@Joe Riel 

Perhaps in Maple, the Iverson bracket should go as a function call, so that in this case, the answer could be 1/2*Iverson(i::integer and 1 <= i and i <= n) or 1/2*Iverson(i::integer,1<=i,i<=n). Or perhaps the bracket could go into a "conditional" call like conditional(1/2,[ i::integer and 1 <= i and i <= n]) (note that the PatternMatching packet already has the conditional construct, and Mathematica 8 comes with ConditionalExpression).

In this way, probably, the "functional" differentiation routine producing any such output, should not need to decide whether a condition like i^3 + j^3=k^3 holds, just write it. And, eventually, an specialized theorem-proving routine would take care of deciding.

@PatrickT 

Yes, branching of an opensource project is a possibility, but most likely not a good one. Consider the case of Axiom, where a tiny community of developers further split into three. The problem is rather the scarcity of expert developing power in relation to the size of the code base.

@PatrickT 

Yes, branching of an opensource project is a possibility, but most likely not a good one. Consider the case of Axiom, where a tiny community of developers further split into three. The problem is rather the scarcity of expert developing power in relation to the size of the code base.

@PatrickT 

About your first four tests for Maple 15 cmaple.exe from the cmd shell prompt, the first three work (in your sense) for me on Win XP 32, while the fourth one (with doubled escaped quotes) gives the same error message as you get. The error messages that you show seem to imply that additional quotes are being added, but I do not have Win 7 for testing right now. Perhaps someone else could do the check.

@PatrickT 

About your first four tests for Maple 15 cmaple.exe from the cmd shell prompt, the first three work (in your sense) for me on Win XP 32, while the fourth one (with doubled escaped quotes) gives the same error message as you get. The error messages that you show seem to imply that additional quotes are being added, but I do not have Win 7 for testing right now. Perhaps someone else could do the check.

@PatrickT 

Yes, Krusader is a KDE application, but I have been using it for years under Gnome in diverse distributions (Fedora Core, Debian, Ubuntu), with only occasional glitches. like when launching it.

@PatrickT 

Yes, Krusader is a KDE application, but I have been using it for years under Gnome in diverse distributions (Fedora Core, Debian, Ubuntu), with only occasional glitches. like when launching it.

@PatrickT 

It is likely that Maplesoft's bet for survival is Maplesim. About the case for opensourcing, you may find interesting my question and Jacques' answer (the logical order of that thread is disrupted).

@PatrickT 

It is likely that Maplesoft's bet for survival is Maplesim. About the case for opensourcing, you may find interesting my question and Jacques' answer (the logical order of that thread is disrupted).

@PatrickT 

On Linux, after years of search, I have found Krusader, quote:

[...] is an advanced twin panel (commander style) file manager for KDE and other desktops in the *nix world, similar to Midnight or Total Commander.

Indeed, it is quite close to Total Commander in functionality and I am quite satisfied with it. In particular, it allows tab switching of pannels.

@PatrickT 

On Linux, after years of search, I have found Krusader, quote:

[...] is an advanced twin panel (commander style) file manager for KDE and other desktops in the *nix world, similar to Midnight or Total Commander.

Indeed, it is quite close to Total Commander in functionality and I am quite satisfied with it. In particular, it allows tab switching of pannels.

@pagan 

My question was quite clear about the parse error message. I repeat it:

[...] Idem for the read form, with the parse error message though. By the way, what do you think about this error? Bug or feature?

@pagan 

My question was quite clear about the parse error message. I repeat it:

[...] Idem for the read form, with the parse error message though. By the way, what do you think about this error? Bug or feature?

@PatrickT 

I have reasons to think that someone at Maplesoft is listening. Nevertheless, you could raise the visibility by submitting a SCR. I am sceptic, though, about its fixing. Note that no bug fixing dot version has been provided for Maple 15, even for its regression bugs, and my guess is that none will come.

@PatrickT 

I have reasons to think that someone at Maplesoft is listening. Nevertheless, you could raise the visibility by submitting a SCR. I am sceptic, though, about its fixing. Note that no bug fixing dot version has been provided for Maple 15, even for its regression bugs, and my guess is that none will come.