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Theorem two-ls

⊦ 0 < j → (j < 2 ↔ j = 1)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by:
Used by units in proved state: int-abs, int-mult, int-gcd, int-div, int-square,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: numeral-01, numeral, lsrec, trans, forward-pos,
Used spec theorems:
- Used simplifier rules: