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Theorem int2bits-len-one

⊦ 0 ≤ i → (# int2bits(i) = 1 ↔ i = 0)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: int2bits-leneq-pos,
Used by units in proved state: intops, bytes, byte,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 4
Used lemmas: uint2bits-empty, uint2bits-one, uint2bits-rec, int2bits-pos, int2bits-zero,
Used spec theorems:
- Used simplifier rules:
  - list/bitlista/Two
  - int-abs/bet
  - int-abs/lels
  - list/bitlista/Last
  - list/bitlista/len
  - list/bitlista/a
  - nat-basic2/one-03
  - list-data/bitlista/l
  - int-basic1/lst
  - int-div/div-two-zero-01
  - nat-basic2/a
  - nat-basic2/c
  - int-abs/forward-le-05
  - int-abs/lels-02
  - list/bitlista/len-02
  - int-abs/lels-01
  - int-basic1/ls-01