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Theorem zero-eq

⊦ 0.r ≤ r ∧ 0.r ≤ r0 → (r + r0 = 0.r ↔ r = 0.r ∧ r0 = 0.r)

Type: A user defined theorem
Validity: The proof is valid.
Features: ws, lws,
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: 2
Used lemmas: le-def,
Used spec theorems:
- Used simplifier rules: