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arXiv 2006.01057math.LO
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排中律如何适用于第二不完全性定理及其边界情况例外

How the Law of Excluded Middle Pertains to the Second Incompleteness Theorem and its Boundary-Case Exceptions

Dan E. Willard

摘要:

我们早期的出版物表明语义tableau承认第二不完全性定理的部分例外,其中形式主义承认其自洽性,并将乘法视为3路关系(而不是全函数)。我们现在证明,如果表劳将排中律视为逻辑公理的模式(而不是导出定理),这些边界情况规避将崩溃。

英文摘要:

Our earlier publications showed semantic tableau admits partial exceptions to the Second Incompleteness Theorem where a formalism recognizes its self consistency and views multiplication as a 3-way relation (rather than as a total function). We now show these boundary-case evasions will collapse if the Law of the Excluded Middle is treated by tableau as a schema of logical axioms (instead of as derived theorems).

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