Re: Work on Basic Mathematica Stephen!
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- Subject: [mg130808] Re: Work on Basic Mathematica Stephen!
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Fri, 17 May 2013 04:35:26 -0400 (EDT)
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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 at 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 at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2838 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305
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- Re: Work on Basic Mathematica Stephen!
- From: Peter Klamser <klamser@googlemail.com>
- Re: Work on Basic Mathematica Stephen!