20,846 reputation
42568
bio website none
location Ann Arbor, MI
age 76
visits member for 2 years
seen 3 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 its classical Greek synthetic form and in its more modern analytical/transformational form.


Oct
27
revised NDSolve with a constant
I know the symbolic integral from mathematica notebook doesn't appear well here that's why it is preferable to use Integrate function.
Oct
27
reviewed No Action Needed I'm trying to make an internet radio alarm clock
Oct
27
revised Hatched filling for ListLinePlot
Improved formatting
Oct
27
reviewed No Action Needed Hatched filling for ListLinePlot
Oct
26
revised Control size of formula in a gridbox
edited title
Oct
26
revised Fractions formatting in Column / Grid
Made English more idiomatic
Oct
26
revised How to build a constant Graphics object
added 8 characters in body
Oct
26
comment Second order differential equation with boundary conditions solving repeatedly
1) ClearAll; accomplishes nothing; maybe you want Clear["Global*"]. 2) Each of your definitions of pcw` overrides the previous one, so that only the last definition pcw[x_] := (W + x)/(2*W) remains in effect at the end. Did you intend that?
Oct
26
reviewed No Action Needed Second order differential equation with boundary conditions solving repeatedly
Oct
26
comment Poets of the 19th century
@belisarius. Don't think Joe Stalin qualifies. His poetic work was confined to the 20th century.
Oct
26
comment Poets of the 19th century
Love the title.
Oct
26
revised Solving/simplifying a trig expression
Major clean-up
Oct
26
revised Solving/simplifying a trig function
Routine clean-up
Oct
26
revised Automatically discover the class of an arbitrary matrix
Routine clean-up
Oct
26
reviewed Leave Closed Mathematica 10 is shuttingdown many times
Oct
24
comment Fourier series on Wolfram alpha
Try asking on the Wolfram Community site
Oct
24
answered Selecting every n-th element from a list
Oct
24
revised Selecting every n-th element from a list
Routine clean-up
Oct
24
revised MapThread problem
Added brief preface to code example
Oct
24
revised MapThread problem
Minor clean-up