PROOF.c3.i: def of bend-kit-collections@0.1.4.1
Import: import bend-kit-collections@0.1.4.1/PROOF.bend as PROOF
Lines 126-128 of bend-kit-collections@0.1.4.1/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&start_line=126&end_line=128

import Base
import bend-mathlib@0.7.4.0/bool.bend as MBool

def c3.i(+a: Bool, +b: Bool, +c: Bool, ea: {a == True{} : Bool}, eb: {b == True{} : Bool}, ec: {c == True{} : Bool})
  -> {Bool.and(Bool.and(a, b), c) == True{} : Bool}:
  MBool.and_eq_true(Bool.and(a, b), c, MBool.and_eq_true(a, b, ea, eb), ec)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/bool.bend&name=and_eq_true