ka'o PA5 cmavo

digit/number: imaginary i; square root of -1.

Acts as a number punctuation mark (separating the real and the imaginary parts of a complex number); for example "ci ka'o re" means 3 + 2i. See also: kau'o, ka'o'ai, ka'o'ei.

On affix form:

x1 is healthy/fit/well/in good health by standard x2.

In notes:

x1 is a complex number.
x1 is a real number.
quaternion i
imaginary i (non-comma)
imaginary i, comma - spherical coordinates: first coordinate gives magnitude (complex modulus/radius) of the number, the second number gives the angle from the positive real axis measured counterclockwise toward the 'positive' imaginary axis (default: in the primary branch/Arg) as measured in some units (which that number should contain; the contextless default will suppose radians); the angle is not normalized.
generic algebra unit en
quaternion j
quaternion k
ka'o zei namcu
x1 is a complex number (understood as such).
ka'ozeino zei namcu
x1 is a pure real number (such that its imaginary part is 0) understood as an example of a complex number.
nozeika'o zei namcu
x1 is a pure imaginary number (such that its real part is 0) understood as an example of a complex number.