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Proof step 3 from proof notneg (previous step)

i ^ j < 0, i ^ j < i, i ^ j < j, 0 ≤ i, 0 ≤ j ⊦

User applied rule insert lemma

And obtained the following new goals

Proof step 4:
⊦ 1 < i ∧ 0 < j → ¬ i ^ j ≤ 1
Proof step 5:
i ^ j < j, i ^ j < i, i ^ j < 0, 0 ≤ j, 0 ≤ i, 1 < i ∧ 0 < j → ¬ i ^ j ≤ 1 ⊦

Rule argument

spec: <toplevel> name: notone seq: ⊦ 1 < i ∧ 0 < j → ¬ i ^ j ≤ 1 subst: [i, j] → [i, j]

Additional information

Used terms: i, j