Q1) Why doesn't this subthread show up when putting MPFR in the Mapleprimes Search?

Q2) How does Maple make use of these?

> # on a system with `ls`
> system(cat("ls ","bin*/*mpfr*"));
bin.APPLE_UNIVERSAL_OSX/libmmpfr.dylib
bin.APPLE_UNIVERSAL_OSX/libmpfr.1.0.0.dylib
bin.IBM_INTEL_LINUX/libmpfr.so.1
bin.IBM_INTEL_LINUX/libmpfr.so.1.0.0
bin.SUN_SPARC_SOLARIS/libmpfr...

I've spent two days trying to figure out why Maple won't allocate more than 512 MB of memory on my Mac. I've checked all the forums here an on Apple and it seems that this is a problem which has been around for at least two years, without being properly resolved. Previous posts can be found here:

http://www.mapleprimes.com/forum/memoryproblemsmac

http://www.mapleprimes.com/blog/mathgeek/macandmaplekernelissue

See the following PDF for the geometry of the MRB constant.

http://www.marvinrayburns.com/what_is_mrb.pdf

If you have any questions, I would like to hear them.

Marvin Ray Burns

Please let me know if Maple 11 will work in 64-bit Windows 7, and if there are any compatibility issues.

I'm moving my Maple from 32-bit Windows XP to a new 64-bit Windows 7 system.

Thanks,

Tim

Does anybody knows of a method using ImageTools to correct an image for lens distortion?

with (ImageTools):
img:=Create(480,640);

img[1,7]=.97;

                                             img[1,7] := 0.97

img[1,7];

Simon Plouffe has started an interesting thread on the usenet newsgroup comp.soft-sys.math.maple (viewable here, for those without good nntp server access).

They are discussing the speed of computation of exp(1.0...

How is it possible to get the following error message

Error, invalid input: DMat:-DSolveSys expects default value for keyword parameter begynd to be of type Vector, but received {}

?

I thought that the default value of a keyword parameter need not match any particular type, in fact so it says in the help page for 'Procedure Parameter Declarations' :

I had some problems using CodeGeneration and Compiler on a particular code.

Partially there are some bugs - and things, which need proper handling (not so obvious in advance, at least for me).
Details with comments are in the attached worksheet (or its pdf version)

Download 102_Some problems using CodeGeneration and Compiler.mws

I came across this poll,

and thought it would be nice to see what software people use here (some people have already said that the don't actually use maple, they only post here to help people).

So far it looks like not many people use Maple, hopefully once more people vote this poll will become more accurate:

http://users.ox.ac.uk/~hert3229/

Why are lists limited to 100 elements?  Will it be expanded?

It appears that once a new version of maple has been released, all refining and polishing up of the previous version stops. 

Are any of the older Maple versions still useful? 

I'm sure they still have their usefulness on older systems that don't have much memory and can't handle the newer versions system requirements.   Besides that, and the renaming of some routines and packages would one ever have the need to go back to an older version?  Let's say for example I have Maple 12, 9.5 and 7 on my machine and I wanted to start a worksheet, would I ever have the need to start one on Maple 7? 

I came across a reference to a Maple package named centermanifold. The reference is: Computation of Center Manifolds, Nov 11, 2000, Robert Corless, Keith Geddes and Xianping Liu.

But I couldn't get my hands on the package, I tried google and email but so far no success, does anyone at mapleprimes know if this package is available somewhere?

Or some very close substitute? thanks!

Although it's obvious and usual that newer or, the latest versions, consume more resources and CPU power, it is noticeable on a mediocre older system that Maple 13 is slower than Maple 12.  This point is merely for interest sake only and maybe for Maplesoft to take a look into their code to see if they can improve it's performance.