, ordered lexicographically. Non-infinit descent of such iterations is added as a mild additional axiom schema (\pi_O) to Theory PR_A = PR+(abstr) of Primitive Recursion with predicate abstraction, out of forgoing part RCF 1. This then gives (correct) "on"-termination of iterative evaluation of argumented deduction trees as well, for theories PR_A+(\pi_O). By means of this constructive evaluation the Main Theorem is proved, on Termination-conditioned (Inner) Soundness for such theories, Ordinal O extending N[\omega]. As a consequence we get Self-Consistency for these theories, namely derivation of its own free-variable Consistency formula. As to expect from classical setting, Self-Consistency gives (unconditioned) Objective Soundness. Termination-Conditioned Soundness holds "already" for PR_A, but it turns out that at least present derivation of Consistency from this conditioned Soundness depends on schema (\pi_O) of non-infinit descent in Ordinal O := \N[\omega].
Pfender Michael
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