9 lines
203 B
Text
9 lines
203 B
Text
constant H [backward] : A → B
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constant G [backward] : A → B → C
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constant f [backward] : T → A
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backward rules
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exists_unique ==> exists_unique.intro
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B ==> H
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A ==> f
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C ==> G
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Exists ==> Exists.intro
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