is_RealNumber checks that the data type of the input is a RealNumber,
i.e., has parent a real field. It does not check whether the object
itself has some sort of abstract mathematical meaning as a real
number.
On 5/9/07, Timothy Clemans <[EMAIL PROTECTED]> wrote:
> {{{
> is_RealNumber(3)
> ///
> False
> }}}
>
> {{{
> is_RealNumber(sqrt(2))
> ///
> False
> }}}
>
> {{{
> is_RealNumber(pi)
> ///
> False
> }}}
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://www.williamstein.org
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