[Scilab-users] Is cond([]) 0 or 1 ? (bug 15579)

[Rafael Guerra]

You guys may have missed the paper sent before on the algebra of empty matrices by Carl de Boor (Emeritus Professor in Mathematics and Computer Science), so I am sending it again:

https://pdfs.semanticscholar.org/0f3b/c36f19d5c6a761c19fbc3c4ebde2f31b0a10.pdf



He argues that the condition number of the square empty matrix [] = 0 and its det([]) = 1



Regards,

Rafael



-----Original Message-----
From: users [mailto:users-bounces at lists.scilab.org] On Behalf Of philippe
Sent: Sunday, May 27, 2018 11:24 PM
To: users at lists.scilab.org
Subject: Re: [Scilab-users] Is cond([]) 0 or 1 ? (bug 15579)



Le 27/05/2018 à 19:51, Samuel Gougeon a écrit :

> [...]

>

> Please let us know more about your proposal for 1 instead of 0.



I can't say it now, the best value also depends on the compatibility of this value with others assigned to matrix functions with argument [].  I would like to check it before, but with the example you mention 0 looks a better choice.



Philippe








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