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Proof step 9 from proof ls-pos (previous step)

i ^ j < i ^ j0 ⊦ i ^ j ≤ i ^ j0

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ls-01: ⊦ i < j → ¬ j < i; from specification int-basic1%lels-01: ⊦ ¬ i ≤ j ↔ j < i; from specification int-abs