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Theorem three

⊦ m ≠ 0 ∧ n ≠ 0 ∧ m ≠ 1 → (m + n = 3 ↔ m = 2 ∧ n = 1)

Type: A user defined theorem
Validity: The proof is valid.
Features: ws, lws,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas: numeral-1, disj-zero-succ, two-01, rec, gen, c, a,
Used spec theorems:
- Used simplifier rules: