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Suppose I have

GS[p].GS[p]it gives me

(p_slash)(p_slash), then I take trace

Tr[%]it gives me

4p^2

Now how can I tell mathematica to treat p^2 as m^2 ???

just typing %/. p^2->m^2 or similar think i think does not work...

Pls tell me if I am not clear with my question

Thank you

**Next message:**George: "How do I make following substitution"**Previous message:**Dimitry Fedorov: "Re: Multiplication of Dirac Gamma matrices by arbitrary matrix"**Next in thread:**George: "How do I make following substitution"**Maybe reply:**George: "How do I make following substitution"**Reply:**Ismail Turan: "Re: How do I make following substitution"**Reply:**hzgzlh: "Re: How do I make following substitution"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]**Mail actions:**[ respond to this message ] [ mail a new topic ]

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