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Proof step 6 from proof dnode-elim-strong (previous step)

⊦ ∃ md0, sdt0. dnode(md, sdt) = dnode(md0, sdt0)

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

pos: right 1 terms: md, sdt

Additional information

Used terms: md, sdt