Characteristic 8. The fact that there is only one quantity to exist and there is no second quantity to select is indicated by the change in direction representing the accumulation of infinitely many quantities, which means that this one quantitative continuum cannot be carried out by the algorithms of ‘include’ expressed by () and ‘equal divide’ expressed by/as axiom 1. In other words, the operations of addition, subtraction, multiplication, and division cannot be established by the quantitative continuum of the change in direction representing infinitely many quantities due to its uniqueness of this one quantitative continuum. Thus, infinitely many quantities indicated by the change in direction, being equivalent to forever superposing a finite quantity that can also not reach infinity, can only be expressed by using the size property described by characteristic 5 and not by using gradually increasing numbers, such as 31415962……(extending forever) or 45879……(extending forever). that can be established by the operations of addition, subtraction , multiplication, and division(2). As an example, the infinite value of √2, is not the resulting value of 1.414……(sequentially extending forever and never stopping) but a value of the change in direction, which represents the infinitely great, defined as something never reached by a sequential extension, and implies a jump from finity to infinity. The change in direction also implies that these infinite values are unique (indicating that the operations of addition, subtraction, multiplication, and division cannot be established), and the decimal point have lost its meaning Why? Since the size of two quantities can be compared, which is only meaningful within a limited range, and the addition, subtraction, multiplication and division operation between infinite quantities cannot be carried out (this phenomenon is caused by the jump characteristics caused by obtaining infinite quantities), that is, the size of two infinite quantities cannot be compared, so a decimal point value cannot be extended to infinity.. Consequently, the uniqueness of the infinitely great is also the final destination of all infinite integers, infinite repeating and infinite nonrepeating decimals.