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AN00150430-00000104-0033.pdf
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Title |
Title |
カット除去法による独立性証明
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Kana |
カット ジョキョホウ ニ ヨル ドクリツセイ ショウメイ
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Romanization |
Katto jokyoho ni yoru dokuritsusei shomei
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Other Title |
Title |
Independence proof via cut elimination method
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Creator |
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浜野, 正浩
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Kana |
ハマノ, マサヒロ
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Romanization |
Hamano, Masahiro
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Affiliation |
北陸先端科学技術大学院大学
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三田哲學會
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Kana |
ミタ テツガクカイ
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Romanization |
Mita tetsugakukai
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Issued (from:yyyy) |
1999
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哲學
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104
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1999
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12
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Start page |
33
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End page |
44
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Abstract |
We give a direct independence proof of Kirby-Paris' Hydra Game [9] from Peano Arithmetic (PA). This is done by giving a relationship between Gentzen's consistency proof [5] for PA and the Hydra Game. Compared with Kirby-Paris' and Cichon's [3] proofs, our proof is direct in that we do not use any finite characterization theorem of the PA-provably recursive functions. We prove that one step reduction of Kirby-Paris' Hydra Game corresponds to finite steps of Gentzen's proof reduction. With the help of Godel's Incompleteness Theorem, Kirby-Paris' unprovability result follows.
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Table of contents |
1. はじめに
2. Kirby-ParisのHydra Game
3. GentzenのPAのためのcut除去法
4. cut除去法による定理1の証明
5. まとめ
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