Created
July 29, 2012 14:00
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一つだけの公理を用いる論理体系
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| 公理X: ((a -> b -> a) -> ((c -> d -> e) -> (c -> d) -> c -> e) -> (f -> g -> f) -> h) -> hとおく。 | |
| 定理P: α -> β -> γ -> β | |
| a' -> b' -> a' : (a -> b -> a) -> ((c -> d -> e) -> (c -> d) -> c -> e) -> (f -> g -> f) -> h | |
| a' : a -> b -> a | |
| b' : (c -> d -> e) -> (c -> d) -> c -> e | |
| a' : (f -> g -> f) -> h | |
| → b' -> a' | |
| → b' -> a -> b -> a | |
| → α -> β -> γ -> β | |
| 定理K: α -> β -> α | |
| P.α: ((a -> b -> a) -> ((c -> d -> e) -> (c -> d) -> c -> e) -> (f -> g -> f) -> h) -> h | |
| → P.β -> P.γ -> P.β | |
| → α -> β -> α | |
| 定理S: (α -> β -> γ) -> (α -> β) -> α -> γ | |
| P.α: X.a -> X.b -> X.a | |
| P.β: (X.c -> X.d -> X.e) -> (X.c -> X.d) -> X.c -> X.e | |
| P.γ: X.f -> X.g -> X.f | |
| P.β: X.h | |
| → X.h | |
| → (α -> β -> γ) -> (α -> β) -> α -> γ | |
| 定理I: α -> α | |
| S.α: K.α | |
| S.β: K.β | |
| S.γ: K.α | |
| → I' : (α -> β) -> α -> α | |
| I'.α : K.α | |
| I'.β : K.β -> K.α | |
| → I : α -> α |
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