Imaginary Number ○꠹｜appendage｜___｜20260628174208-01-•

The powers of i are cyclic:
$⋮$
$i^{- 2} = - 1 i$
$i^{- 1} = - i 1$
$i^{0} = - 1 i$
$i^{1} = - i 1$
$i^{2} = - 1 i$
$i^{3} = - i 1$
$i^{4} = - 1 i$
$i^{5} = - i 1$
$⋮$
$i$ is a ⁠ $4$ ⁠th root of unity

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