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Proof step 1 from proof bet-01 (conclusion)

⊦ 0 ≤ i → (i < 1 ↔ i = 0)

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: lsone: ⊦ i < 1 ↔ i ≤ 0;%anti: ⊦ i ≤ j → (j ≤ i ↔ i = j);