21,218 reputation
42568
bio website none
location Ann Arbor, MI
age 77
visits member for 2 years, 2 months
seen 18 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
12
answered Function of arguments given in non-fixed order
Oct
12
revised Function of arguments given in non-fixed order
Routine clean-up
Oct
12
revised Signed power set of a list
Routine clean-up
Oct
12
reviewed Reject Computing the fundamental matrix and its monodromy matrix
Oct
12
reviewed Approve Exported animated gif with matrices will not work?
Oct
12
reviewed Approve Rearranging a matrix
Oct
12
reviewed Approve Matrix Operation
Oct
11
revised Fine tuning compiled code that computes dilogarithm function
added 146 characters in body
Oct
11
comment Keyboard shortcut for changing style of selected text (NOT the whole cell)
This would appear to be platform dependent. Command+9 still styles a selection within a text cell in V10 running on OS X.
Oct
11
comment How to use the same PlotRange and the same PlotLabel size for a sequence of Graphics?
I think the 'clarification' given in the update makes this question too vague to be answered.
Oct
11
reviewed Reviewed How to create an hexagonal lattice structure
Oct
11
revised How to create an hexagonal lattice structure
Routine clean-up
Oct
11
answered How to use the same PlotRange and the same PlotLabel size for a sequence of Graphics?
Oct
11
revised How to use the same PlotRange and the same PlotLabel size for a sequence of Graphics?
Routine clean-up
Oct
11
revised Structure of KernelMixtureDistribution and SmoothKernelDistribution
Routine clean-up
Oct
11
comment Counting the number of instances where items at the same position in two matrices are equal?
The built-in function you are looking for is Count. Apply it like so: Count[m1 - m2, 0 | 0., {2}]
Oct
11
comment Counting the number of instances where items at the same position in two matrices are equal?
Count[m1 - m2, 0 | 0., {2}] (variant of Kuba comment made to the question) might be an improvement.
Oct
11
revised Counting the number of instances where items at the same position in two matrices are equal?
Minor clean-up
Oct
11
reviewed No Action Needed Counting the number of instances where items at the same position in two matrices are equal?
Oct
11
revised Finding volume of a segment
Routine clean-up