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Proof step 2 from proof cast-law-mult-pos (previous step)

0 ≤ j, 0 < i ⊦ cast(i, j * j0) = cast(i, cast(i, j) * j0)

User applied rule cut formula

And obtained the following new goals

Proof step 3:
0 < j % 2 ^ i, 0 ≤ j, 0 < i ⊦ cast(i, j * j0) = cast(i, cast(i, j) * j0)
Proof step 23:
0 ≤ j, 0 < i ⊦ 0 < j % 2 ^ i, cast(i, j * j0) = cast(i, cast(i, j) * j0)

Rule argument

fma: 0 < j % 2 ^ i

Additional information

Used formulas: 0 < j % 2 ^ i