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Proof step 7 from proof prime-ex-max (previous step)

0 < i, 1 < i, j < i, prime(j), j | i, 0 ≤ i, 2 ≤ i, j * j ≤ i ⊦ ∃ j. prime(j) ∧ j | i ∧ j < i ∧ (∀ j0. j < j0 ∧ j0 < i ∧ prime(j0) → ¬ j0 | i)

User applied rule weakening

And obtained the following new goals

Proof step 8:
j < i, 0 < i, prime(j), j | i, 2 ≤ i, 0 ≤ i ⊦ ∃ j. prime(j) ∧ j | i ∧ j < i ∧ (∀ j0. j < j0 ∧ j0 < i ∧ prime(j0) → ¬ j0 | i)

Rule argument

poslist: left 2, left 8

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