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Proof step 7 from proof fle (previous step)

m < n0, m < n, n ≤ n0, n0 ≤ m ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
m < n, m < n0, n0 ≤ m, n ≤ n0 ⊦ n0 = 0

Rule argument

Additional information

Used simplifier rules: f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic