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Theorem sgn-true
⊦ ¬ false ∈ bits ∧ bits ≠ [] → sgn(bits) = true '
Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by:
sgn-append-01
,
sgn-last-same
,
sgn-one-01
,
Used by units in proved state:
intops
,
int2bits
,
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 3
Proof steps: 6
Used lemmas:
sgn-mklist-03
,
Used spec theorems:
bitlista
/
mklist-intro
Used simplifier rules:
list-data
/bitlista/
l
list-last
/bitlista/
mk-empty