In dividing an apple into 2,3,4,5...etc. pieces is to divide the apple into singular entities in themselves given each piece is equivalent to one. One cannot be observed on its own terms except through other ones thus necessitating each individual piece as empty in itself.
This can be seen in a line where the line cannot be observed except in relation to other lines which it both composes and is composed of.
Dually this same nature can be seen in 0, through a 0d point, where the point on its own terms cannot be observed given it is fundamentally nothing. The point is observed through its progression to another point with this progression resulting in the form of a line. In 0 progressing to 0 an equation of 0=0 occurs which is embodied spatially under the line. This 0=0 results in the first one given the line as a quantifiable entity begins its existence. One begins it equivocation to another one, as 1=1, when the line changes into another line through the 0d point.
Even then the point is only observed as the change from one line into another and as such is not so much a thing in itself but rather a mode of change
Thus 0=0 progresses to 1=1, as formlessness into form, where this equivocation is expressed under x=x given equality under the symbol of "=" occurs through a repetition of said phenomenon. Equality is only observed through repetition.
Under one portion x=x is the equivocation of forms, in another respect it is an equivocation of changes (formlessness) thus necessitating x as a variable equivalent to both form and change.
One as intrinsically empty in itself can be observed under the line fundamentally as a sideways loop, given its beginning and end points are the same 0d point as 0=0, thus necessitating 1 contains zero much in the same manner a loop contains emptiness. This empty nature of 1=1 occurs through its equivalence to the variable of x=x which further equivocates 1 to 0 given both 0 and 1, through the number line, are equivalent to x=x.
In simpler terms the number 1 as an empty loop contains 0=0; thus 1 is a mode of change to further numbers given it cannot exist on its own terms due to its premise being grounded in the emptiness of zero. Zero cannot be observed on it's own terms given it is nothing, and with the number 1 being grounded in this same nature it follows 0 as a mode of change given 1 must change into another 1 if it is to exist.
1 as empty is 1 as a mode of change to further 1. Form contains formlessness, as evidenced through the loop, and this formlessness is the means of change into another form.
1 is an empty loop evidenced by the line containing 0d points because it contains other lines and the fact the line contains both the same beginning and end points as the 0d point. 1 as an empty loop is 1 equating to 0 given all numbers change to further numbers, all ones change into further ones, due to their empty nature.