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Proof step 1 from proof neq (conclusion)

⊦ m ≠ n → (m < n +1 ↔ m < n)

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: s: ⊦ m < n +1 ↔ ¬ n < m;%ls-02: ⊦ m < n → ¬ n < m;%ls-03: ⊦ ¬ m < n → (¬ n < m ↔ n = m);