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Theorem psh-04

⊦ n ≠ 0 → (m < n -1 ↔ m +1 < n)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: ilf, ilf-01, numeral-2, prop-p-01, psh-01, psh-05,
Used by units in proved state: nat-basic2,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: lrec, elim-pred-c,
Used spec theorems:
- Used simplifier rules: