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Proof step 3 from proof coef-15 (previous step)

m * n + m0 * n ≤ 1 * n ↔ m + m0 ≤ 1 ∨ n = 0 ⊦ m * n + m0 * n ≤ n ↔ m + m0 ≤ 1 ∨ n = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: <toplevel> name: one seq: ⊦ m0 * 1 = m0 subst: [m0] → [n] flags: <all paths>

Additional information

Used simplifier rules: mult-c: ⊦ m * n = n * m; Used terms: n