23,667 reputation
42672
bio website none
location Ann Arbor, MI
age 77
visits member for 2 years, 5 months
seen 7 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. My main reason for joining StackExchange is to participate in Mathematica.SE. I enjoy answering question when I can, but I also enjoy working at making the site a better place to visit.

I started using Mathematica in 1997 (Ver. 3). I am currently using Ver. 10.0.2. 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.


7h
revised How can I solve my easy system of equations?
Fixed typo
7h
revised Plot gives different result than direct evaluation (Plot[f[x]] obtains answer while f[x] fails)
deleted 16 characters in body
7h
revised Laplace PDE in a polar coordinate system
Routine clean-up
16h
revised Keyboard shortcut conflict
improved question formatting; made English more idiomatic
16h
revised How can I get the inverse of my function?
added 1 character in body
16h
revised Select sub-lists of common length from a list
added 1 character in body
16h
revised Select sub-lists of common length from a list
Added a second answer
16h
revised Select sub-lists of common length from a list
revised answer to fit the revised question
17h
revised Package Function Confusion
Improved formatting
17h
revised Find out domain after change of variable in integral of d dimensions
Improved formatting
17h
revised How can I solve my easy system of equations?
Minor clean-up
19h
revised How can I get the inverse of my function?
Routine clean-up
19h
revised Difficulty with Manipulate that has same variables as other code lines in a notebook
Added control definition previously omitted
20h
revised FilePrint doesn't print file when running on Wolfram Programming Cloud
improved title
20h
revised FilePrint doesn't print file when running on Wolfram Programming Cloud
Improved formatting
1d
revised Why won't Select work on my Dynamic values?
Added simplified version of answer
1d
revised Why won't Select work on my Dynamic values?
edited tags; edited title
1d
revised Select sub-lists of common length from a list
added 2 characters in body
1d
revised Difficulty with Manipulate that has same variables as other code lines in a notebook
Corrected error
1d
revised How to code a For-loop within Interval correctly?
added 32 characters in body