21,056 reputation
42568
bio website none
location Ann Arbor, MI
age 77
visits member for 2 years, 1 month
seen yesterday

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
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
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
Oct
24
answered MapThread problem
Oct
24
revised How do I remove single-character whitespace between words, leaving multiple, contiguous, whitespace characters unchanged?
Made English more idiomatic
Oct
24
comment Iterations with Table?
This question appears to be off-topic because it is not formulated in English.
Oct
24
reviewed Reviewed Expanding Function Based on Congruence Classes
Oct
24
revised Expanding Function Based on Congruence Classes
Improved formatting
Oct
24
revised Limit not giving expected result
Improved formatting