Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

Re: How to separate a sum into terms

• To: mathgroup at smc.vnet.net
• Subject: [mg92044] Re: [mg92018] How to separate a sum into terms
• From: "Tong Shiu-sing" <sstong at phy.cuhk.edu.hk>
• Date: Thu, 18 Sep 2008 06:14:19 -0400 (EDT)
• References: <200809170829.EAA14092@smc.vnet.net>

Hi,

Since the Head of your sum is Plus, the following statement works:

a + b - c + f[1] - g[a]/g[b] /. Plus[p_, q__] -> {p, q}

Regards,
Shiu-sing
Hong Kong


----- Original Message ----- 
From: "Slava Rychkov" <slava.rychkov at gmail.com>
To: <mathgroup at smc.vnet.net>
Sent: Wednesday, September 17, 2008 4:29 PM
Subject: [mg92044] [mg92018] How to separate a sum into terms


> Hi!
> 
> I want to separate a Mathematica expression written as a sum into 
> separate terms
> E.g. for
> 
> a+b-c+f[1]-g[a]/g[b]
> 
> I want to get a list
> 
> {a,b,-c,f[1],-g[a]/g[b]}
> 
> Is there a simple way to do this?
> 
> Thanks,
> -- 
> Vyacheslav Rychkov                https://mail.sns.it/~rychkov
> Scuola Normale Superiore          Tel: +39-050-509068 (office)
> Classe di Scienze                      +39-050-3820086  (home)
> Piazza dei Cavalieri, 7                +39-3403925168 (mobile)
> 56100 Pisa                        Fax: +39-050-509045
> Italy                             E-mail: Rychkov at sns.it
> 
> 
> 
>

• References:
  • How to separate a sum into terms
    • From: Slava Rychkov <slava.rychkov@gmail.com>