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Theorem two-ex

⊦ 2 * i = j1 ^2 + j2 ^2 → (∃ i1, i2. i = i1 ^2 + i2 ^2)

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: 4
Used lemmas: two-even,
Used spec theorems:
- Used simplifier rules: