In music, the letter A denotes multiple pitches: not only 440Hz, but also 220Hz, 110Hz, 55Hz, etc. and 880Hz, 1760Hz, 3520Hz, etc. (these are approximations). The common feature of these is they are all powers of two times each other - i.e.:
I would like to say:
The note A in music is an example of a(n) _____, since it represents all numbers of the form
for
and
.
As in the title, mantissa means roughly what I want (though its meaning varies from context to context). Is there any word or common phrase that describes this situation?