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Theorem tr-unfold

⊦ r ≠ null → ((tr(r, t) * hP)(h) ↔ (∃ t0, t1, a, r0, r1. t = branch(t0, a, t1) ∧ (r => mknode(r0, a, r1) * tr(r0, t0) * tr(r1, t1) * hP)(h)))

Type: A user defined theorem
Validity: The proof is valid.
Features: s,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 7
Used lemmas: tr-rec, tr-base, tr-fold,
Used spec theorems:
- Used simplifier rules: