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Theorem two-mult

⊦ (i * j)^2 = i ^2 * j ^2

Type: A user defined theorem
Validity: The proof is valid.
Features: localsimp,
Comment:
Used by: div, euler-four-square-identity, euler-four-square-identity2, two-even, two-identity, two-pm,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 2
Used lemmas: neq, Square-def,
Used spec theorems:
- Used simplifier rules: