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Proof step 8 from proof prime-43 (previous step)

43 % i = 0, 1 < i, 0 < i, i < 7, i * i ≤ 43 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 9:
⊦ i ≠ j -1 → (i < j ↔ i < j -1)
Proof step 10:
43 % i = 0, i < 7 -1, 0 < i, 1 < i, i * i ≤ 43 ⊦ i = 7 -1

Rule argument

spec: int-basic1 name: ls-rec seq: ⊦ i ≠ j -1 → (i < j ↔ i < j -1) subst: [j, i] → [7, i] flags: <all paths>

Additional information

Used terms: 7, i