Quater-imaginary Base
The quater-imaginary numeral system was first proposed by Donald Knuth in 1955, in a submission to a high-school science talent search. It is a non-standard positional numeral system which uses the imaginary number 2i as its base. It is able to (almost) uniquely represent every complex number using only the digits 0, 1, 2, and 3. (Numbers less than zero, which are ordinarily represented with a minus sign, are representable as digit strings in quater-imaginary; for example, the number −1 is represented as "103" in quater-imaginary notation.)
Read more about Quater-imaginary Base: Decompose The Quater-imaginary, Converting From Quater-imaginary, Converting Into Quater-imaginary, Radix Point ".", Addition and Subtraction, Multiplication, Tabulated Conversions, Examples
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