--

definition id2 (A : Type*) (a : A) := a

check id2 Type* num

check id2 Type* num


check id2 Type num

check id2 _ num

check id2 (Type (_+1)) num

check id2 (Type (0+1)) num

check id2 Type* (Type 1)

check id2 (Type*) (Type 1)