Logic.true_false: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend as Logic
Lines 16-17 of bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend&start_line=16&end_line=17

import Base

def true_false(e: {True{} == False{} : Bool}) -> Empty:
  false_true(Equal.sym(Bool, True{}, False{}, e))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend&name=false_true