23,492 reputation
42672
bio website none
location Ann Arbor, MI
age 77
visits member for 2 years, 5 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. My main reason for joining StackExchange is to participate in Mathematica.SE. I enjoy answering question when I can, but I also enjoy working at making the site a better place to visit.

I started using Mathematica in 1997 (Ver. 3). I am currently using Ver. 10.0.2. 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.


Mar
1
reviewed Looks OK How can I get a list of the positions of the running minima in a list?
Mar
1
reviewed Edit and Reopen How to define a function
Feb
28
reviewed Edit and Reopen List manipulation: Dropping first or last row or column of a matrix
Feb
28
reviewed Close How can I get a list of the positions of the running minima in a list?
Feb
28
reviewed Looks OK Diagonal minors of matrix
Feb
28
reviewed Leave Open Notebook downloaded from web giving error message
Feb
27
reviewed Edit and Reopen Trying to get Arg[1 + I a] -> ArcTan[a]
Feb
27
reviewed Edit Import of data from ODS
Feb
27
reviewed Approve Something interesting about Pi, but something seems amiss
Feb
27
reviewed No Action Needed Calling a function on a variable with parameters
Feb
26
reviewed Leave Closed Translate Maple code into Mathematica
Feb
26
reviewed Edit Transform differential equation to get equilibrium position
Feb
25
reviewed No Action Needed Region projection of multivariable interpolated function
Feb
25
reviewed Reviewed Why does Solve give a wrong solution to an equation?
Feb
25
reviewed No Action Needed NDSolve dependence on initial values
Feb
25
reviewed No Action Needed NDSolve — using a PDE solution in another PDE
Feb
23
reviewed Leave Open How can I make an animated demonstration of the Wigner semicircle distribution?
Feb
22
reviewed Looks OK Function that creates a table from two lists
Feb
22
reviewed No Action Needed Miller-Rabin algorithm
Feb
22
reviewed No Action Needed How to make strong assumptions?