Sorry of course 2pi r is circumference , my mistake. So it must be 0³ then?

Power 3 would denote a volume, you are getting close to folks just ignoring you if you can't explain what you really mean. Give up the pseudo maths and try to explain in words - and don't make up posh sounding phrases, they just sound meaningless.

0^3?

How small can the smallest possible particle be? Rather than starting with an object and trying to de-construct it , I start off by considering 0 which is nothing.

I will write it as If thinking out aloud and maybe this style will work in explanation,

So I start with 0, a 0 geometrical ''point'', however it is not really a point, a point is too big, it is the centre of a point which is 0. So then I ask myself what does 0 look like next to 0, two 0 ''points'' , and it looks like 00 but 00 is really a line, a small line but a line, so 0^2 must equal 1, because two 0's next to each other I can now see 1 line, so if i then consider a 3d object, i need 3 zeros to represent xyz, so 0³ or 0^3 must be 1 also,

added - I read that back, that sounds easy to follow, the smallest measurement possible must be 0^2=00

and the smallest possible 3 dimensional particle must be 0^3 or 0³