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Theorem square-zero-01

⊦ 0 ≤ i → ¬ (i + 1) * (i + 2) ≤ 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: square-lez, numls-13, numsucc, one, commutativity, associativity, dist-lsplit,
Used spec theorems:
- Used simplifier rules: