Dear All, So far we had pow(2,a+b).expand() -> pow(2,a)*pow(2,b), but exp(a+b).expand() -> exp(a+b). It will be also nice to have abs(a*b).expand() -> abs(a)*abs(b) and log(a*b).expand() -> log(a) + log(b) (for positive a and b, of course). Thus, I am proposing a patch for this. Best wishes, Vladimir -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk www: http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://www.worldscientific.com/worldscibooks/10.1142/p835