Re: Re: Re: Re: Re: Bug Report - Two numerical values for a same variable
- To: mathgroup at smc.vnet.net
- Subject: [mg54473] Re: [mg54411] Re: [mg54350] Re: [mg54300] Re: [mg54271] Re: Bug Report - Two numerical values for a same variable
- From: DrBob <drbob at bigfoot.com>
- Date: Mon, 21 Feb 2005 03:44:41 -0500 (EST)
- References: <00ed01c512b0$2f242850$6400a8c0@Main> <curpbn$r28$1@smc.vnet.net> <200502150438.XAA29728@smc.vnet.net> <200502161936.OAA19223@smc.vnet.net> <d3d3aacf7f18939828890ce85676bd26@mimuw.edu.pl> <opsmcn3rqciz9bcq@monster> <07c9f53bde86ce72650298f7c2a6ccbc@mimuw.edu.pl> <opsmcqckt8iz9bcq@monster> <200502190731.CAA06012@smc.vnet.net> <200502200508.AAA20041@smc.vnet.net>
- Reply-to: drbob at bigfoot.com
- Sender: owner-wri-mathgroup at wolfram.com
>> I have no difficulty with Mathematica counting such things >> as Complex[E, Pi] as meaningless (although syntactically > correct). Have WRI document this, and I have no difficulty with it, either. It's tiresome getting, from a snappish third-party, SO many of the explanations WRI should provide. Bobby On Sun, 20 Feb 2005 00:08:28 -0500 (EST), Murray Eisenberg <murray at math.umass.edu> wrote: > I understand everything you say. Here's the crux, I think, of my not > being able to "rationalize" Mathematica's definition of what is or is > not an atom: > > Why is FullForm[2 + 3 I] not Plus[2, Times[3, I]]? > > Why is FullForm[2/3] not Times[2, Power[3, -1]] ? > > My suspicion is that this was simply a design decision made for reasons > of efficiency, and that therefore not much more can be said about it. > That's what makes it hard for me to swallow and explain to others. > > P.S. Unlike some others, I have no difficulty with Mathematica counting > such things as Complex[E, Pi] as meaningless (although syntactically > correct). > > > Andrzej Kozlowski wrote: >> ... >> Complex[Pi,E] does not have any meaning in Mathemaitca at all. Neither >> does Complex[Sqrt[2],Sqrt[3]] etc. Complex[a,b] only has a meaning when >> a and b are real numbers (exact or approximate). >> >> ... >> Of course all of these statements refer to the design of the language. >> To me they seem perfectly logical and natural. To you presumably not. >> Well, then there is nothing else to say. > -- DrBob at bigfoot.com www.eclecticdreams.net
- References:
- Re: Bug Report - Two numerical values for a same variable
- From: Scott Hemphill <hemphill@hemphills.net>
- Re: Re: Bug Report - Two numerical values for a same variable
- From: Murray Eisenberg <murray@math.umass.edu>
- Re: Re: Re: Bug Report - Two numerical values for a same variable
- From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
- Re: Re: Re: Re: Bug Report - Two numerical values for a same variable
- From: Murray Eisenberg <murray@math.umass.edu>
- Re: Bug Report - Two numerical values for a same variable