Is that a property of imaginary numbers, or a property of relating two orthogona...

		andoando 10 days ago \| parent \| context \| favorite \| on: The Point of the Banach Tarski Theorem (2015) Is that a property of imaginary numbers, or a property of relating two orthogonal numbers? Legitimately asking because I can't find any special properties that imaginary numbers alone have in relation to themselves.