Date: Jun 16, 2013 5:14 AM
Author: Murray Eisenberg
Subject: Re: Multiplication by 0: non-zero in versions 8 and 9
In fact, the Mathematica behavior you observe in later versions, while
possibly disconcerting on strictly mathematical grounds, is reassuring
on software consistency grounds. Thus, the 9.0.1 documentation page
"Whenever you give a number with an explicit decimal point,
Mathematica produces an approximate
numerical result [for a calculation involving that number]."
Personally, I would be unhappy if I did a calculation some of whose
numbers were approximate yet whose answer gave a misleading exact
On Jun 15, 2013, at 4:23 AM, Sotirios Bonanos
> Hello ,
> I have noticed that in all Mathematica versions <8, multiplying a real
or complex number by the integer 0 gives 0, but in versions 8 and 9
> Times[0, 0.567] gives 0.
> Times[1.23 + I 2.45, 0] gives 0. + 0. I
> I don't know what prompted this change but it is definitely wrong: the
zero property of multiplication holds for real and complex numbers also
(see https://en.wikipedia.org/wiki/Multiplication#Properties) .
> Sotirios Bonanos
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