doronshadmi
Penultimate Amazing
- Joined
- Mar 15, 2008
- Messages
- 13,320
As usual you simply want it both ways, to assert that it has “no sum” yet draw a conclusion “smaller than the value of the given limit” based on your simple assumption of a sum “smaller than the value of the given limit”
Sum is a result of a finite addition that reaches the value of a given limit, by finitely many steps.
Proportion is a result of an infinite addition that approaches the value of a given limit, by infinitely many steps.
“smaller than the value of the given limit” is not a sum, but it is a proportion, which is possible exactly because the added values > 0 have no sum (they do not reach the limit, exactly because we deal with infinitely many elements).
As for the Archimedean "proof":
The Man said:What I (or more specifically Archimedes) did was multiply the series 1/2+1/4+1/8+1/16… by 2 meaning just adding it to itself.
What you are doing is this:
So as you see, nothing is changed, in both cases the added values only approach the limit (whether it is 1 or 2).