Below.some_inj: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/math/random/below.bend as Below
Lines 86-87 of bend-collections-laws-crypto@1.0.0.0/proofs/math/random/below.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/random/below.bend&start_line=86&end_line=87

import Base

def some_inj(+x: Nat, +y: Nat, e: {Some{x} == Some{y} : Maybe<&2, Nat>}) -> {x == y : Nat}:
  Equal.cong(Maybe<&2, Nat>, Nat, m => some_or(m, x), Some{x}, Some{y}, e)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/random/below.bend&name=some_or