18,689 reputation
41963
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 10 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.


1h
revised Advanced SQL-type select statements (filtering) on Datasets
better naming
2h
revised Advanced SQL-type select statements (filtering) on Datasets
Improved formatting
3h
revised Frame ticks not showing in ListLogLogPlot
Middling clean-up
3h
revised Plotting spherical surfaces
edited title
3h
revised Import iTunes xml data and convert it into a dataset or table
Middling clean-up
3h
revised CPU usage remains at 13% even after I quit the kernel
Minor clean-up
12h
revised Getting message DSolve::conarg:
Major clean-up
23h
revised Volume enclosed by two surfaces of revolution
edited title
23h
revised Install issue: Mathematica 9 on Ubuntu 13.10
added 33 characters in body
1d
revised Conceal GUI source code
deleted 19 characters in body
1d
revised Menu item “Interrupt Evaluation…” missing in V10
Minor clean-up
1d
revised Why does WordData fail to find “PartsOfSpeech” when given a list of two words?
Answered issue raised in comment
1d
revised Why does WordData fail to find “PartsOfSpeech” when given a list of two words?
Answered issue raised in comment
1d
revised Why does WordData fail to find “PartsOfSpeech” when given a list of two words?
added 9 characters in body; edited tags; edited title
1d
revised Why does WordData fail to find “PartsOfSpeech” when given a list of two words?
added 314 characters in body
1d
revised How to solve two non-linear equations in two variables
Major clean-up
1d
revised Sum rule in integration not working
added 5 characters in body; edited title
Aug
27
revised Some global variables are defined even at the start of a fresh session
Middling clean-up; edited tags
Aug
27
revised Problem with general assumptions
Middling clean-up
Aug
27
revised Specifying initial conditions for a PDE
Improved formatting