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Theorem square-ls

⊦ 0 ≤ i ∧ 0 ≤ j → ((i * (i + 1)) / 2 < (j * (j + 1)) / 2 ↔ i < j)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: square-ls-01, square-ls-02,
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: square-even, ls-even,
Used spec theorems:
- Used simplifier rules: