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Theorem lstwo

⊦ n ≠ 1 → (n < 2 ↔ n = 0)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: twols-02,
Used by units in proved state: nat-div, nat-prime, intnat, nat-even,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas: c, a, nls-fst, succ, oz, one-06, gen, f,
Used spec theorems:
- Used simplifier rules: