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Theorem val-trans

⊦ str < str2 ∧ str2 < str3 → str < str3

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 7
Proof steps: 14
Used lemmas: Char-irref, Char-trans, Less-rec, Less-notempty, less-empty,
Used spec theorems:
- Used simplifier rules:
  - list/string-new/a
  - list/string-new/c