[sage-devel] Re: Sage build from source fails on OS X 10.9

Building with homebrew in /usr/local is not supported and likely to fail. Move /usr/local out of the way and try again. On Sunday, August 9, 2015 at 11:53:51 PM UTC+2, Jeroen Sijsling wrote: > > Dear all, > > Today I tried to build Sage from source, for now just for the heck of it, > but also

Re: [sage-devel] Re: Tarball uploads

On 08/09/2015 07:09 AM, Volker Braun wrote: > Yes, though we don't have a certificate for *.sagemath.org. Besides the > cost, you also need to periodically renew etc. Though I'm hoping that > Let's Encrypt (https://letsencrypt.org) will fix that. Launching this > September... Just use a self-signe

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Hello, Let me tell you that T. Coulbois already implemented Bestvina-Handel algorithm (for general automorphisms of the free group): https://github.com/coulbois/sage-train-track There are a lot of possible optimization and improvement in the documentation. But it works well (and has been int

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Note: I copied these remarks to the trac ticket . Den torsdag den 6. august 2015 kl. 17.01.55 UTC+2 skrev fuglede@gmail.com: > > In fact, when matching the return values of Link.jones_polynomial() with > the one I posted, I ran into some pr

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Cool, i didn't know about it. I just knew about Toby Hall program (which, for several reasons, cannot be included in sage). It would be nice to produce a picture of the train track of a braid ;) El domingo, 9 de agosto de 2015, 14:03:09 (UTC+2), fuglede@gmail.com escribió: > > There could o

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

There could of course be some point to cooking up a new implementation from scratch, but if I were to do it, I'd probably just wrap this library (note that main() in train.cpp needs a few changes to be run ad hoc, but I've had some

[sage-devel] Re: Tarball uploads

Yes, though we don't have a certificate for *.sagemath.org. Besides the cost, you also need to periodically renew etc. Though I'm hoping that Let's Encrypt (https://letsencrypt.org) will fix that. Launching this September... On Sunday, August 9, 2015 at 12:57:50 PM UTC+2, mmarco wrote: > > I t

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

I also spent some time trying to figure out how to implement Bestvina -Handel algorithm. But i am not really an expert on that, so i desisted after some time. If you want to work on that, i would definitely try to help. I am so happy to have a braid/knot theory specialist on board. El domingo,

[sage-devel] Re: Tarball uploads

I think that, since it involves sending login information, it should use https instead of http El sábado, 8 de agosto de 2015, 21:22:18 (UTC+2), Volker Braun escribió: > > In order to streamline updating third-party tarballs I've written a small > web app where you can directly upload them. Th

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Alright, I'll do that soon. The code is set up to be copy-pasted more or less directly; in particular I think all of the functions could be useful as methods but that's a matter of opinion. Den søndag den 9. august 2015 kl. 12.47.34 UTC+2 skrev mmarco: > > Oh, i forgot to say: please open a tick

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Having a libhomfly wrapper would certainly be nice. More generally, the Mathematica KnotTheory` package allows, iirc, for the input of a general R-matrix and spits out braid group representations. Or maybe it's just for the ones tha

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

Oh, i forgot to say: please open a ticket with your code added to the braid class. It is definitely a nice addition. I would be happy to review it. write your methods inside the class definition, and consider which ones should be public and which ones should be hidden to the user. -- You recei

Re: [sage-devel] Methods for evaluating the Jones representations of braids and the Jones polynomials of the closure

I wouldsay that the problems in your examples has to do with the existence of completely isolated trivial components. Since we make the computation with the lists of crossings, all components with no crossings involved are ignored. Besides, the first example has no crossings at all (which makes

Re: [sage-devel] Archive old-style spkg files [all of you can help to classify them]

I've removed the search-old-spkg bug/misfeature at http://trac.sagemath.org/ticket/19004 (needs review) Also adds useful diagnostics if the package name cannot be found: $ sage -i python Attempting to download package python Error: could not find a package matching python Try 'sage --pack

[sage-devel] Re: DiGraph, int vs. sage Integer

> > Is this a bug? If not, what is the rationale behind this? > What I know is that it was done deliberately, and I do not know the rationale. I can "guess" that it was because "you pay for labels", and that Robert Miller thought that there was no reason to pay for them when the vertices were