Indig Numbers and the Power of the Powers of Two represent or create or determine octave. The only difference between one octave and any other octave is the power of two, all other factors being the same. In real vibratory terms this means a halving of length to increase by an octave or doubling of length to decrease by an octave.
Multiplicant determines relative placement, tone, note or degree of modulation or differentiation within the octave derived from the fundamental or tonic. The only arithmetical difference between one tone and any other tone within an octave is the relative value of the multiplicand.
A fundamental is a whole harmonic note from which all other notes of that octave are derived. In deriving these notes it is differentiated much like Undifferentiated White Light is refracted (differentiated) into its constituent colors. Russell says of this Universal Light: