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31034
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location Ann Arbor, MI
age 75
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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 the classical Greek synthetic form and in the more modern analytical form.


Apr
8
revised Integral evaluation taking too long
General cleanup
Apr
7
revised 6x6 matrix NullSpace
Improved formatting
Apr
7
revised 6x6 matrix NullSpace
General cleanup
Apr
7
revised Functions, Options and Symbols
Clarification
Apr
7
reviewed Looks Good Matrix Rotation
Apr
7
reviewed No Action Needed Opening notebooks from Mathematica 6 in Mathematica 9 without re-evaluating
Apr
6
revised How to replace variables in an expression?
Improved formatting
Apr
6
comment Interpolation of an upper-triangular list
Please do not convey your code in a comment. Always add to your question by editing the question. Because this is first post, I have done it for you.
Apr
6
reviewed Reviewed Interpolation of an upper-triangular list
Apr
6
revised Interpolation of an upper-triangular list
General cleanup; transferred code from comment
Apr
5
revised Parameters for the CIE XYZ Color Space in Mathematica
General cleanup
Apr
5
reviewed Close Better method for creating a tuple out of two lists
Apr
5
reviewed Close How to construct a new list made from a function that operates on two lists
Apr
5
reviewed Reviewed How to calculate mix of 4 colors defined in CIELAB L*a*b* model?
Apr
5
revised How to calculate mix of 4 colors defined in CIELAB L*a*b* model?
General cleanup
Apr
5
reviewed Reviewed Cover a rectangle with size constrained rectangular regions
Apr
5
revised Why don't I see all the grid lines in my combined contour plots?
Made English more idiomatic.
Apr
5
reviewed Looks Good Order list of monomials by degree (Pascal's Triangle)
Apr
5
reviewed Looks Good How to set PlotLegend Number Format
Apr
5
reviewed Close String replacement of special characters