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Theorem gcd-abs

⊦ abs(gcd(i, j)) = gcd(i, j)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: div-gcd-zero, gcd-div-gcd, gcd-div-rest, square-neq-any-pos-02, square-neq-pos-h,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: gcd-zero-02,
Used spec theorems:
- Used simplifier rules:
  - int-abs/lels-01
  - int-abs/abs-18