Re: Re: Row vs. Column Vectors (or Matrices)
- To: mathgroup at smc.vnet.net
- Subject: [mg33948] Re: [mg33936] Re: Row vs. Column Vectors (or Matrices)
- From: "Eric L. Strobel" <fyzycyst at comcast.net>
- Date: Wed, 24 Apr 2002 01:22:01 -0400 (EDT)
- Reply-to: fyzycyst at mailaps.org
- Sender: owner-wri-mathgroup at wolfram.com
I think the point was that a Dot product was desired.
And a point of advice... Just remember, due to the way Mathematica deals
with matrices (and particularly column vectors), there are often extra sets
of braces surrounding results. Generally not a problem, until you try to
get at a particular matrix element -- depending upon how one does it, you
may have to 'peel the onion' several layers down.
(Asthetically, I find these artifacts a tiny bit annoying. I don't suppose
there's an automatic way of shedding them, is there?)
At the risk of making this reply too broad, is there any recent progress on
the front of *symbolic* matrix algebra/calculus?? I'm aware of NCAlgebra,
and while it is a workable stopgap I guess, there ought to be something
better, given that this has been a known inadequacy of Mathematica for many
on 4/23/02 7:14 AM, Adam Smith at adam.smith at hillsdale.edu wrote:
> See if the following is what you want
*** Demonstration of Outer Product removed ***
> Note that MatrixForm is such a so-called wrapper that essentially just
> changes the way things display on the screen.
> It is not necessary to put the 2nd vector in a 1-column format due to
> the construction of the Outer function.
> John Resler <John-Resler at kscable.com> wrote in message
> news:<aa05ug$25i$1 at smc.vnet.net>...
>> I'm new to Mathematica and am doing a little linear algebra. I am
>> aware of the MatrixForm[m]
>> function but I know of no way to create a row vector eg. [ 1.0 2.0 3.0
>> ] * [ 1.0
>> Can someone point me in the right direction? Thanks ahead of time.
Eric Strobel (fyzycyst at NOSPAM^mailaps.org)
There is never a single right solution. There are always multiple
wrong ones, though.
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