MaplePrimes Posts

MaplePrimes Posts are for sharing your experiences, techniques and opinions about Maple, MapleSim and related products, as well as general interests in math and computing.

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  • I am returning to Maple after a bit of a dry spell (I'll post about that in another posting) and see that each posting summary seems to be more about avatars and big thumbs than about content. I don't actually care about thumbs up or down; it's content that I want to know about. If 10 people think the post is not helpful, and I think that it is helpful, that's what counts. And it seems to me that the posts might be ordered by thumbs, and I'd like to see date order. Maybe I...

    Mathematica 8 is out and claiming over 500 new features.

    Looking through the list they are mostly things that Maple does not do but probably should. Perhaps for Maple 15?...

    http://www.wolfram.com/mathematica/new-in-8/

    Since sometime in 2006 I've been posting my thoughts of and discoveries concerning the MRB constant here on Maple Primes, and I will continue to do so. My hope, however, has been to publish some of my better ideas in a larger forum. I want to thank all of you for putting up with the roughness of many of my ideas when I first posted them. I still hope to refine and publish many of those rough concepts.

    Here my first published paper.

     

    I congratulate Robert Israel on being the first to attain the Mapleprimes Maple Master badge. It is well deserved.

    @Alejandro Jakubi Alejandro this is something like the 3rd time in as many weeks that you have used applyrule to nice effect, deftly providing a more general solution.

    This is great because applyrule deserves more notice, if not as a bug-free command then certainly as representative of a symbolic problem-solving methodology. (And heavier use can lead to more bug...

    Almost a couple of years ago,my quantum mechanics II course teacher was talking about the importance of diagonalizable matrices.Near the end of that lengthy class I was losing my attention & at that time he was talking about finding the diagonalization using Mathematica,but I was not sure.However,since I didn't/don't use Mathematica,I was trying to find the command to diagonalize a given matrix in Maple.I was using maple 13 then & I found a command  called "DiagonalMatrix(...

    A Half-Life table of the Isotopes

    ** edit change a[i,j]:=0 to a[i,j]:=1

    I was about to post this as a "How-do-I" question, but while composing my question, I stumbled upon the solution.  In case this "discovery" would be useful, I'm posting it here.

    For some coursework, I'm developing fitting sinusoids to experimental data (poor-man's Fourier Analysis).  At one point, I do a "brute-force-least-squares" computation, one step of which involves computing the sum of a sine over N equally-spaced intervals around the circle.  This...

    Just a small issue with how you insert a ^ (caret, wedge, circumflex, arrow, hat, what have you), / (forward slash), or * (star, asterisk) as a literal in a comment in Maple.

    In regular code, it works fine;

    Typing \_ produces _
    Typing \^ produces ^
    Typing \/ produces /
    Typing \* produces *

    In a comment, only underscores work as expected.  The caret, asterisk and slash leave behind the escaping backslash, which you will have to go back and delete yourself.

    In previous version  "e" was recognised as the constant.. Now, it is needed to write in special way to get

    the digits of "e" ( to use "expression palette")

     

    I really do not know if that is a progress or regression for Maple.

     

    JJ

    As some of you know, I'm hoping to, some day, find a closed form expression for the MRB constant.

     Here is my latest little nugget.

    Let x=MRB constant.

    (1-604*x)/(28+209*x) = log(x) with an error< ...

    I ran an advanced search in the application center at maplesoft and I'm not sure that it works properly.

    Under advanced search I left the search field blank and selected MapleV to find all applications submitted for MapleV.  The first thing that happens is that it comes up with applications rated for newer versions of Maple.  Then it asks to click here to search our archived Maple-related applications (prior to Maple 10).

    So I do that but it only produces...

    (This is a reply to PatrickT, who asked about a certain ArrayTools:-Copy example.)

    Suppose that you need to do a computation which requires, in part, a certain subportion of a Vector V. Let's call the routine which does the work as `f`. Let's suppose that `f` is a system command and not something that we write ourselves. One natural way to call `f` and supply the subvector is to call `f` like so:

       f( V[a..b] );
    

    Here the inner range a..b denotes...

    At http://www.maplesoft.com/applications/view.aspx?SID=97879 there seems to be a quite
    interesting contribution by Rob Corless, Erik Postma and David Stoutemyer.

    It would be helpfull and interesting to provide the according paper as well (through a link?).
    Hope this message is read by Eric Postma.

     

    PS: I wanted to drop an according message at the center as comment, but failed to log in,

    Aren't the acceptance numbers for various badges just way too high? Mapleprimes has only had 2 (one each) Good Posts at this date. And no Good Answers or Great ones of either type. But that's clearly not right, as the new site has had lots of great posts and answers. This same issue was raised long ago, and the admin response of long ago was that it would be revisited.

    And there...

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