Re: rank question

[Tatsuro MATSUOKA]

This is completely mistyping.
Sorry for the noise.

Please ignore the post.

Tatsuro
 


----- Original Message -----
> From: "Montgomery-Smith, Stephen" <
> To: Tatsuro MATSUOKA  "address@hidden"
> Cc: 
> Date: 2016/6/4, Sat 13:48
> Subject: RE: rank question
> 
> I got this for the first set of row deformations, which is different from 
> yours 
> in the (4,7) spot. 
> 
>     1    2    3    4    5    6    7
>     0   -8  -16  -24  -32  -40  -48
>     0   -8  -16  -24  -32  -40  -48
>     0   -8  -16  -24  -32  -40  -36
>     0   -8  -16  -24  -32  -40  -48
> 
> ________________________________________
> From: Help-octave address@hidden on behalf 
> of Tatsuro MATSUOKA address@hidden
> Sent: Friday, June 03, 2016 11:39 PM
> To: address@hidden; address@hidden
> Subject: Re: rank question
> 
> Sorry for my confusing post.
> I rewrite from the first. Please ignore the first two posts
> 
>>>  A=[ 
> 1,2,3,4,5,6,7
> 7,6,5,4,3,2,1
> 9,10,11,12,13,14,15
> 6,4,2,0,-2,-4,6
> 10,12,14,16,18,20,22
> ] 
> A =
> 
>     1    2    3    4    5    6    7
>     7    6    5    4    3    2    1
>     9   10   11   12   13   14   15
>     6    4    2    0   -2   -4    6
>    10   12   14   16   18   20   22
> 
>>>  rank(A)
> ans =  3
> 
> 
> The same results  are obtained on Scilab and Maxima.
> 
> However, row basic deformations of A give to
> 
>     1    2    3    4    5    6    7
>     0   -8  -16  -24  -32  -40  -48
>     0   -8  -16  -24  -32  -40  -48
>     0   -8  -16  -24  -32  -40  -48
>     0   -8  -16  -24  -32  -40  -48
> 
>     1    2    3    4    5    6    7
>     0    1    2    3    4    5    6
>     0    0    0    0    0    0    0
>     0    0    0    0    0    0    0
>     0    0    0    0    0    0    0
> 
> Is not the rank of A two (2)?
> Am I misled ?
> 
> 
> Tatsuro
> 
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