In the TTY version, there are all sorts of fascinating ways to have Maple stop/quit (on purpose). For example proc() quit end(); is one such way. Much more amusing is parse(qu||it,'statement'); which has interesting variations where one can really make it obscure what is going on. This does not work in the GUIs. But variations do produce rather entertaining results. For example, try FromInert(_Inert_STOP()); and note how the result is subtly different from qu||it; Now, try to do any GUI things on that first 'quit' (context-menus, drag&drop, etc, etc), and much fun ensues.

Is it possible to make Maple give coefficient directly and without using subs of a functio when partial derivatives appears in the expression? I:= s^2*a(s,y,z)+s*U(s)*diff(a(s,y,z),s)+s^2*g(s)*diff(a(s,y,z),y); I want to exract coeff of a(s,y,z)!!! I know that I can use subs to cancel terms with partial derivatives and then use coeff, but you can imagine how much painful it could be when you have about twenty expression from wich you have to exract other coeff Thanks in advance.

I'm working with Maple v10.03 I have a problem with the 'indices' function when I define a table and ask maple to give indices tab:=table([1,2,3,4,5,6,7,8,9,10]); indices(test); I get in output non-arranged indices [1],[2],[3],[5],[4],[7],[6],[10],[8],[9] it's confusing, is there a way to make maple give them arranged automaticly?

I just went through another chapter of Klima's title, "Applications of Abstract Algebra with MAPLE". Specifically the section on algebraic cryptography, if anyone is familiar with this title. I went through the example of the Hill Cryptosystem, and used again with another plaintext example of my own, and thought I'd also share this. I was wondering if anyone would know how to automate the code in this worksheet with or without maplets ? respectfully, Download 285_Maple 10 Classic Klima Algebraic Cryptography.mws
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The default dot density for exported GIF files is 96 dpi - necessary for screen display but not optimal for printing. Is there anywhere, internal or external to Maple 11, to monkey with the resolution to suit me? (Obviously, I can export GIF and then "alter" resolution in a third party package, but, hopefully obviously as well, this doesn't help as it is very lossy. I need to save the vector content directly to, say, a 200 dpi GIF image). Also, wmf and eps format exportations are not good options for me either, as these two file export formats fail to reproduce the graph I see on my Maple document: layering gets scrambled, transparency settings are ignored or altered, etc.

How many registered mapleprimes members are there, I wonder. And what proportion of those post here? If the postings totals page is anything to go by, then these next figures might be close: >=0 posts: 3117 >1 post: 1122 >5 posts: 265 It's not quite clear, since it may be that someone can register more generally (for the maple application centre) and so get listed here. There is also some indication that there may have been 4736 mapleprimes members to register to date.

Has Maple 11 changed the way you do mathematics? For me, it has. For me, Maple used to be a “mechanized mathematical assistant”. That is, when I was doing something mathematical, I would do it at my desk, with Maple on a computer beside me, to assist with some of the calculations. I used many sheets of paper; the papers were messy and disorganized. I would scribble equations, scratch out mistakes or recopy the good parts onto another sheet, have sub-results strewn about haphazardly, etc. With Maple 11, things are different. Now I do mathematics almost entirely within Maple. Now I keep everything in a document. I type formulae with 2D input, which looks much like how I would write things on paper, except neater. Graphics are interwoven with the formulae (and can be scribbled on). Mistakes are erased within the document. Sub-results are nicely put into collapsible subsections. The organization can, and of course does, change as I figure things out.

Jacques posted a link to an interesting article in the New Yorker about feature creep. Perhaps we should ask whether Maple is suffering from this malady, but before doing so we really need to answer the question "what is Maple for?" So here's a place to say what you think Maple's main purpose is/should be. Here's my shot: Maple's prime purpose is to help teach math. J.Tarr

The New Yorker has an interesting article on feature creep (via boingboing). Apparently research shows that we are drawn to things with an insane amount of features in them, then ``digital fatigue'' sets in, and then we prefer the simple versions.

For double-precision ("hardware") real and complex floating-point operations on Matrices, Vectors, and Arrays Maple makes use of its external-calling mechanism to get to compiled code. A great deal of such compiled code for array operations requires what are known as Basic Linear Algebra Subprograms (BLAS). The BLAS libraries provide support not only directly for Matrix-Vector arithmetic but also indirectly in other external compiled libraries used by Statistics, ArrayTools, LinearAlgebra[Modular], etc.

The input box for the email reply box is too short, either 4 or 5 lines. Consider increasing it to something reasonable.

While working on acer's most excellent competition, I hit on a different competition that could be fun too: generate the longest valid obscure Maple expression that actually "does something". My entry: `#`@`&^`$-0!; It returns NULL ! And now I need to go back to finding entries for acer's competition.

In the admirable quest to make Maple better and stronger, and since so few people responded to the Suggestion to add a searchable bug database here on mapleprimes, here's another tack.

What are the fewest keystrokes that can make the TTY commandline interface of Maple 10.06 or 11 crash?

By crash I mean something like bus-error or segmentation-fault, stack-limit-exceeded, or lost-kernel-connection. I don't mean a runaway computation that simply consumes all...

Dear Sir: I am using Maple 11. I try to change the font and size of both input and output display in TEXT mode as a default mode. But, I can not find an option to change them under TOOLS menu. Could you tell me how to do? Thanks.

Congratulation to Jacques on quickly passing the 600 mark. His time from 500 to 600 was impressively short. Just a brief note on stuff I've worked on over the weekend. A pretzel-based prettyprinter for Maple is working reasonably well. It inputs Maple source code and returns LaTeX macros. The prettyprinter handles line breaks, indentation, and uses user-configurable LaTeX macros to typeset keywords and operators. Currently I've gone overboard substituting symbols for operators, for example, instead of "A union B" it outputs "A \cup B"; that will be configurable. Haven't figured out ho