On Tue, Jun 28, 2011 at 11:04 AM, Florent Hivert <florent.hiv...@univ-rouen.fr> wrote: > Hi, > >> With Mike and Anne we are about to finalize an interface with lrcalc: >> >> ------------------------------------------------------------------------------ >> #10333: An interface to Anders Buch's Littlewood-Richardson Calculator lrcalc >> >> The "Littlewood-Richardson Calculator" is a C library for fast >> computation of Littlewood-Richardson (LR) coefficients and products of >> Schubert polynomials. It handles single LR coefficients, products of >> and coproducts of Schur functions, skew Schur functions, and fusion >> products. All of the above are achieved by counting LR (skew)-tableaux >> of appropriate shape and content by iterating through >> them. Additionally, lrcalc handles products of Schubert polynomials. >> >> The web page of lrcalc is: http://math.rutgers.edu/~asbuch/lrcalc/ >> ------------------------------------------------------------------------------ > >> lrcalc weights 500Ko (100Ko of C code + administrative files + >> mercurial repo). It's GLPV2+ with no dependencies. The code is quite >> clean and so far proved to be portable: we used it in MuPAD-Combinat, >> under MacOS, various flavors of Linux, and CYGWIN; tests on solaris >> are welcome! > > One more argument for using it. Having it in standard Sage is a good step > toward getting rid of Symmetrica which often causes problems and is no more > maintained. > >> lrcalc will progressively become a key low-level component for Sage's >> symmetric functions library. This evolution will be simpler if lrcalc >> is always available. >> >> I therefore would like to cast a vote. Should lrcalc become: > > Therefore: > >> [X] A standard spkg >> [ ] An optional spkg
[X] A standard spkg Franco -- -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
