Scalar.inv: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend as Scalar
Lines 90-92 of bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend&start_line=90&end_line=92

import Base

# a^(n - 2): the inverse of a nonzero a, 0 for 0
def inv(+a: List<&2, Nat>) -> List<&2, Nat>:
  pow(a, inv_bits(), one())

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend&name=inv_bits
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend&name=one
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend&name=pow