| n0 = m + 1 ⊦ n0 = 0, nP ⊗_(n, n0 + m0) = nP ⊗_(n, m0) * nP(n + m0) * nP ⊗_(n + m0 + 1, m) |
⊦ nP ⊗_(n, (m + 1) + m0) = nP ⊗_(n, m0) * nP(n + m0) * nP ⊗_(n + m0 + 1, m)
Used simplifier rules: c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ m + 1 ≠ 0; (s)