@c --------------------------------------------------------------------
@node Non-commutative libraries, , LETTERPLACE, Non-commutative subsystem
@section Non-commutative libraries
@cindex  Non-commutative libraries
@cindex  Non-commutative LIBs
@cindex  PLURAL LIBs

@sc{Plural} comes with a set of standard libraries. Their content is
described in the following subsections.

Use the @code{LIB} command for loading of single libraries.

@strong{Note:} For any computation in @sc{Plural}, the monomial ordering must be a global ordering.

@menu
* bfun_lib::
* central_lib::
* dmod_lib::
* dmodapp_lib::
* freegb_lib::
* involut_lib::
* gkdim_lib::
* ncalg_lib::
* ncdecomp_lib::
* nctools_lib::
* perron_lib::
* qmatrix_lib::
@end menu

@c as @c lib generates parts of sections, but we need subsections:
@lowersections

@c ----------------------------------------------------------
@node bfun_lib, central_lib, , Non-commutative libraries
@section bfun_lib
@cindex bfun_lib
@cindex bfun.lib

@c lib bfun.lib

@c ----------------------------------------------------------
@node central_lib, dmod_lib, bfun_lib, Non-commutative libraries
@section central_lib
@cindex central_lib
@cindex central.lib

@c lib central.lib

@c ----------------------------------------------------------
@node dmod_lib, dmodapp_lib, central_lib, Non-commutative libraries
@section dmod_lib
@cindex dmod_lib
@cindex dmod.lib

@c lib dmod.lib

@c ----------------------------------------------------------
@node dmodapp_lib, freegb_lib, dmod_lib, Non-commutative libraries
@section dmodapp_lib
@cindex dmodapp_lib
@cindex dmodapp.lib

@c lib dmodapp.lib

@c ----------------------------------------------------------
@node freegb_lib, involut_lib, dmodapp_lib, Non-commutative libraries
@section freegb_lib
@cindex freegb_lib
@cindex freegb.lib

@c lib freegb.lib

@c ----------------------------------------------------------
@node involut_lib,  gkdim_lib, freegb_lib, Non-commutative libraries
@section involut_lib
@cindex involut_lib
@cindex involut.lib

@c lib involut.lib

@c ----------------------------------------------------------
@node gkdim_lib, ncalg_lib, involut_lib, Non-commutative libraries
@section gkdim_lib
@cindex gkdim_lib
@cindex gkdim.lib

@c lib gkdim.lib

@c ----------------------------------------------------------
@node ncalg_lib, ncdecomp_lib, gkdim_lib, Non-commutative libraries
@section ncalg_lib
@cindex ncalg_lib
@cindex ncalg.lib

@c lib ncalg.lib

@c ----------------------------------------------------------
@node ncdecomp_lib, nctools_lib, ncalg_lib, Non-commutative libraries
@section ncdecomp_lib
@cindex ncdecomp_lib
@cindex ncdecomp.lib

@c lib ncdecomp.lib

@c ----------------------------------------------------------
@node nctools_lib, perron_lib, ncdecomp_lib, Non-commutative libraries
@section nctools_lib
@cindex nctools_lib
@cindex nctools.lib

@c lib nctools.lib

@c ----------------------------------------------------------
@node perron_lib, qmatrix_lib, nctools_lib, Non-commutative libraries
@section perron_lib
@cindex perron_lib
@cindex perron.lib

@c lib perron.lib

@c ---------------------------------------------------------
@node qmatrix_lib,  , perron_lib, Non-commutative libraries
@section qmatrix_lib
@cindex qmatrix_lib
@cindex qmatrix.lib

@c lib qmatrix.lib

@c ----------------------------------------------------------
@raisesections