2 Aug 2007 17:07
Oliver Wienand <wienand <at> rhrk.uni-kl.de>
2007-08-02 15:07:53 GMT
2007-08-02 15:07:53 GMT
Version 3.0.3-1 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. Changes: The current version 3-0-3 is stabilyzing release, a result of a long beta test and the integration of a lot of small fixess which were on our waiting list for integration. The provided libraries and documentation were revisited. Singular 3-0-3 contains also a lot of new features: Licence: - licence changed: omalloc and MP are now (also) available under GPL; that means that all parts of SINGULAR are licenced under GPL (resp. LGPL). Porting: - factory, libfac, Singular updated for gcc 4.1.x - kernel updated for the optional use of boost. - Singular can now be built as a library. Kernel: - new operator a:b gives an intvec of length b with constant entries a - new command: ( chinrem): lifting via chinese remainder theorem - new command: ( interpolation): ideal of points with given multiplicities - non-commutative kernel subsystem was rewritten in order to support specific algebras more efficiently. Implemented algebras at the moment: super-commutative algebras (in particular exterior algebras). - std et al.: new selection strategy for reductions ( option (length)). - reduce: new strategy for selection and normalization. - simplify slightly changed: does not omit zero polynomial unless specified. Libraries: - new library: compregb.lib : comprehensive Groebner base system - new library: kskernel.lib : kernel of the kodaira-spencer map for irreducible plane curve singularities - new library: modstd.lib : Groebner base computations over the rational numbers via modular computations - new library: noether.lib : Noether normalization of an ideal(not nessecary homogeneous) - new library: atkins.lib : the elliptic curve primality test of Atkin - new library: aksaka.lib : primality testing after Agrawal, Saxena, Kayal - new library: arcpoint.lib : truncations of arcs at a singular point - new library: resgraph.lib : visualization of resolution data. - new library: realrad.lib : computation of the real radical over the rational numbers and extensions thereof - new library: hyperel.lib : divisors in the jacobian of hyperelliptic curves - new library: curvepar.lib : space curves - new library: sagbi.lib : subalgebras bases analogous to Groebner bases for ideals - new library: surfex.lib : visualizing and rotating surfaces - new library: cimonom.lib : determines if the toric ideal of an affine monomial curve is a complete intersection. - sheafcoh_lib: new experimental functions, in particular sheafCohBGG2 - library ncall.lib merged into all_lib - library center.lib renamed to central.lib - nctools_lib: new functions for super-commutative algebras (i.e. SuperCommutative, IsSCA, AltVarStart, AltVarEnd) - resolve.lib: blow ups revised - new algorithms in primdec.lib : radical et al. - improved version of slimgb, incorporated into groebner, strategy change in groebner - finvar.lib: the algorithm of secondary_char0 is now used in general in the non-modular case - finvar.lib: new algorithm for irred_secondary_char0 - finvar.lib: new function irred_secondary_no_molien - finvar.lib: new functions for computing minimal generating sets of invariant rings of finite groups in the non-modular case: invariant_algebra_reynolds for finite matrix groups and invariant_algebra_perm for permutation groups operation for sparse matrices improved: multiplication, prune, conversion to module If you have questions or comments, please send them to the Cygwin mailing list at: cygwin <at> cygwin.com . *** CYGWIN-ANNOUNCE UNSUBSCRIBE INFO *** If you want to unsubscribe from the cygwin-announce mailing list, look at the "List-Unsubscribe: " tag in the email header of this message. Send email to the address specified there. It will be in the format: cygwin-announce-unsubscribe-you=yourdomain.com <at> cygwin.com If you need more information on unsubscribing, start reading here: http://sources.redhat.com/lists.html#unsubscribe-simple Please read *all* of the information on unsubscribing that is available starting at this URL.