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Theorem bytes2int-leading-zero

⊦ 0 ≤ b2i(by) → bytes2int(i2b(0) ' + by ') = b2i(by)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: bytes2int-zero, bytes2int-rec-01,
Used spec theorems:
- Used simplifier rules:
  - int-abs/forward-le-01
  - list/bytelist/len-02
  - list/bytelist/len
  - list-last/bytelist/last-def
  - list/bytelist/a
  - intops/band-255-pos
  - byte/byte-mod-100x
  - intops/band-associativity
  - intops/band-commutativity
  - list-last/bytelist/butlast-def
  - int-basic2/add-zero
  - int-basic2/add-a
  - int-basic2/add-c
  - byte/byte-equal