MaplePrimes Announcement

Today we have published an update to MaplePrimes that includes a variety of improvements. Many of these changes are a direct result of member feedback and suggestions, and I am very appreciative for that!

What follows is a brief summary of the changes. As always, we remain very interested in your thoughts and feedback, and look forward to your further suggestions.

Also, a note that, as mentioned in a previous post, we have already begun working on a further update to address the influx of spam we have been receiving. This update will be published within the next 2-3 weeks.

Updated Look and feel
The most obvious change is the updated interface. With a few exceptions, the previous layout and functionality has been maintained, but with a cleaner, more responsive, and more appealing look.

New message editor
This update includes a new text editor called CKEditor. This editor provides a simpler, cleaner experience for posting your messages and also aligns MaplePrimes more closely with the Maplesoft product suite.

You will notice a new flag icon in the upper right hand corner of the interface. This is the new MaplePrimes Notification feature, and it provides similar functionality to what we have become accustomed to on other social media sites. The icon is displayed in an orange color when you have notifications, and then when opened, your new notifications are highlighted in blue. Clicking on a notification will take you directly to the item being referenced.

Improved flow for removing spam messages
As any MaplePrimes moderator could tell you, removing spam on MaplePrimes was a cumbersome process taking 4 clicks. In this update, this process has been streamlined to 2 clicks, which will make the process considerably faster for our legion of spam fighters. In addition, the ability to remove spam is now available on all message types – comments, replies, etc.

Identification Badges
There are now 3 identification badges that are used throughout MaplePrimes wherever member information is displayed. These include:

 Denotes a member who works at Maplesoft

 Site moderators are the heart and soul of MaplePrimes, and are now identified by this new badge

 A member who also particpates in the Maple Ambassador Program

Other fixes and improvements
In addition to the changes mentioned above, several other minor fixes and improvements were made.

Featured Post

The new look and feel of MaplePrimes is ugly and disfunctional nearly beyond belief. Please put back the old look and feel ASAP. I am not commenting here about any new controls or features because I haven't tried them yet. The wasting of space on the screen is incredible. The windows with sharp corners are ugly. The grey colors make it look like selections are inactivated. Most of the controls that can be clicked on are not highlighted in ay way.

Just as an example of the waste of space, I now need to scroll down three screens just to get to the Active Conversations stack.

Once again, anything that you can do to make the look and feel similar to any StackExchange forum would be an improvement.

Featured Post

The material below was presented in the "Semantic Representation of Mathematical Knowledge Workshop", February 3-5, 2016 at the Fields Institute, University of Toronto. It shows the approach I used for “digitizing mathematical knowledge" regarding Differential Equations, Special Functions and Solutions to Einstein's equations. While for these areas using databases of information helps (for example textbooks frequently contain these sort of databases), these are areas that, at the same time, are very suitable for using algorithmic mathematical approaches, that result in much richer mathematics than what can be hard-coded into a database. The material also focuses on an interesting cherry-picked collection of Maple functionality, that I think is beautiful, not well know, and seldom focused inter-related as here.



Digitizing of special functions,

differential equations,

and solutions to Einstein’s equations

within a computer algebra system


Edgardo S. Cheb-Terrab

Physics, Differential Equations and Mathematical Functions, Maplesoft

Editor, Computer Physics Communications



Digitizing (old paradigm)



Big amounts of knowledge available to everybody in local machines or through the internet


Take advantage of basic computer functionality, like searching and editing



Digitizing (new paradigm)


By digitizing mathematical knowledge inside appropriate computational contexts that understand about the topics, one can use the digitized knowledge to automatically generate more and higher level knowledge




1) how to identify, test and organize the key blocks of information,


2) how to access it: the interface,


3) how to mathematically process it to automatically obtain more information on demand





                                           Three examples

Mathematical Functions


"Mathematical functions, are defined by algebraic expressions. So consider algebraic expressions in general ..."

The FunctionAdvisor (basic)


"Supporting information on definitions, identities, possible simplifications, integral forms, different types of series expansions, and mathematical properties in general"



General description





Differential equation representation for generic nonlinear algebraic expressions - their use


"Compute differential polynomial forms for arbitrary systems of non-polynomial equations ..."

The Differential Equations representing arbitrary algebraic expresssions


Deriving knowledge: ODE solving methods


Extending the mathematical language to include the inverse functions


Solving non-polynomial algebraic equations by solving polynomial differential equations





Branch Cuts of algebraic expressions


"Algebraically compute, and visualize, the branch cuts of arbitrary mathematical expressions"






Algebraic expresssions in terms of specified functions


"A conversion network for arbitrary mathematical expressions, to rewrite them in terms of different functions in flexible ways"



General description





Symbolic differentiation of algebraic expressions


"Perform symbolic differentiation by combining different algebraic techniques, including functions of symbolic sequences and Faà di Bruno's formula"






Ordinary Differential Equations


"Beyond the concept of a database, classify an arbitrary ODE and suggest solution methods for it"

General description







Exact Solutions to Einstein's equations



Lambda*g[mu, nu]+G[mu, nu] = 8*Pi*T[mu, nu]


"The authors of "Exact solutions toEinstein's equations" reviewed more than 4,000 papers containing solutions to Einstein’s equations in the general relativity literature, organized the whole material into chapters according to the physical properties of these solutions. These solutions are key in the area of general relativity, are now all digitized and become alive in a worksheet"

The ability to search the database according to the physical properties of the solutions, their classification, or just by parts of keywords (old paradigm) changes the game.

More important, within a computer algebra system this knowledge becomes alive (new paradigm).


The solutions are turned active by a simple call to one commend, called the g_  spacetime metric.


Everything else gets automatically derived and set on the fly ( Christoffel symbols  , Ricci  and Riemann  tensors orthonormal and null tetrads , etc.)


Almost all of the mathematical operations one can perform on these solutions are implemented as commands in the Physics  and DifferentialGeometry  packages.


All the mathematics within the Maple library are instantly ready to work with these solutions and derived mathematical objects.


Finally, in the Maple PDEtools package , we have all the mathematical tools to tackle the equivalence problem around these solutions.






Download:,    Digitizing_Mathematical_Information.pdf

Edgardo S. Cheb-Terrab
Physics, Differential Equations and Mathematical Functions, Maplesoft

Please do this problem

Maple 13 asked by shakuntala... 20 Yesterday

multiple assignment

Maple 13 asked by shakuntala... 20 October 21