20,294 reputation
42467
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 11 months
seen 56 mins 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 its classical Greek synthetic form and in its more modern analytical/transformational form.


Jul
11
answered Inverting matrix of unknown size
Jul
11
revised Inverting matrix of unknown size
edited tags
Jul
11
revised Inverting matrix of unknown size
Improved formatting
Jul
11
comment Why is Return not forcing an exit from my function?
@Nasser. As someone who spent many years coding in Common Lisp, I don't share your view of Catch and Throw as being to restricted to handling exceptions, although that is certain a good use of them. I admit you have found (obscure) documentation for Return with a 2nd arg, but you can hardly expect the average Mathematica to be aware of it.
Jul
10
revised Why is Return not forcing an exit from my function?
Major clean-up
Jul
10
answered Why is Return not forcing an exit from my function?
Jul
10
reviewed Close Combining Plot and ListPlot in a manipulation
Jul
10
reviewed Looks OK Combining Plot and ListPlot in a manipulation
Jul
10
answered Will Version 9 functions all work in Version 10?
Jul
10
revised Will Version 9 functions all work in Version 10?
added 8 characters in body; edited title
Jul
10
revised SemanticImport mis-interprets CSV
Improved formatting
Jul
10
revised Combining Plot and ListPlot in a manipulation
Improved formatting; edited title
Jul
10
answered Combining Plot and ListPlot in a manipulation
Jul
10
reviewed Close Moving two Spheres in the Opposite Direction
Jul
10
reviewed Close Bug in NDSolve (Mathematica 9.0.1)?
Jul
10
reviewed Close Positions of a string in a list
Jul
10
reviewed Close Assumption for all the notebook
Jul
10
reviewed Close Assigning a given value if a function returns an error
Jul
10
reviewed Reviewed How to color edges of a graph which has multiple edges connecting certain vertices
Jul
10
revised How to color edges of a graph which has multiple edges connecting certain vertices
Minor clean-up