∀ {E : Type u_3} [inst : AddGroup E],
  AddGroupNorm.instMax =
    {
      max := fun p q =>
        let __src := p.toAddGroupSeminorm ⊔ q.toAddGroupSeminorm;
        { toAddGroupSeminorm := __src, eq_zero_of_map_eq_zero' := ⋯ } }