By truth values do you mean Prop or something else?
In Coq, the type of truth values is called Prop. In other foundations, it might be encoded differently, including by encoding functions into truth-values as functions out of an arbitrary type.
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By truth values do you mean Prop or something else?
In Coq, the type of truth values is called Prop. In other foundations, it might be encoded differently, including by encoding functions into truth-values as functions out of an arbitrary type.