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Theorem square-zero-01a

⊦ 0.r ≤ r → ¬ (r + 1.r) * (r + 1.r + 1.r) ≤ 0.r

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: mult-com, mult-ass, zero-ls-02, mult-zero, num-distr-addboth-ls1, distr, mult-one, square-ls-02,
Used spec theorems:
- Used simplifier rules: