20,771 reputation
42568
bio website none
location Ann Arbor, MI
age 76
visits member for 2 years
seen 7 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.


11h
revised How to generate a chirped signal
Routine clean-up
13h
revised Bug(?) in version 10: Tooltip and ListPointPlot3D
edited tags
14h
revised Manipulate showing the trajectory of a particle
Minor clean-up
14h
revised Why does my code produce NDSolveValue::ndnum?
Improved formatting
1d
revised Nothing happens when I click the mouse clicked on my graphics
Improved formatting
1d
revised How to use a C compiler without having SystemModeler
Minor clean-up
1d
revised ListContourPlot in V10
edited body; edited title
1d
revised Open a .txt file in Mathematica
Minor clean-up
1d
revised How to fix the order in which text appears in an axis label (V7)
Routine clean-up
1d
revised Equation of a transformed ellipsoid
Improved formatting
1d
revised Need help with GRE study question
Routine clean-up
1d
revised Equation of a transformed ellipsoid
Routine clean-up
1d
revised Restrict plot of object to be below a given plane in a ContourPlot3D
Routine clean-up
1d
revised Restrict plot of object to be below a given plane in a ContourPlot3D
Improved formatting
1d
revised Matching a case when one element in a pair is Null
Minor clean-up
2d
revised Plane Geometry Diagrams With Labels
deleted 7 characters in body
2d
revised Mean curvature of Sphere
deleted 14 characters in body
2d
revised How do I generate cross sections of a 3D graphic?
deleted 11 characters in body; edited title
2d
revised Identically styled cells from ToBoxes and Cell do not align
Improved formatting
2d
revised Higher-order, nonlinear differential equation with Initial Values
edited tags