def un.succ_inj
import bend-osdev-u32@0.1.0.0/PROOF.bend as PROOFimport Base
55def un.succ_inj(-a: Nat, -b: Nat, e: {1n+a == 1n+b : Nat}) -> {a == b : Nat}:
56 Equal.cong(Nat, Nat, z => un.pred(z), 1n+a, 1n+b, e)
import bend-osdev-u32@0.1.0.0/PROOF.bend as PROOFimport Base
55def un.succ_inj(-a: Nat, -b: Nat, e: {1n+a == 1n+b : Nat}) -> {a == b : Nat}:
56 Equal.cong(Nat, Nat, z => un.pred(z), 1n+a, 1n+b, e)