Find out if your birthday is contained in the digits of Pi. First posted in Will's blog.

This site lets you enter your birthday as a sequence of numbers and it checks to see if that sequence of digits exists in the first 1254543 digits of Pi. Mine (12221982) wasn't in it, Maybe yours is. You can also enter any other sequence of digits to see if they exist as well. It probably would be simple to do this in Maple. Maybe it would work even better. Here is a challenge then, write a Maple application that does the same thing but to a greater number of digits. Link Via (CowPi)

I put on PhiMaTeX a simple sheet implementing first steps in percolation simulation : Percolation

It is hard to follow up the Math Rap, but the Pi Song is pretty geeky too. And it is kind of catchy. I wish it went on longer. Link (Via Trixie)

My thanks to Prof. Meade and Prof. Harrington for their suggestions on how to increase "maxmesh" or "abserr". Prof. Harrington's suggestion about adding 'maxmesh=500' as an option in dsolve didn't pan out, but I'll try other numbers--I understand the maximum is about 8000 plus. Prof. Meade's suugestion about adding "abserr=1e-4" also didn't pan out (on my Maple 9.5--Prof.Meade seems to be using Maple 10,though this shouldn't make a difference,methinks!) However,adding abserr=1e-3 as an option to dsolve DOES work! Very strange indeed. Anyway,I've got my graph,and thanks again to Prof. Meade et al.

I ran across this amusing article on a recent poll of British scientists on who's greater, Einstein or Newton? Of course you'll have to take the results with a "grain of salt" as it was not nearly as scientific as our own poll... :-)

I have written a relatively large simulation in Maple10 and it is literally taking forever to run for any decent size and time. I have been trying to convert to C to run in C, which became a serious problem, then I tried to use "compile" which again was very problematic. They seem to work only when the code is written in a C-like format anyway, in other words to use of lists and very fussy with arrays and procedures within procedures seems to create problems. I just wanted to ask if there is something clever I can do, to convert my procedure (there are about 20 of them) and if there is certain rigorous formatting I can do without having to literary re-write my whole code, as that is the way it seems now.

The Maple V Share Library was a wonderful facility for mathematicians comprising some 140 Maple routines, packages and worksheets written by Maple users and contributed freely to the Maple community. John Maplenut has written a short program which allows the Maple V Share Library for Windows to be accessed directly from all versions of Maple up to and including version 10. You can access the Package from the Maple Application Center or from John Maplenut - Updated Maple V Share Library.

One might expect to find all curve fitting tools in the Curve Fitting Package, but some are in the Optimization or Statistics Packages. Would it be possible to bring them all together?

J. Tarr

The Maple Conference is the annual user conference held in Waterloo, Canada. For 2006, the dates are July 23-26. The conference information page contains the initial details.

Hello , I have been trying to plot the solution to a boundary layer problem using Maple via the following programme: >BVP:={0.1*diff(y(x),[x$2]) + (x^0.5)*diff(y(x),x) - y(x) = 0, y(0)=0,y(1)=exp(2)}; >J:=dsolve(BVP,y(x), type=numeric,method=bvp[midrich]); >plots[odeplot](J,[x,y(x)], 0..1,color=blue,style=line,symbol=circle, symbolsize=12); However,before I can write the instructions to plot, I get an error message saying: "Error,(in dsolve/numeric,bvp) unable to achieve requested accuracy of 0.1e-5 with maximum 128 point mesh (was able to get 0.17e-4), consider increasing "maxmesh" or using larger "abserr" ."

Hello , I have been trying to plot the solution to a boundary layer problem using Maple via the following programme: >BVP:={0.1*diff(y(x),[x$2]) + (x^0.5)*diff(y(x),x) - y(x) = 0, y(0)=0,y(1)=exp(2)}; >J:=dsolve(BVP,y(x), type=numeric,method=bvp[midrich]); >plots[odeplot](J,[x,y(x)], 0..1,color=blue,style=line,symbol=circle, symbolsize=12); However,before I can write the instructions to plot, I get an error message saying: "Error,(in dsolve/numeric,bvp) unable to achieve requested accuracy of 0.1e-5 with maximum 128 point mesh (was able to get 0.17e-4), consider increasing "maxmesh" or using larger "abserr" ."

I'm running Maple 10.02, Mac OS X.4.3, and Java 1.5, and when I give Maple an inverse laplace transform with a number, it returns the correct answer. But when I give it the same thing but replace the number with an arbitrary constant (i.e., I replaced 4 with k) it doesn't seem to be able to figure it out. Any suggestions on this?

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I just push the last version of my sheet "proba4maple" dedicated to discrete probabilistic computations on my SourceForge hive.

The NIST Engineering Statistics handbook. It's a comprehensive collection of information on the effective application of statistical methods. Submitted by Mariner.