An author to GAP's package "braid" suggests to switch to an officially GAP-supported package "mapclass", which offers a superset of the functionality. Should we do this?
Dima On 2012-05-29, Dima Pasechnik <dimp...@gmail.com> wrote: > ---------- Forwarded message ---------- > From: Dmitrii (Dima) Pasechnik <d...@ntu.edu.sg> > Date: 29 May 2012 12:29 > Subject: Re: [GAP Forum] problem with AutomorphismGroup > To: Markus Szymik <markus.szy...@gmail.com> > Cc: Alexander Konovalov <al...@mcs.st-andrews.ac.uk>, GAP Forum ><fo...@gap-system.org> > > > Dear Markus, > Thanks. > I can confirm that this is a bug in in Sage's > gap_packages-4.4.12.p1. More precisely, > one of the GAP packages bundled there, namely > the one called "braid" (listed on > http://www.gap-system.org/Packages/undep.html), version 1.0, > overwrites GAP's > Fingerprint function (hmm, is it a method?) > with something of its own. > There is a later version of this package, 1.1. > However, it still has the same bug. > > OK, we'll fix this in Sage in some way, most probably by patching "braid". > > Best, > Dmitrii > > PS. here how to reproduce this: > > sage: gap_console() > GAP4, Version: 4.4.12 of 17-Dec-2008, i686-apple-darwin10.8.0-gcc > gap> AutomorphismGroup(DihedralGroup(8)); > Function: number of arguments must be 1 (not 2) at > tup := Fingerprint( G, H ); > called from > NormalizingReducedGL( spec, 1, first[2], M ) called from > AutomorphismGroupSolvableGroup( G ) called from ><function>( <arguments> ) called from read-eval-loop > Entering break read-eval-print loop ... > you can 'quit;' to quit to outer loop, or > you can replace the argument list <args> via 'return <args>;' to continue > brk> > gap> > gap> LOADED_PACKAGES; > rec( ctbllib := [ > "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/ctbllib", > "1.1.3", "CTblLib" ], > factint := [ > "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/factint", > "1.5.2", "FactInt" ], > gapdoc := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/GAPDoc", > "1.2", "GAPDoc" ], > laguna := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/laguna", > "3.5.0", "LAGUNA" ], > sonata := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/sonata", > "2.4", "SONATA" ], > guava := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/guava", > "3.9", "GUAVA" ], > grape := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/grape", > "4.3", "GRAPE" ], > design := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/design", > "1.4", "DESIGN" ], > toric := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/toric", > "1.6", "toric" ], > braid := [ "/usr/local/src/sage/sage-5.0/local/lib/gap-4.4.12/pkg/braid", > "1.0", "braid" ] ) > gap> > > #Apparently installation of gap_packages forces GAP to load these > #packages; note that > gap> gap> AUTOLOAD_PACKAGES; > [ "ctbllib", "factint", "gapdoc", "laguna" ] > # does not have "braid" listed. > > I am not entirely sure what's going on. > -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
