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Theorem bytes2bytes-first-pos

⊦ 0 ≤ b2i(int2bytes(bytes2int(by ' + bytes)).first) ↔ 0 ≤ b2i(by)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 6
Proof steps: 7
Used lemmas: bytes2bytes-first-neg,
Used spec theorems:
- int-abs/forward-lsle
Used simplifier rules:
- int-abs/zero-gels
- int-abs/zero-gels-01
- int-abs/forward-le-02
- int-abs/forward-lsle
- int-abs/forward-le-01
- list/bytelist/a
- int-abs/lels-04
- int-abs/lels-01