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Theorem zero-06

⊦ ¬ i < 0 ∧ ¬ j < 0 → (0 = i + j ↔ i = 0 ∧ j = 0)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: zero-07,
Used by units in proved state: int-abs, int-div,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: zero-05, add-c, add-a,
Used spec theorems:
- Used simplifier rules:
  - int-basic1/lst-01