Date: May 17, 2013 4:34 AM
Author: Dr. Peter Klamser
Subject: Re: Work on Basic Mathematica Stephen!
.... thank you for the response.

Every WRI employee writes this since years, but "fuzz" stays "fuzz"

and "fuzz" is not essential.

Peter

2013/5/16 Murray Eisenberg <murray@math.umass.edu>:

> If I understand this proposal aa), then I completely disagree. It is *essential* to have the ability to use a function Chop that, e.g., does the following:

>

> Chop[4. + 10.^-16 I]

> 4.

>

> The reason is that even when one starts with strictly real functions, it is often the case that Mathematica uses complex-function methods and, due to roundoff, returns results with some pure imaginary "fuzz".

>

> On May 16, 2013, at 3:28 AM, Peter Klamser <klamser@googlemail.com> wrote:

>

>> . .. A) First proposal: Identify useless or false constructions in Mathematica

>>

>> aa) Eliminating Chop[] for complex numbers. Complex numbers are

>> oderless and therefore nobody call estimate, weather the distance of 1

>> + 10^-google i to the real numbers is small or big. Chop[] is the

>> result of Mathematica design, that it presents often complex results, where

>> real values are the simpler result and can be reached by

>> ComplexExpand[].

>> The simplest solution is always the best solution.

>

> ---

> Murray Eisenberg murray@math.umass.edu

> Mathematics & Statistics Dept.

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> University of Massachusetts 413 545-2838 (W)

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>

>

>

>

>