111 reputation
5
bio website sdragons.org
location Boise, ID
age 64
visits member for 1 year, 5 months
seen Sep 30 '13 at 14:56

Started hacking in 1975. Haven't stopped. Currently happiest in Perl, Lisp and C/C++. Have done well writing interfaces for chess engines. Use chess as a way to learn a new (to me) language.

Least I forget (and I did :) ) I started TeX-ing after returning from the 2nd West Coast Computer Faire. I spent a fair amount of time talking to a fellow hacker who was porting TeX to an 8-bit environment. Don't remember if he succeeded or not (memory may not be the first to go, but go it does) but I do remember that I owned a PDP-11/23 at that time and I believe that DECUS had a usable version. Primary problem was that this was a bit before the arrival of either Laser Printers or Postscript. But once all of the necessary ingredients were put together I fell into the land of good looking documents. I have to say that it helped that my Father-In-Law owned and used two Franklin printing presses and was kind enough to let me play---good old days indeed.


Aug
1
awarded  Editor
Aug
1
revised A question about derivatives (cubics)
Reformatted to match Mathematica usage (i.e. lower-case)
Aug
1
comment A question about derivatives (cubics)
Regarding the need for differentials, a generalization of a Newton fractal is Zn+1 = Zn - a p(Zn)/p'(Zn) hence the need. I suppose my question was I correct in selecting for x in the first instance and for y in the second?
Jul
30
comment A question about derivatives (cubics)
@ThiesHeidecke I've been working with Complex Analysis with Mathematica which has been helpful. I'll take a look at Needham---always nice to expand my bookshelf!
Jul
30
awarded  Custodian
Jul
30
reviewed Approve A question about derivatives (cubics)
Jul
30
comment A question about derivatives (cubics)
Hadn't know the upper/lower case convention. Do now. That noted that was not the part that I'm having problems with :)
Jul
30
awarded  Student
Jul
30
asked A question about derivatives (cubics)
Jul
25
awarded  Supporter
Jul
19
awarded  Autobiographer