18,619 reputation
41963
bio website none
location Ann Arbor, MI
age 76
visits member for 1 year, 10 months
seen 19 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.


Aug
14
revised Test a wooden board's vibration mode
Improved formatting
Aug
14
revised Why am I getting a kernel crash on Chop?
added 2 characters in body
Aug
14
revised Why am I getting a kernel crash on Chop?
Minor clean-up
Aug
14
comment Get rid of “Testing Notebook” toolbar
I think this is a glitch, too. I have encountered this behavior with other kinds of templated notebooks as well.
Aug
14
comment Avoid creation of OwnValues when inserting transformation rules into Experimental`OptimizeExpression
@Sander. Experimental`OptimizeExpression is doing nothing for you. It is intended to optimize code for compilation. I see nothing about compilation in your question. Forget about Experimental`OptimizeExpression. I mean this sincerely and in your best interests.
Aug
14
comment Avoid creation of OwnValues when inserting transformation rules into Experimental`OptimizeExpression
@Sander. You should use replacement rules inside a scoping construct to get what you want. Mr.Wizard did not use Set. I did not use Set. You should not use Set.
Aug
14
comment Avoid creation of OwnValues when inserting transformation rules into Experimental`OptimizeExpression
@Sander. Your problem has nothing to do with Experimental`OptimizeExpression. That is a complete irrelevancy. It has to do with the way you use Set. You would get the same results with f[list1_, list2_] := {list1 /. Rule -> Set, list2 /. Rule -> Set}
Aug
14
comment Faster code for solving an equation with parameters
To quick things. 1) Don't use SetDelayed ( := ) to compute q, use Set instead. q is a constant and doesn't need to evaluated over and over again as you iterate through your loop. Define it once and for all with q = InverseCDF[GammaDistribution[alpha, 1], (1 - theta)]. 2) Don't write slow procedural code to solve your equation. Use one of Mathematica's built-in solvers to do it for you.
Aug
14
revised Faster code for solving an equation with parameters
edited tags; edited title
Aug
14
reviewed Leave Open Quartic equation
Aug
14
comment How to obtain non-trivial solution of equal ratios
@xclassmechluv. Please stop asking extensions to your question in comments. Either formulate a new question referring to this one, or edit your question so it includes the extensions. You chances for getting the additional information you seek will be much better.
Aug
14
comment Missing functions in the Raspberry Pi V10 release
When I evaluate Information["*"] in V10 on OS X, I find all the symbols in your Pi-exclusive list.
Aug
14
comment Avoid creation of OwnValues when inserting transformation rules into Experimental`OptimizeExpression
Really, if you pass your transformation rules into a function and do the transformation there, the transformation rules will be preserved at top-level. Have you tried such an approach?
Aug
14
revised How to obtain non-trivial solution of equal ratios
edited body
Aug
14
revised How to obtain non-trivial solution of equal ratios
Added an example
Aug
14
comment How to obtain non-trivial solution of equal ratios
@Artes. Of course it's an answer. "... not the answer" is an English idiom for "not the only answer". It is a short form of "it's an answer, but not the answer".
Aug
14
revised How to obtain non-trivial solution of equal ratios
edited title
Aug
14
answered How to obtain non-trivial solution of equal ratios
Aug
14
revised How to obtain non-trivial solution of equal ratios
Improved formatting
Aug
14
reviewed No Action Needed How to obtain non-trivial solution of equal ratios