10 lines
285 B
Text
10 lines
285 B
Text
structure Group :=
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(carrier : Type) (mul : carrier → carrier → carrier) (one : carrier)
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definition Group_to_Type [instance] : has_coe_to_sort Group :=
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has_coe_to_sort.mk Type Group.carrier
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constant g : Group.{1}
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set_option pp.binder_types true
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check λ a b : g, Group.mul g a b
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