12,688 reputation
41653
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 6 months
seen 2 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. 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
24
revised Function giving negative value when it should be positive
General cleanup
Apr
23
revised Is there a way to show the details of a numerical computation?
Improved formatting
Apr
23
comment How can I import sound from within a Manipulate expression?
Do you mean "I want to import sound from a file, record, and export sound."?
Apr
23
revised How can I import sound from within a Manipulate expression?
General cleanup
Apr
23
revised Caching of Graph Graphics
Corrected capitalization
Apr
23
reviewed Close Help with interactive plot?
Apr
22
revised How can I create a new tables out of a table and plot it
General cleanup
Apr
22
reviewed Close Problem with simple DSolve
Apr
22
reviewed Edit Stereographic Projection
Apr
22
revised Stereographic Projection
edited body
Apr
22
reviewed Reviewed Plotting a convolution fails
Apr
22
revised Plotting a convolution fails
Improved formatting
Apr
21
comment Apart may use Padé method: what's that?
Shouldn't this be asked on Math.SE?
Apr
21
comment How do I define the domain of a function?
3D plots, by the basic syntax of Plot3D, are restricted to a rectangular domain x ∈ {x_min, x_max} and y ∈ {y_min, y_max}. If doesn't work for you, please tell us what is the shape of the domain you have in mind.
Apr
21
reviewed Close Cannot convert units in Mathematica
Apr
21
reviewed Reviewed How do I define the domain of a function?
Apr
21
revised How do I define the domain of a function?
Improved formatting
Apr
21
revised Why do vertex labels disappear when I edit with drawing tools?
edited title
Apr
21
revised Plot3D fails to display a function I've defined
Corrected typo
Apr
21
revised Plot3D fails to display a function I've defined
Improved formatting