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Proof step 1 from proof prod-div-less-01 (conclusion)
⊦ 0 < i ∧ i < j ∧ 0 < i1 ∧ i1 < j → (i * i1) / j < i1
System applied rule normalize
And obtained the following new goals
Proof step 2
:
0 < i, i < j, 0 < i1, i1 < j ⊦ (i * i1) / j < i1
Rule argument
Additional information