# 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.

## Categories

Topic Posts Last Post
Announcements 194 February 14 2013 by J F Ogilvie
Applications, Examples and Libraries 277 May 23 2013 by bornag
Product Tips & Techniques 533 May 08 2013 by eithne
MaplePrimes Commons General Technical Discussions 1007 May 21 2013 by Marvin Ray Burns
Education 213 May 17 2013 by Markiyan Hirnyk
MapleSim in Engineering Education 5 May 23 2013 by bornag
Product Suggestions 242 Yesterday at 5:12 PM by mriedel
MaplePrimes Suggestions 348 April 09 2013 by Bryon
Personal Stories 165 Yesterday at 5:12 PM by mriedel

## Latest Posts Latest Posts Feed

### residues of a function related to digital...

Yesterday at 5:12 PM by Maple

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I will post here the output of two commands that has me a bit worried. Of course it is entirely possible that I am overlooking something very simple, which is why I am writing to your site.

> residue(1/(2^s-1), s=2*Pi*I*3/log(2));                                           0

Some errors in MapleSim Tutorials! While I was working with MapleSim tutorials, I have encountered some problems that the results did not match the answer. I have uploaded the files, that I have worked on, in a zip file to this address (http://www.mediafire.com/download/2pirvfbawyjfa18/MapleSim_Projects.zip). The problems are as follows:

### 2,000,000 digits!

May 21 2013 by Maple

On May 17, 2013 I finished a 2,000,000 or more digit computation of the MRB constant, using only around 10GB of RAM. It took 37 days 5 hours 6 minutes 47.1870579 seconds. You can write marvin@marvinrayburns.com for the digits.
The program I used was based on Richard E. Crandall's work:
Richard E. Crandall, Unified algorithms for polylogarithm, L-series, and zeta variants (53 pages)

### On the shoulders of giants

May 17 2013 by Maple

I would like to pay attention to http://www.ams.org/samplings/feature-column/fc-2013-05 .
Comparing the Galileo's calculation 87654/53 with the capacity of Maple, the question arises:
"Are we  cleverer than Galileo Galilei?". I don't know the answer.

### All or nothing in graph theory with...

May 17 2013 by Maple

Introduction
The purpose of this post is the investigation of the connection between the connectivity of an undirected graph and the numbers of its vertices and edges with help of the GraphTheory package.
The reader is  referred to http://en.wikipedia.org/wiki/Graph_theory and to ?GraphTheory for info.
Let us...

### Quandl library for Maple

May 09 2013 by Maple

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Using the Quandl API, we have created a Quandl library for Maple.  The Quandl library for Maple provides easy access to Quandl’s repository of over 5 million time-series datasets from directly inside Maple, allowing you to utilize Maple’s robust tools for mathematical statistics and data analysis on Quandl’s extensive collection of data.  This library features a similar set of functionalities to the Quandl

### New global optimization toolbox

May 08 2013 by Maple Global Optimization

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We have just released a new, more powerful version of the Maple Global Optimization Toolbox.

For this new release, Maplesoft has partnered with Noesis Solutions to develop a new version of the Maple Global Optimization Toolbox that is powered by Optimus technology. Optimus, from Noesis Solutions, is a platform for simulation process integration and design optimization that includes powerful optimization algorithms. This advanced technology is now available...

### The Million Dollar Stop Sign: What...

May 02 2013 by Maple

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An intersection in my neighbourhood, currently controlled by a 2-way stop, is under consideration to become a 4-way stop.  This means the traffic that currently has the right-of-way will be required to come to a complete stop, wheras previously they could have coasted down the hill, and accelerated up the other side.   Politics aside, I was curious to explore the following question:

### Explicit equation of arbitrary continuous...

April 30 2013 by Maple

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It's interesting that every continuous piecewise linear function can be specified by one explicit equation with absolute values​​. The procedure JoggedLine carries out such conversion.

Formal arguments of the procedure:

A - a list of the coordinates of the vertices of the polyline or the continuous piecewise linear expression defined on the entire real axis.

B (optional) - a point on the left "tail"...

### Integral that Maple 17 cannot compute

April 29 2013 by Maple 17

Hi,

Here an example of integral that Maple 17 cannot calculate (mean of standard Gumbel distribution)

> G:=int(x*exp(-x)*exp(-exp(-x)), x = -infinity .. infinity);

The result is known as the Euler-Mascheroni constant as shown by a numerical computation:

> evalf(G);

0.5772156649

>  identify(%, extension = [gamma]);

gamma

> evalf(gamma)

0.5772156649

Also, it cannot compute the variance

### Maple 17: High Performance Polynomials

April 29 2013 by Maple

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As described on the help page ?updates,Maple17,Performance, Maple 17 uses a new data structure for polynomials with integer coefficients. Our goal was to improve the performance and parallel speedup of polynomial algorithms that underpin much of the system and create a platform for large scale polynomial computations. Shown below is the new representation for 9xy3z

### Image Processing Toolbox

April 24 2013 by Maple
Dear Colleagues,Surfing the web I found several applications in MatLab, which perform image processing. One of them caught my attention and challenge to reproduce in Maple.I attached the text of the original application and my attempt to play in Maple. I ask you your guidance, support and intervention to reproduce as faithfully as possible the original application. It was impossible on the final image point to the center of the circle and draw.I believe that together we can achieve...

### Happy Birthday to Maplesoft!

April 23 2013 by

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It’s hard to believe, but Maplesoft as a company has reached the quarter-century mark.  Twenty-five years ago this month, the founders launched this company as a vehicle to market, distribute and support a symbolic computation program they had created called Maple.  They had...

### Finish of the project

April 23 2013 by

My site of Russian Maple's Center (webmath.exponenta.ru) reached the milestone of 8000000 visits.

Year of foundation - 2000
Now - 8,000 visitors a day.
Since the Maplesoft is not interested in this project, I renamed it.
Current title: Site of Independent Work of students.
I wish you all good luck!

### Maple 16 update

April 22 2013 by Maple

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Just wanted to let everyone know that the fix provided for the plotting problem discussed here is now available as a Maple 16.02a update.  This update will be available through Check for Updates and through the Maple 16.02a download page.

eithne

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