Logic.pair_eq: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/lib/logic.bend as Logic
Lines 101-104 of bend-collections-laws-crypto@1.0.0.0/proofs/lib/logic.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/logic.bend&start_line=101&end_line=104

import Base

def pair_eq(-A: Type, -B: Type, a: A, b: B, c: A, d: B, ea: {a == c : A}, eb: {b == d : B}) -> {(a, b) == (c, d) : A & B}:
  %ea : {(a, b) == (_, d) : A & B}
  %eb : {(a, b) == (a, _) : A & B}
  {==}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma