[53c00b] | 1 | @comment -*-texinfo-*- |
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[10937b] | 2 | @comment $Id: NEWS.texi,v 1.48 2005-05-20 18:06:54 levandov Exp $ |
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[53c00b] | 3 | @comment this file contains the News about Singular versions |
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| 4 | @comment Unix |
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| 5 | @ifclear VERSION |
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| 6 | @include version.texi |
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| 7 | @end ifclear |
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| 8 | |
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| 9 | @majorheading NEWS in SINGULAR @value{VERSION} |
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| 10 | |
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[e62563a] | 11 | @ifclear singularmanual |
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[53c00b] | 12 | @macro nref{what} |
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| 13 | \what\ |
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| 14 | @end macro |
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| 15 | @end ifclear |
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| 16 | |
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| 17 | @ifset singularmanual |
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| 18 | @macro nref{what} |
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| 19 | @ref{\what\} |
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| 20 | @end macro |
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| 21 | @end ifset |
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| 22 | |
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[a02163] | 23 | The current version @value{VERSION} is a pre-release to the new |
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| 24 | release series version 3-0. |
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[5c14fb] | 25 | |
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[a02163] | 26 | Singular version 3 has a greater functionality and an improved architecture. |
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| 27 | Major new features are: |
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| 28 | @itemize |
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| 29 | @item |
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[745dd8] | 30 | @nref{Dynamic modules} |
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[a02163] | 31 | @item |
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[3175d1] | 32 | non-commutative extension @nref{PLURAL} |
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[a02163] | 33 | @item |
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[745dd8] | 34 | name spaces (@nref{package}) |
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[a02163] | 35 | @item |
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[745dd8] | 36 | easy manipulation of rings (@nref{ringlist}) |
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[a02163] | 37 | @item |
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[745dd8] | 38 | improved speed of maps (@nref{subst}, @nref{map}) |
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[a02163] | 39 | @item |
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[012bbb] | 40 | variant of Faugeres F4: @nref{slimgb}. |
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| 41 | @item |
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[a02163] | 42 | improved factorization (integration of NTL, factorization over algebraic extensions, |
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| 43 | zeroset.lib) |
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| 44 | @item |
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| 45 | improved gcd of polynomials (including bug fixes) |
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| 46 | @item |
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| 47 | ports to more architectures including automatic building from source (fink on Mac, ebuild on Gentoo) |
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| 48 | @item |
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| 49 | more help browser supported, user extendable (help.cnf) |
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| 50 | @item |
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| 51 | many bugs fixed |
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| 52 | @end itemize |
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| 53 | Besides theses internal changes, Singular version 3 offers many new |
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| 54 | features and functionalities (which were partly already incorporated in |
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| 55 | the 2-0 series). |
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[2983b3] | 56 | |
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[98b5a7] | 57 | @heading Factorizing algorithms revisited |
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| 58 | Starting with version 2-0-4, we use NTL (of Victor Shoup) for factoring |
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| 59 | univariate polynomials. The multivariate factoring code in libfac/factory |
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| 60 | does now also work over algebraic extension fields. |
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[2983b3] | 61 | |
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[53c00b] | 62 | @heading New @sc{Singular} libraries |
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| 63 | |
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[98a386] | 64 | Reorganisation of libraries into "Categories". |
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[53c00b] | 65 | @table @asis |
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[3175d1] | 66 | @item @nref{control_lib} |
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| 67 | algebraic analysis tools for System and Control Theory |
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| 68 | @item @nref{mregular_lib} |
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| 69 | procedures for computing the Castelnuovo-Mumford regularity |
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| 70 | @item @nref{mprimdec_lib} |
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[a02163] | 71 | procedures for primary decomposition of modules |
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[3175d1] | 72 | @item @nref{gmspoly_lib}, @nref{gmssing_lib} |
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[af847a] | 73 | procedures for the Gauss-Manin connection of a singularity |
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[1c981c] | 74 | @item @nref{rootsmr_lib} |
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[7acf9b] | 75 | counting the number of real roots |
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[10937b] | 76 | @item @nref{sheafcoh_lib} |
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| 77 | computing cohomology of sheaves and Tate resolution |
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[7acf9b] | 78 | @item @nref{signcond_lib} |
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| 79 | computing realizable sign conditions |
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[67f7108] | 80 | @item @nref{rootsur_lib} |
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[7acf9b] | 81 | counting number of real roots of univariate polynomial |
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[8c78f0] | 82 | @item @nref{grwalk_lib} |
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[7acf9b] | 83 | Groebner and Pertubation walk |
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[53c00b] | 84 | @end table |
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| 85 | |
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[5c14fb] | 86 | @heading Changes in @sc{Singular} libraries |
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| 87 | Many procedures were moved into different libraries, |
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[a02163] | 88 | the documentation of libraries was generally improved. |
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[7031a2] | 89 | |
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| 90 | All procedures which used to change the current ring return now |
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| 91 | the newly created ring. |
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[5c14fb] | 92 | @table @asis |
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| 93 | @end table |
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| 94 | |
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[53c00b] | 95 | @heading New @sc{Singular} functions |
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| 96 | |
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| 97 | @table @asis |
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[7031a2] | 98 | @item @nref{ringlist} |
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| 99 | manipulation of rings |
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| 100 | @item @nref{slimgb} |
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| 101 | variant of the F4 algorithm to compute Groebner bases |
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| 102 | @item @nref{exportto} |
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| 103 | @item @nref{importfrom} |
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| 104 | |
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| 105 | @item @nref{frwalk} |
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| 106 | fractal walk to change monomial orderings |
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[53c00b] | 107 | @end table |
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| 108 | |
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| 109 | @heading @sc{Singular} functions whose syntax/semantics has changed |
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| 110 | @table @asis |
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[a02163] | 111 | @item @nref{degree} |
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| 112 | outputs degree and dimension instead of returning an int |
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| 113 | @item @nref{attrib} |
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| 114 | new attribute: @code{rowShift} |
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[8d38069] | 115 | @end table |
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| 116 | |
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[3175d1] | 117 | @heading Noncommutative Extension @sc{Plural} |
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| 118 | |
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| 119 | Starting with version 3-0-0, @sc{Singular} features a |
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| 120 | noncommutative extension @sc{Plural}. It allows to |
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| 121 | set and to compute within noncommutative algebras |
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| 122 | with PBW basis. Among available algorithms are Groebner |
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| 123 | bases for left modules, syzygies and resolutions. |
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| 124 | |
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| 125 | Together with @sc{Plural} come the following libraries: |
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| 126 | |
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| 127 | @table @asis |
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| 128 | @item @nref{center_lib} |
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| 129 | computes generators of the center and centralizer subalgebras up |
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| 130 | to a given degree resp. up to a given number of generators |
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| 131 | @item @nref{involution_lib} |
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| 132 | determines linear antiautomorphisms (involutions) and automorphisms |
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| 133 | @item @nref{gkdim_lib} |
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| 134 | computes a Gel'fand-Kirillov dimension for modules |
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| 135 | @item @nref{ncalg_lib} |
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| 136 | includes ready-to-use funtions for defining many important |
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| 137 | noncommutative algebras |
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| 138 | @item @nref{ncdecomp_lib} |
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| 139 | computes a decomposition of module by its central characters |
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| 140 | @item @nref{ncalg_lib}, @nref{nctools_lib} |
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| 141 | contain numerous useful tools for noncommutative algebras |
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| 142 | @item @nref{qmatrix_lib} |
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| 143 | procedures, related to quantum matrices and minors |
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| 144 | @end table |
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| 145 | |
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[2983b3] | 146 | @heading Internal Changes |
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| 147 | @table @asis |
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[a02163] | 148 | @item new mapping code |
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[3175d1] | 149 | @c @item non-commutative extension (Plural) |
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[a02163] | 150 | @item factory revisited |
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[7acf9b] | 151 | (gcd, factorizing polynomial over algebraic extension fields,...) |
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[2983b3] | 152 | @end table |
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| 153 | |
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[98a386] | 154 | @heading Porting |
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[2983b3] | 155 | |
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[a70441f] | 156 | @itemize @bullet |
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[7acf9b] | 157 | @item Singular is available for ix86-Linux, HPUX_10, |
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| 158 | SunOS-5, IRIX-6, ix86-Win (runs on Windows 95/98/NT4/2000/XP), |
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[a02163] | 159 | FreeBSD, MacOS X, DecAlpha-Linux, x86_64-Linux (AMD64/Opteron/EM64T), |
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| 160 | IA64-Linux |
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[8d38069] | 161 | @end itemize |
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