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Theorem precedes-ascsubseq-2-h

⊦ ascsubseq(ix0 + n0 ' + ix1 + n1 ' + ix2, x) → (¬ precedes(n0, n1, x) ↔ false)

Type: A user defined theorem
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by: precedes-ascsubseq-2,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 6
Proof steps: 16
Used lemmas: precedes-trans, ascsubseq-rec,
Used spec theorems:
- Used simplifier rules:
  - list/indexseq/c
  - list/indexseq/a
  - list/indexseq/Nil