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Theorem sgn-base-02

⊦ sgn(false ' + true ' + bits) = false ' + true ' + bits

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: inv-sgn, sgn-append-01, sgn-append-02, sgn-append-03, sgn-ex, sgn-ex-01, sgn-first, sgn-in-01, sgn-length, sgn-length-02, sgn-not-empty, sgn-not-empty-01, sgn-notsame, sgn-notsame-01, sgn-one-01, sgn-sgn, sgn-sgn-01, sgn-zero,
Used by units in proved state: intops, int2bits,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 1
Used lemmas: sgn-base,
Used spec theorems:
- Used simplifier rules: