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Theorem abs-add-zero

⊦ abs(i) + abs(j) = 0 ↔ i = 0 ∧ j = 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 4
Used lemmas: Abs-pos, absls, forward-le-02, sub-eq, sub-zero, Minus-def, abs-08,
Used spec theorems:
- Used simplifier rules: