Mathematica

Chi Square Areas
Hi, Can someone show me how to get Mathematica to provide the areas to the right of a given critical value of the Chi Square distribution ? The table entries shown at http://www2.lv.psu.edu/jxm57/irp/chisquar.html are what I need to compute. For example, given 8 degrees of freedom and a probability value of ... 14 Jul 2010 06:35

deploying a package in human-unreadable form
Dear group members, I have written a package (as a *.m) file and wish to publish it without giving everybody access to the source code. Is there a way to do this? I have tried using DumpSave, which goes part of the way by removing the comments from the source code. But I'd prefer total code obfuscation or compilat... 14 Jul 2010 06:35

Any idea how to parallelize this small code
Hi, just think your calculation of the new P through: The algorithm relies on the order of the Do since it uses not only oldP for the calculation of the "new P". So for calculating the value P[[i]] it is required that the values of P for smaller i are already calculated to evaluate the term Sum[A[[i, j]] P[[j... 10 Jul 2010 04:07

Quantum Factorization Shor Algorithm in Mathematica
Dear group members: We have updated our Quantum Mathematica add-on for Dirac bra ket notation, simulation of quantum computing circuits and noncommutiative algebra. This is now version 2.2.0 Among the many updates, we have an implementation of the Quantum Fourier Transform that is fast enough for the simulatio... 10 Jul 2010 04:06

How to *really* remove a symbol?
I occasionally run into a situation where a symbol refuses to get removed. For instance I can do the following ClearAll[appPlot]; Clear[appPlot]; Remove[appPlot]; Information[appPlot]; OwnValues[appPlot] and it displays {}, and "Information" reports nothing for that symbol. But then if I issue "OwnValues[ap... 12 Jul 2010 01:59

Simple Question
Dear All Is it possible in Mathematica to generate a stand-alone code that doesn't require Mathematica to exist for execution. I have done this in Fortran and wondering if this exists in Mathematica. Your help is appreciated. Regards, HMQ ... 12 Jul 2010 08:29

3D view direction
Hello Group, My computer is very slow with a 256x256 array with listplot3d I can move the graph with the mouse or it takes forever, I always use arrayplot for this but I need the 3D graph this time. How to set up a view direction in ListPlot3D so I wont have to move it ? ListPlot3D[ Table[Sin[x + y]/(.5 + ... 11 Jul 2010 07:12

image is not graphics
I have to admit that I'm really tired with Mathematica's assumption that "Image is not a graphics primitive or directive": I lost track of how many times I received that annoying error, due to this stupid internal dichotomy. At the moment I get the error since I'm trying to set in some way the output of the comp... 10 Jul 2010 05:10

FindMinimum numerical constraint functions
Hi, I am experimenting with external numerical constraint functions in FindMinimum. Would anyone understand how the second FindMinimum might be made to work in the way of the first? FindMinimum[{Sin[x ] Sin[2 y], {x^2 + y^2 < 3, -x < 0, -y < 0}}, {x, y}] Clear[obj, con]; vars = {x, y}; lenvars = Length[... 8 Jul 2010 21:26

More flexibility in placement of ChartLegend
Hi, I've been working with the Histogram[] function and want to include a legend. According to Mathematica's mystical ways the option Legend does not work with Histogram[]. Instead one needs to use a ChartLegend which has a different syntax and only a few options for placement (Top, Bottom, Center). My ques... 8 Jul 2010 21:26