Teori

$\sqrt{\text{-} 1}

i $= D e n [[I m a g i n \overset{a}{¨} r a e n h e t e n * W o r d l i s t * ∣ i m a g i n \overset{a}{¨} r a e n h e t e n]]$ i $\overset{a}{¨} r d e f i n i e r a d s o m d e t t a l v a r s k v a d r a t \overset{a}{¨} r l i k a m e d$ \text{-} 1, $a l l t s \overset{a}{˚}$ \text{-} 1 = i^2. $D r a r m a n r o t e n u r d e t t a f \overset{a}{˚} r m a n l i k h e t e n$ \sqrt{\text{-} 1} = i.$