As a side note, the general idea behind an axiomatic system is to have a few, simple axioms and derive the rest of the theorems from them. Your axiom here includes a bunch of ideas, some of which aren't precisely defined.Check this out:
AXIOM: Numbers that involve a mantissa, operator, or fractions are not actual elementary numbers, they are numeric terms involving an arithmetical operator denoting a PROCESS on a number.
In any case, a problem with this is that mantissas and fractions and such are elements of particular number representations, not the numbers themselves. Case in point: the number corresponding to "three-eighths" can be written without a fraction.
My problem with this is that we define what you call "elementary" numbers using a process, as well. The number two is an abstraction of counting/grunting more than once and less than thrice.√2 is therefore not a number, it is a numeric PROCESS requiring additional computation to cognize than just a number. It is a question and answer involving the number 2: "What number when multiplied by itself yields 2?"
In the standard construction (Peano), the number two is the successor of the successor of the empty set. The process is "successor of".