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Proof step 1 from proof insert-inter-notin-dom-nodes (conclusion)
⊦ ¬ adr ∈ st → (as ++ adr) ∩ dom nodes(st) = as ∩ dom nodes(st)
System applied rule normalize
And obtained the following new goals
Proof step 2
:
⊦ (as ++ adr) ∩ dom nodes(st) = as ∩ dom nodes(st), adr ∈ st
Rule argument
Additional information