Name: Feng Feng Date: 06/22/12-01:10:57 PM Z
Dear Rolf, thanks very much for your qiuck reply.
Sorry, I mean it used several miniutes to run the code with HighEnergyPhysics-4.2.0pre1.tar on Mathematica 5.2, while for the feyncalc600.zip on Mathematica 6.0, the time was more than half an hour, and so is the case with fc5beta3.tar.gz on Mathematica 5.2?
And I mean, the Tr seems much faster in FC4.2 than the later versions, does it?