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Theorem even-or-succ-even

0 ≤ i ⊦ i % 2 = 0 ∨ (i + 1) % 2 = 0

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: 1
Proof steps: 2
Used lemmas: mod-mult-pos-02, even-not-ex,
Used spec theorems:
- Used simplifier rules: