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Theorem one-04

⊦ n ≠ 0 → (m + n = 1 ↔ n = 1 ∧ m = 0)

Type: A user defined theorem
Validity: The proof is valid.
Features: ws, lws,
Comment:
Used by: addex, two-01,
Used by units in proved state: nat-mult,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: c, a, one-06, one-05,
Used spec theorems:
- Used simplifier rules: