Re: How to separate imaginary unit inside an arbitrary function?

• To: mathgroup at smc.vnet.net
• Subject: [mg32457] Re: How to separate imaginary unit inside an arbitrary function?
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Tue, 22 Jan 2002 03:19:20 -0500 (EST)
• Organization: Universitaet Leipzig
• References: <a2gi3d\$ks\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```Hi,

5*I is a single complex number ! and not Times[5,Complex[0,1]] it is
Complex[0,5].

Regards
Jens

Kostya wrote:
>
> Dear all
>
> Have a simple problem:
> have a function, say
> Name[5*I*a] but want to break it into multiples:
> Name[5*I*a]->Name[5]*Name[I]*Name[a]
>
> The issue is that the standard :> rule does not work properly:
> Name[5*I*a]//.{Name_[exa_*exb_]:>(Name[exa]*Name[exb]),
> Name_[exa_*exb_*exc_]:>(Name[exa]*Name[exb]*Name[exc])}
>
> yields just:
> Name[5*I]*Name[a] instead of desired "Name[5]*Name[I]*Name[a]"
>
> any suggestions?
>
> with regards
> Kostya

```

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