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Proof step 12 from proof rtc-last (previous step)

Pelem(a, c), Pelem(c, c0), rtc(m0, Pelem)(c0, b), rtc(m0, Pelem)(c, c1), Pelem(c1, b), ∀ Pelem, a, c, b. Pelem(a, c) ∧ rtc(m0, Pelem)(c, b) → (∃ c. rtc(m0, Pelem)(a, c) ∧ Pelem(c, b)) ⊦ ∃ c. Pelem(a, c) ∧ rtc(m0, Pelem)(c, c1)

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

pos: right 1 terms: c

Additional information

Used terms: c