Re: Adding elements of a matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg40638] Re: [mg40583] Adding elements of a matrix
- From: Dr Bob <majort at cox-internet.com>
- Date: Fri, 11 Apr 2003 02:06:12 -0400 (EDT)
- References: <200304100742.DAA24323@smc.vnet.net>
- Reply-to: majort at cox-internet.com
- Sender: owner-wri-mathgroup at wolfram.com
Is this what you mean?
m = {{a, b}, {c, d}};
Plus @@ Flatten@m
a + b + c + d
Bobby
On Thu, 10 Apr 2003 03:42:37 -0400 (EDT), Rebeca Choy <rchoy at ula.ve> wrote:
> Hi,
>
> How can I add in Mathematica every element of a matrix without adding
> twice the mixed terms?
>
> for example i have a matrix m[[i,j]] and i want to add every term where
> i<j (this is to avoiding adding twice the same number)
>
> Can I do it with Sum?
>
> Rebeca Choy
>
>
>
--
majort at cox-internet.com
Bobby R. Treat
- References:
- Adding elements of a matrix
- From: Rebeca Choy <rchoy@ula.ve>
- Adding elements of a matrix