Re: subscript question
- To: mathgroup at smc.vnet.net
- Subject: [mg71851] Re: subscript question
- From: dh <dh at metrohm.ch>
- Date: Fri, 1 Dec 2006 06:21:53 -0500 (EST)
- References: <ekmeng$8kg$1@smc.vnet.net>
Hi Dimitris,
in version 5.1 this works fine. Are you fooling yourself? Try using e.g.
CleanSlate[] or restart the kernel.
Daniel
dimitris wrote:
> mat = Table[Subscript[x, i, j], {i, 1, 3}, {j, 1, 3}];
>
> Something like
>
> Apply[Plus, mat, 1]
>
> works fine.
>
> However
>
> Tr[mat]
>
> returns back the command.
>
> Why?
>
> Thanks
>
> Dimitris
>