On Sat, Jan 14, 2017 at 4:48 PM, Sergey Shpectorov <s.shpecto...@bham.ac.uk> wrote: > I am one of the authors of braid and mapclass, but I cannot answer why > sage tries to load braid. In 2012 there was some talk about porting braid > to sage and I believe that perhaps David Joyner wanted it ported. At least > his name was mentioned in the correspondence. Dima Pasechnik also played > some role. Dima, do you remember anything? >
I sent files to Max and Alexander by separate email. They will be posted on github eventually. > Sergey > ________________________________________ > From: forum-boun...@gap-system.org [forum-boun...@gap-system.org] on behalf > of Alexander Konovalov [alexander.konova...@st-andrews.ac.uk] > Sent: Saturday, January 14, 2017 8:19 PM > To: Max Horn > Cc: z0608224008...@rezozer.net; GAP Forum > Subject: Re: [GAP Forum] GAP package: braid > >> On 14 Jan 2017, at 20:10, Max Horn <m...@quendi.de> wrote: >> >> Dear Jerome, >> >> for some reason I only received your email yesterday -- presumably it was >> stuck in mailing list moderation? Anyway, better a late answer than non at >> all :-). > > Yes - I've looked at moderating requests yesterday and discovered it there. >> >>> On 07 Dec 2016, at 16:57, Jerome BENOIT <z0608224008...@rezozer.net> wrote: >>> >>> Hello Forum, >>> >>> I have just noticed that Sage[Math] tries to pre-loads the GAP package >>> `braid', >>> which is not present in the GAP webpage. I guess it is an old GAP package. >>> Can anybody confirm this ? Does anybody knows whether or not this GAP >>> pachage >>> has been replaced/supersedeed ? >> >> To the best of my knowledge, GAP never bundled a "braid" package. There is >> an undeposited "package" with that name, see >> <https://www.gap-system.org/Packages/undep.html>, but (a) that never was >> shipped together with GAP, > > Yes, that's true. > > In addition, the MapClass package > (https://www.gap-system.org/Packages/mapclass.html) > redistributed with GAP says that it is "an extension of the Braid package for > GAP" > but it does not require Braid to work. > >> and (b) as far as I can tell, it is just a bunch of GAP source files, not an >> actual GAP package (i.e. no PackageInfo.g, init.g, read.g etc.). Well, that >> said, there is also a broken link which purports to contain a "proper" >> package, but it points to a location on www.opensourcemath.org, and that >> domain expired and was taken over by a domain grabber placing ads on it. >> >> Anyway, if you want to find out why Sage tries to load that package, perhaps >> ask them? And/or query their version control system to see when (and by >> whom) the code to load the package was added. > > Perhaps authors of Braid and MapClass, if they read the Forum, could give > more light too. > > HTH > Alexander > > > > _______________________________________________ > Forum mailing list > Forum@mail.gap-system.org > http://mail.gap-system.org/mailman/listinfo/forum > > _______________________________________________ > Forum mailing list > Forum@mail.gap-system.org > http://mail.gap-system.org/mailman/listinfo/forum _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
