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Proof step 19 from proof mapex-new (previous step)

P(H) ⊦ (r =>_ * P)(H ++ r), r = null, r ∈ H

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ r =>_ = _∃ λ o. r => o

Rule argument

[x0lemmaarg: spec-name: instance-name: lemma-name: mapex antecedent: succedent: r =>_ = _∃ λ o. r => o substlist: [r] → [r] add preconditions?: F is rewrite lemma?: T current spec?: T rotate lemma?: F replace all?: T paths: ((1, 0, 0, 0, 1, 0)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r)]]