Re: [sage-combinat-devel] implementing covering arrays

2023-03-02 Thread David Joyner
being approved by some of the original implementers of the OA >> source code. >> >> thanks >> brett >> On Tuesday, May 31, 2022 at 3:56:08 PM UTC-4 David Joyner wrote: >> >>> On Mon, May 30, 2022 at 2:35 PM brett stevens >>> wrote: >&g

Re: [sage-combinat-devel] implementing covering arrays

2022-05-31 Thread David Joyner
On Mon, May 30, 2022 at 2:35 PM brett stevens wrote: > > Myself and my M.Sc. student Aaron Dwyer are interested in adding covering > arrays to sagemath in the design theory code. We have been reviewing the > orthogonal array code as guidance and have some questions for > sage-combinat-devel co

Re: [sage-combinat-devel] Image of a permutation

2020-03-08 Thread David Joyner
On Sun, Mar 8, 2020 at 5:13 AM David Joyner wrote: > > > On Sun, Mar 8, 2020 at 4:58 AM Samuel Lelièvre > wrote: > >> Dear sage-combinat-devel, >> >> Please share any insight on this question >> about the image of a permutation: >> >> htt

Re: [sage-combinat-devel] Image of a permutation

2020-03-08 Thread David Joyner
On Sun, Mar 8, 2020 at 4:58 AM Samuel Lelièvre wrote: > Dear sage-combinat-devel, > > Please share any insight on this question > about the image of a permutation: > > https://groups.google.com/d/msg/sage-devel/kk1C8LrSOTU/8W1r7LIPAgAJ > > I agree with Michael O, a permutation is a bijection, so

[sage-combinat-devel] Re: Review needed for some combinatorial constructions

2014-01-04 Thread David Joyner
On Tuesday, December 24, 2013 6:22:27 AM UTC-5, Nathann Cohen wrote: > > Hellooo everybody !!! > > I send this email because I want to add new stuff to our combinat/designs/ > folder, and I really need some help to review patches. These are > constructions of combinatorial designs, i.e. SOo

Re: [sage-combinat-devel] Re: [sage-devel] Re: use Sage!

2013-06-03 Thread David Joyner
On Mon, Jun 3, 2013 at 12:41 PM, William Stein wrote: ... > I think a review process, editorial board, and useful reviews/rankings > on Amazon.com are starting to matter more to people than "it's published by > Springer (or O'Reilly)". These are things we can accomplish > together, and it will

Re: [sage-combinat-devel] Plotting permutations

2012-04-24 Thread David Joyner
On Tue, Apr 24, 2012 at 3:46 AM, Nathann Cohen wrote: > Helloo everyody !!! > > I am writing a patch for the recognition of Permutation graphs (and > comparability graphs, actually), and I thought that it would be nice > to have some way to plot the permutations built this way. Given a > permu

Re: [sage-combinat-devel] class functions and group actions

2012-01-23 Thread David Joyner
On Mon, Jan 23, 2012 at 1:11 PM, Vincent Delecroix <20100.delecr...@gmail.com> wrote: > Hello, > > I'm looking at what I would like to do in Cernay, and I found new > things about groups and group actions... but perhaps some of the stuff > is implemented somewhere. I will complete the wiki on that

Re: [sage-combinat-devel] Re: Steiner triples

2010-04-28 Thread David Joyner
sorry this got stuck in my drafts folder! it is probably too late now, but see below for my reply On Sun, Apr 18, 2010 at 11:11 AM, Nicolas M. Thiery wrote: >        Dear Nathann, dear David Joyner, > > On Sun, Apr 18, 2010 at 04:54:07PM +0200, Nathann Cohen wrote: >> Th

Re: [sage-combinat-devel] Happy Ada Lovelace Day

2010-03-25 Thread David Joyner
On Thu, Mar 25, 2010 at 4:15 AM, Minh Nguyen wrote: > Hi folks, > > I apologize for this belated celebration note. > > March 24th of each year is observed as Ada Lovelace Day [1]. It is an > international celebration of the achievements of women in science and > technology. The daughter of the Eng

Re: [sage-combinat-devel] Publications...

2010-02-13 Thread David Joyner
On Sat, Feb 13, 2010 at 12:30 PM, Minh Nguyen wrote: > Hi Florent, > > On Sun, Feb 14, 2010 at 4:25 AM, Florent Hivert > wrote: > > > >> Should we put there our publications with a link from sage's related >> publications page [3] or put our publication directly there ? I personally vote for a