transfer
defines, given a group G and a subgroup of finite index H, a group homomorphism from G to the abelianization of H
en-US/ˈtɹænsfɚ/
en-GB/tɹænsˈfɜːɹ/
defines, given a group G and a subgroup of finite index H, a group homomorphism from G to the abelianization of H