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signs in the mathematica output

• To: mathgroup at smc.vnet.net
• Subject: [mg92444] signs in the mathematica output
• From: Simone Moriconi <simone.moriconi at eco.unipmn.it>
• Date: Tue, 30 Sep 2008 21:54:06 -0400 (EDT)

Hello everybody! I have a problem in using the Mathematica Package which is probably a bit stupid but very annoying when you have long expressions.. 

When I "FullSimplify" big equations, in the output the negative sign is always put aside i.e. if I do something like:

FullSimplify[(1-s)(1-a)]

I obtain 

(-1+s)(-1+a).

Which is very confusing with long and tedius expressions. Does anybody know a way to solve this problem?

Thanks a lot for your help!!