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Theorem two-add-square

⊦ 0 ≤ i → ((i * (i - 1)) / 2 + i ≠ (i * (i + 1)) / 2 ↔ false)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: two-add-square-01,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 1
Used lemmas: div-mult-pos-rew,
Used spec theorems:
- Used simplifier rules: