User talk:Arbautjc

From Rosetta Code
Revision as of 13:10, 7 November 2016 by Hout (talk | contribs) (Two formulae invisible in the GAP contribution on Machin-like formulas)

Check this page

Hi Arbautjc, you might want to browse this page from time to time to find out if someone has flagged something you can fix. --Paddy3118 (talk) 17:35, 28 October 2013 (UTC)

Cholesky/Pascal identity

Hi, you wrote "an upper triangular matrix is not a symmetric matrix => the Cholesky decomposition or Cholesky factorization is a decomposition of a Hermitian, positive-definite matrix"

And yet I get: cholesky(pascal_upp(i)) == identity(i)

?? --Paddy3118 (talk) 16:47, 28 April 2015 (UTC)

Updated. --Paddy3118 (talk) 06:20, 2 May 2015 (UTC)

Combinations code for Maxima

Hi Arbautjc, aka Capra H!

Kudos 4 your Maxima code for combinations, it works fine, on maxima, even on moodle (-stack plugin), unless the rest of my code. If I get it 2 work once, I'd probably need a GPL licence like the other moodle stuff. Can you give it an additional licence like GPLv3+ and possibly say so on your Userpage?

I wrote automated math questions btw, like 1/3-1/4=?, it chooses denominators from a combinations-list of (2,3)(2,4)(2,6)(3,..).

Greets from maths, KgV77 (talk) 20:54, 5 September 2016 (UTC)

Combinations#Maxima Rosetta_Code:Copyrights

Two formulae invisible in the GAP contribution on Machin-like formulas

I notice that two of the <math> tagged formulae in the preamble to your GAP contribution:
http://rosettacode.org/wiki/Check_Machin-like_formulas#GAP
are invisible on the majority of browsers. Chrome, IE/Edge, Safari and most other browsers all display the server-side graphic for formulae, and something about two of your <math> tag contents seems to be tripping the MediWiki HTML generator into producing ill-formed display tags for them (zero image height, because, in each case, of a missing semi-colon between two attribute names);
Perhaps these formulae were originally edited on Firefox, which, (installed fonts permitting) uses local MathML processing rather than displaying the graphic file ?
Iterative experimentation with any of the browsers mentioned above should make it possible to find a representation which is visible both on on the majority of browsers, and on Firefox too. Hout (talk) 13:10, 7 November 2016 (UTC)