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Proof step 7 from proof product-perm-equal (previous step)

perm(ints1, ints0 -1l i), i ∈ ints0, ∀ ints0. perm(ints1, ints0) → Π ints1 = Π ints0 ⊦ i * Π ints1 = Π ints0

User applied rule all left

And obtained the following new goals

Proof step 8:
perm(ints1, ints0 -1l i), i ∈ ints0, perm(ints1, ints0 -1l i) → Π ints1 = Π(ints0 -1l i) ⊦ i * Π ints1 = Π ints0

Rule argument

pos: left 3 terms: ints0 -1l i abort: F discard: T computed: T

Additional information

Used terms: ints0 -1l i