lean2/tests/lean/eq3.lean

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Variable Vector : Nat -> Type
Variable n : Nat
Variable v1 : Vector n
Variable v2 : Vector (n + 0)
Variable v3 : Vector (0 + n)
Axiom H1 : v1 == v2
Axiom H2 : v2 == v3
Check TransExt H1 H2
Set pp::implicit true
Check TransExt H1 H2