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Proof step 5 from proof twodiv-01 (previous step)

1 < m + 1, ∀ m0. m0 | m + 1 → m0 = 1 ∨ m0 = m + 1 ⊦ m = 1, 2 | m

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
∀ m0. m0 | m + 1 → m0 = 1 ∨ m0 = m + 1 ⊦ m = 1, m = 0, 2 | m

Rule argument

Additional information

Used simplifier rules: ⊦ 1 = m + 1 ↔ m = 0; (s)%c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ m + 1 ≠ 0; (s)% ⊦ 1 < m ↔ ¬(m = 0 ∨ m = 1); (s)