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Re: Rearranging terms - user-defined

• To: mathgroup at smc.vnet.net
• Subject: [mg127161] Re: Rearranging terms - user-defined
• From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
• Date: Mon, 2 Jul 2012 22:20:30 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Well, in my opinion the best way is:

a + b x - b y + O[x, y]^2 // Normal

a+b (x-y)


Dear Andrzej,

That is a nice method. Could you please kindly comment, what stays behind. >From the documentation it is not quite clear to me. It only states
"Normal<http://reference.wolfram.com/mathematica/ref/Normal.html>[expr] converts a power series to a normal expression by truncating higher-order terms."
but does not state, what expression is considered to be normal.

Best, Alexei

Alexei BOULBITCH, Dr., habil.
IEE S.A.
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