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Proof step 38 from proof lift-unknown (previous step)

rs1 ∩ rs0 = ∅, R[rs0, f, g], r ∈ rs1, ∀ r1. (r1 ∈ rs1 → r1 = r) ∧ (r1 ∈ rs1 → f(r1) = (r1 = r ⊃ f(r);(∅ ++ r)[r1]o) ∧ g(r1) = (r1 = r ⊃ g(r);(∅ ++ r)[r1]a)) ⊦ # rs1 = 0, r = null, rs1 = ∅, ∃ o. ((r => o))(mk(rs1, f)), ∃ o. (g(r)[r => o] * R)[rs1 ∪ rs0, f, g], (r0 ∈ rs1 → r0 = r) ∧ (r0 ∈ rs1 → f(r0) = (r0 = r ⊃ f(r);(∅ ++ r)[r0]))

User applied rule all left

And closed the goal!

Rule argument

pos: left 4 terms: r0 abort: F discard: F computed: T

Additional information

Used terms: r0