def xe_z
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64addg.bend as F64addgimport Base
import bend-collections-laws-math@1.0.0.0/spec/math/f64.bend as SF
39def xe_z(+e: Nat, +hz: {Nat.is_eq(e, 0n) == True{} : Bool}) -> {xe(e) == 1926n : Nat}:
40 Equal.cong(Bool, Nat, t => SF.pick(Nat, t, Nat.sub(SF.zb(), 1074n), Nat.sub(Nat.add(e, SF.zb()), 1075n)), Nat.is_eq(e, 0n), True{}, hz)