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Theorem ex-p

⊦ ((_∃ xP * P))(H) ↔ (∃ x. ((xP(x) * P))(H))

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: del-lists-unions,
Used by units in proved state: implementation-refines-caterpillar,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 11
Used lemmas: ex,
Used spec theorems:
- heap-sep/sep
Used simplifier rules: