[ANNOUNCEMENT] [announcement] updated singular-*-3.1.0-1

Thu May 7 08:30:00 GMT 2009

Version 3.1.0-1 of "Singular" has been uploaded.
About:
SINGULAR is a Computer Algebra System for polynomial computations with
special emphasis on the needs of commutative algebra, algebraic
geometry, and singularity theory.
NEWS and CHANGES in SINGULAR 3-1-0
(You will also find this and more detailed information at
http://www.singular.uni-kl.de/Manual/3-1-0/sing_1575.htm)
 * new coefficients: Z, Z/m, Z/(2^n) (see Rings and orderings)
 * new handling of the default argument in libraries
 (see Parameter list)
 * ESingular updated for emacs 22
 * licences for all parts of SINGULAR clarified (see Preface)
New SINGULAR functions
 * new command: kernel (see kernel)
 * new command: sqrfree (see sqrfree)
 * command changed: the first argument to monitor should be an
 ASCII link. (see monitor)
 * command extended: eliminate: variables to eliminate may also
 be given as intvec. (see eliminate)
Internal Changes
 * handling of large input for std improved
 * interred implemented in a different way
 * kbase honors the attribute "isHomog"
 * jacob accepts modules and matrices
 * gcd over algebraic extensions of the rationals implemented
 in a different way
 * new build target: libsingular.a (for gfan etc.)
 * code variants now depend on CPU type, not OS
 * better test for built-in limits (see Limitations)
 * operator new(size_t,const std::nothrow_t&) now also
 overloaded
New SINGULAR libraries
 * surfex: new version 0.90
 * new library: redcgs.lib
 * new library: tropical.lib
 * new library: polymake.lib
 * new library: sing4ti2.lib
 * new library: decodegb.lib
 * new library: dmodapp.lib
 * new library: bfun.lib global
 * new library: freegb.lib
 * new library: jacobson.lib
 * contributed library: cimonom.lib
 * contributed library: phindex.lib
Changed SINGULAR libraries
 * normal.lib ( normal_lib): changed structure of the result,
 new algorithms have been implemented which improve performance
 * elim.lib ( elim_lib): elim, nselect, select, select1:
 changed syntax
 * homolog.lib: kernel renamed to hom_kernel.
 * matrix.lib ( matrix_lib): new commands for computing
 symmetric/exterior powers/bases
 * surf.lib: new command surfer: interface to program surfer
 * teachstd.lib ( teachstd_lib): spoly works now in non-commutative
 algebras and standard can thus be used there. However, since
 product criterion is a priori not applicable in the
 non-commutative case, one may want to disable it first
 * many changes of names in libraries (to have a more consistent
 naming scheme)
Frank Seelisch
seelisch@mathematik.uni-kl.de
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