11 lines
203 B
Text
11 lines
203 B
Text
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import data.finset data.set
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open finset set
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definition to_set [coercion] {A : Type} (s : finset A) : set A := λ a, a ∈ s
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constant P {A : Type} (s : set A) : Prop
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variable s : finset nat
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check P s
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