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Theorem one

⊦ m + n = 1 ↔ m = 0 ∧ n = 1 ∨ n = 0 ∧ m = 1

Type: A user defined theorem
Validity: The proof is valid.
Features: simp,
Comment:
Used by:
Used by units in proved state: list-last, nat-pair, nat-div, nat-prime, nat-even, list-perm, set-basic, nat-mult, nat-basic2, nat-basic2,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: z-01, oz, one-03, succ, c, a, z,
Used spec theorems:
- Used simplifier rules: