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Theorem odd-add

⊦ odd(i + j) ↔ odd(i) ∧ even(j) ∨ even(i) ∧ odd(j)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 7
Proof steps: 11
Used lemmas: even-add, odd-even-rew,
Used spec theorems:
- Used simplifier rules: