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Proof step 11 from proof sgn-ex (previous step)

∀ boolvar. ∃ n. boolvar ' + bits = mklist(boolvar, n) + sgn(boolvar ' + bits) ⊦ ∃ n. boolvar ' + boolvar ' + bits = mklist(boolvar, n) + sgn(boolvar ' + bits)

User applied rule all left

And obtained the following new goals

Proof step 12:
∃ n. boolvar ' + bits = mklist(boolvar, n) + sgn(boolvar ' + bits) ⊦ ∃ n. boolvar ' + boolvar ' + bits = mklist(boolvar, n) + sgn(boolvar ' + bits)

Rule argument

pos: left 1 terms: boolvar abort: F discard: T computed: T

Additional information

Used terms: boolvar