哥德尔不完全性定理的标准解释有多明确?
How definitive is the standard interpretation of Goedel's Incompleteness Theorem?
摘要:
对哥德尔的“不可判定”命题[(Ax)R(x)]的标准解释认为,尽管[~(Ax)R(x)]是PA可证明的,如果[(Ax)R(x)]是PA可证明的,但我们不能由此得出结论[~(Ax)R(x)]是PA可证明的。我们表明,这样的解释是不符合标准的演绎定理的一阶理论。
英文摘要:
Standard interpretations of Goedel's "undecidable" proposition, [(Ax)R(x)], argue that, although [~(Ax)R(x)] is PA-provable if [(Ax)R(x)] is PA-provable, we may not conclude from this that [~(Ax)R(x)] is PA-provable. We show that such interpretations are inconsistent with a standard Deduction Theorem of first order theories.
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