Re: [Axiom-math] Identity Matrix

[Ralf Hemmecke]

If you use SquareMatrix, then it is clear, what the identity matrix is,
namely 1. So one can just create such a matrix and then convert it to
the generic Matrix domain. But maybe, you actually like SquareMatrix
even better.

(1) -> 1$SquareMatrix(3,Integer)::Matrix(Integer)

        +1  0  0+
        |       |
   (1)  |0  1  0|
        |       |
        +0  0  1+
                                                        Type:
Matrix(Integer)

Ralf


On 08/11/2018 07:24 PM, address@hidden wrote:
> Hi,
> 
> is there a command / "shortcut" for creating the identity matrix of a certain 
> size?
> Or is it necessary to use the matrix()-command and set all the values on the 
> diagoanl to one and all others to zero?
> 
> Would be much easier, if there is something like identitiymatrix(3),
> which would make a 3x3 identity-matrix.
> 
> any ideas?
> 
> TIA,
>   pan.
> 
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