...don't commute. But there is more: squark:~$ ginsh ginsh - GiNaC Interactive Shell (GiNaC V0.5.3) __, _______ Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, (__) * | Germany. This is free software with ABSOLUTELY NO WARRANTY. ._) i N a C | You are welcome to redistribute it under certain conditions; <-------------' see the file COPYING for details. Type ?? for a list of help topics.

series(gamma(x),x,0,2); -EulerGamma+Order(x^2)+(1/12*Pi^2+1/2*EulerGamma^2)*x+x^(-1) collect(",x); -EulerGamma+Order(x^2)+(1/12*Pi^2+1/2*EulerGamma^2)*x+x^(-1) evalf("); -0.5772156649015328606L0+(0.98905599532797255544L0)*x+Order(x^(2.0L0))+x^(-1.0L0) quit; squark:~$ ginsh ginsh - GiNaC Interactive Shell (GiNaC V0.5.3) __, _______ Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, (__) * | Germany. This is free software with ABSOLUTELY NO WARRANTY. ._) i N a C | You are welcome to redistribute it under certain conditions; <-------------' see the file COPYING for details.

Type ?? for a list of help topics.

series(gamma(x),x,0,2); -EulerGamma+Order(x^2)+(1/12*Pi^2+1/2*EulerGamma^2)*x+x^(-1) evalf("); -0.5772156649015328606L0+(0.98905599532797255544L0)*x+Order(x^(2.0L0))+x^(-1.0L0) collect(",x); Not a 32-bit integer: -9223372028264841217 squark:~$

In any case, exponents should remain integer and even rational. Cheers -rbk. -- Richard Kreckel <Richard.Kreckel@Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/>