29 lines
601 B
Text
29 lines
601 B
Text
constants a b c d : Prop
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set_option blast.strategy "unit"
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example (H : ¬ a → ¬ b → ¬ c ∨ ¬ d) : ¬ a → c → d → ¬ b → false :=
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by blast
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set_option blast.strategy "preprocess"
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example : ¬¬¬¬¬a → ¬¬a → false :=
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by blast
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example : ¬¬¬¬¬a → ¬¬¬¬a → false :=
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by blast
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example : ¬¬¬¬¬a → a → false :=
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by blast
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example : ¬¬a → ¬¬¬¬¬a → false :=
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by blast
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example : ¬¬¬¬¬a → ¬¬¬¬¬¬¬¬a → false :=
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by blast
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example : ¬¬¬¬¬a → a → false :=
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by blast
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example : ¬¬¬¬¬¬¬¬a → ¬¬¬¬¬a → false :=
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by blast
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