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Theorem square-ls-04

⊦ 1.r ≤ r → ¬ r * (r + 1.r) < 2.r

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: square-ls-04a,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 4
Used lemmas: square-ge-one, two-def, mult-com, mult-ass, mult-one, distr,
Used spec theorems:
- real-abs/lele-add-notgr
Used simplifier rules: