12,628 reputation
41653
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 6 months
seen 10 hours ago

I am a retired software developer. I retired at the end of 2003 and since then my computer programming activities have been for recreational purposes. I find Mathematica excellent for that.

I started using Mathematica in 1997 (Ver. 3). I am currently using Ver. 9. Although I have used Mathematica for all kinds of stuff, I use it mostly to pursue my long standing interest in Euclidean geometry, both in the classical Greek synthetic form and in the more modern analytical form.


1d
answered Unintentional function memoisation via Dynamic
1d
reviewed Close How to make a mathematica button that duplicates a panel and everything inside it?
1d
reviewed Close Can Mathematica turn (y+x)=x^(1/y) into y=f(x)?
1d
reviewed Close Patterns and replacements
1d
reviewed Close Generic wrapper module
1d
reviewed Close PDF files generated by Mathematica on Windows cannot be viewed on Ubuntu
1d
comment How to solve Stokes equations with non-vanishing boundary condition on two spheres?
I think you get help with the formulation of your problem form Mathematics.SE first and then come back here for help on implementation after the formulation is solid.
1d
reviewed Close How to make an equation to fit measured data
1d
reviewed Close How to solve Stokes equations with non-vanishing boundary condition on two spheres?
1d
answered Partitioning a list and gathering statistics on the distribution of values across partitions
1d
revised Partitioning a list and gathering statistics on the distribution of values across partitions
General clean-up
1d
revised Partitioning a list and gathering statistics on the distribution of values across partitions
edited tags
1d
comment Open a pre-existing CDF file from a stand-alone CDF file
As I understand it, CDF documents that are written to run in the free CDF player cannot access the file system of the computer they are running on. This is a matter of system security.
1d
comment How do I constrain movement for lists of Locators using 2nd argument of Dynamic?
To clarify the point of my previous comment, the reported behavior is not a property peculiar to locators, but applies to any dynamic graphic.
1d
comment How do I constrain movement for lists of Locators using 2nd argument of Dynamic?
The behavior you describe is general to expressions displayed dynamically. For example, if you create a 3D graphics object, evaluate it, rotate the object in the output image with the mouse, and delete the output, when you re-evaluate the 3D graphic, the new output image appears in the rotated position of the deleted image.
1d
reviewed No Action Needed How to solve Stokes equations with non-vanishing boundary condition on two spheres?
2d
reviewed Reviewed Parallel evaluation and memory use
2d
reviewed Looks Good Results of ArgMax as a function of a parameter with InterpolatingFunctions
2d
comment Need to create a function to generate all permutations of Range[$n$]
14! is a rather large number, so I understand why you might not want to store all the permutations in memory. However, even if you accomplish your goal of generating the permutations one-by-one, how long do you think it will take to score more than 87 billion lists of 14 integers?
2d
revised Results of ArgMax as a function of a parameter with InterpolatingFunctions
Improved formatting