Hello to everybody, I am a new user and I am a bit confused. I have a smooth plane curve f(x,y)=0 defined over a finite field k and containing (0,0). x is a local parameter at (0,0). The local ring (k[x,y]/(f))_(x,y) can be viewe inside the Laurent series field k((x)). How can I compute the expansion of an element of (k[x,y]/(f))_(x,y) in k((x))? Which packages should I use? I have Maple 9. Thank you, Paola