Minor correction to properties of the scale function

I've corrected the statement that $s(x^{n})=s(x)^{n}$ for all integers $n$ , so that it (correctly) states that this only necessarily holds for $n\geq 0$ . I also enumerated these properties with bullet points. --mathemajor (talk) 12:55, 21 September 2015 (UTC)[reply]