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


5h
revised Explain the difference between ViewPoint and ViewVector?
deleted 13 characters in body
5h
revised Removing a ProgessIndicator when no longer needed
General clean-up
15h
revised Shift text upwards in graphics so characters with descenders clear horizontal lines
edited title
15h
revised Derive a PDE from other PDEs
Made English more idiomatic.
15h
revised Shift text upwards in graphics so characters with descenders clear horizontal lines
Added code that produced the graphics
1d
revised Shift text upwards in graphics so characters with descenders clear horizontal lines
added 71 characters in body
1d
revised Displaying primes as a 3D array of spheres
edited title
1d
revised Displaying primes as a 3D array of spheres
General clean-up
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
2d
revised Results of ArgMax as a function of a parameter with InterpolatingFunctions
Improved formatting
2d
revised Need to create a function to generate all permutations of Range[$n$]
General clean-up
2d
revised Counting the number of instances of one sub-string within a given string within a lower- and upper-bound gap of a second sub-string
edited title
2d
revised How to produce functions
edited tags
2d
revised Minimize solution to linear system with singular system matrix
Improved formatting
2d
revised DSolve failing to solve second-order ODE with two boundary conditons
edited title
2d
revised DSolve failing to solve second-order ODE with two boundary conditons
Improved formatting
2d
revised How to change the appearance of a group opener?
edited title
2d
revised How can I prevent a Plot expression from evaluating points forbidden by its RegionFunction?
edited title
2d
revised Testing the Erdos square free conjecture
General clean-up