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location Ann Arbor, MI
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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.


Oct
18
revised How to tell Eigensystem the type of the elements comprising a matrix I would like to diagonalize
Made English more idiomatic
Oct
18
reviewed Leave Open Concisely returning a position in an array with an index variable
Oct
18
revised DSolve returning { } when given my ODE
Routine clean-up
Oct
18
comment Include Formatting Save As .nb to .m
I can not speak for WRI as to why they chose to implement their code editor the way they did, but .nb files have never stored indentation information for input cells.
Oct
18
answered Include Formatting Save As .nb to .m
Oct
18
comment create a function that converts a character string consisting of lowercase letters of the english alphabet to a number
The English alphabet has 26 letters, so how does z end up getting assigned 27?
Oct
18
revised Getting a blank plot when plotting two functions with Plot3D
More clean-up
Oct
18
comment Getting a blank plot when plotting two functions with Plot3D
@Nasser. I think L is supposed to l, which has value 3.
Oct
18
revised Getting a blank plot when plotting two functions with Plot3D
Routine clean-up
Oct
17
revised How can I view piecewise cases considered by Reduce?
Improved formatting
Oct
17
comment What is the best way to flatten a linked list with lists as values?
+1 Your answer is very enlightening. The test I referred to in my comment to the question only looked at ways of flattening the usual linked lists. Flatten and Partition are still good for that. I didn't think to use a bag because I didn't know that bags existed in Mathematica. I would have happily used your AngleBracket idea had I been clever enough to think of it.
Oct
17
reviewed Leave Open How to plot multivariate tabular data
Oct
17
revised How to plot multivariate tabular data
Routine clean-up
Oct
17
reviewed Reject suggested edit on random geometric graph generation problem
Oct
17
comment Request for clarification of Eigensystem::eivn message
You have asked and answered enough questions on this site that you should be aware of the norms for formatting posts that are expected here. Please do a better job of formatting your posts in the future.
Oct
17
revised Request for clarification of Eigensystem::eivn message
Major clean-up
Oct
17
reviewed Reject suggested edit on How to create animated snowfall?
Oct
17
reviewed Looks OK Cases do not return all expected result
Oct
17
comment What is the best way to flatten a linked list with lists as values?
@Algohi. Flattening a linked list of pairs or triples comes up all the time in code involving 2D and 3D geometry. Flattening and re-partitioning is the best way I know to handle this common problem.
Oct
17
comment What is the best way to flatten a linked list with lists as values?
In test I made a couple years ago, your 'cheat' was the fastest method I found. I recommend sticking with it.