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Re: 'iscomplex' not a useful function


From: Muhali
Subject: Re: 'iscomplex' not a useful function
Date: Tue, 19 Oct 2010 18:10:19 -0700 (PDT)


James Sherman Jr.-2 wrote:
> 
> 1) iscomplex is not the negation of isreal if the argument is not numeric.
>  I believe that it is essentially:
> iscomplex(x) = isnumeric(x)&~isreal(x)
> 

My point is different. A functionionality as described in 1) should not be
named 'iscomplex', as from a mathematical viewpoint, e.g. 0, 1, pi, or i
(the imaginary unit) are all complex numbers. A name like 'isimag' would be
more correct and less misleading.

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