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Proof step 5 from proof modeqp-copied (previous step)

i * j + j0 = i0 * j + j1, j0 < j, j1 < j, 0 < j, 0 ≤ j0, 0 ≤ j1 ⊦ i = i0

User applied rule cut formula

And obtained the following new goals

Proof step 6:
i * j + j0 = i0 * j + j1, 0 < j, j1 < j, j0 < j, i < i0, 0 ≤ j1, 0 ≤ j0 ⊦ i = i0
Proof step 11:
i * j + j0 = i0 * j + j1, 0 < j, j1 < j, j0 < j, 0 ≤ j1, 0 ≤ j0 ⊦ i = i0, i < i0

Rule argument

fma: i < i0

Additional information

Used formulas: i < i0