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Theorem bits2int-neg-1bit

⊦ i < 0 → bits2int(true ' + int2bits(i)) = i

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 2
Used lemmas: int2int-inj, int2bits-sgn, int2bits-first-01, int2bits-not-empty, bits2int-neg, bits2int-sgn, bits2int-sgn-intro,
Used spec theorems:
- bitopsaux/sgn-rec-01
Used simplifier rules:
- list/bitlista/c
- bitopsaux/invert-one
- list/bitlista/a
- int-abs/negeq