1 | @comment -*-texinfo-*- |
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2 | @comment $Id: NEWS.texi,v 1.79 2007-04-11 15:26:08 Singular Exp $ |
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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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11 | @ifclear singularmanual |
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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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23 | @heading Updates for version @value{VERSION} |
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24 | |
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25 | The current version @value{VERSION} is mainly a bug fix release, |
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26 | but it contains also some new features: |
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27 | @itemize @bullet |
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28 | @item |
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29 | licence changed: omalloc and MP are now (also) available under GPL; |
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30 | that means that all parts of @sc{Singular} are licenced under GPL (resp. LGPL). |
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31 | @item |
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32 | factory, libfac, Singular updated for gcc 4.1.x |
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33 | @item |
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34 | kernel updated for the optional use of boost |
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35 | @item |
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36 | new operator @code{a:b} : @code{intvec} of length @code{b} with constant entries @code{a} |
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37 | @item |
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38 | new command: (@nref{interpolation}: ideal of points with given multiplicities) |
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39 | @item |
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40 | non-commutative kernel subsystem was rewritten for more efficient super-commutative (and exterior) algebras |
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41 | @item |
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42 | @nref{std} et al.: new selection strategy for reductions (@nref{option} (length)). |
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43 | @item |
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44 | @nref{simplify} slightly changed: does not omit zero polynomial unless |
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45 | specified. |
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46 | @item |
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47 | new library: modstd.lib (@nref{modstd_lib}): Groebner base computations |
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48 | over the rational numbers via modular computations |
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49 | @item |
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50 | new library: noether.lib (@nref{noether_lib}): Noether normalization of an ideal(not nessecary homogeneous) |
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51 | @item |
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52 | new library: atkins.lib (@nref{atkins_lib}): the elliptic curve primality test of Atkin |
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53 | @item |
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54 | new library: aksaka.lib (@nref{aksaka_lib}): primality testing after Agrawal, Saxena, Kayal |
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55 | @item |
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56 | new library: arcpoint.lib (@nref{arcpoint_lib}): truncations of arcs at a singular point |
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57 | @item |
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58 | new library: resgraph.lib (@nref{resgraph_lib}): visualization of resolution data. |
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59 | @item |
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60 | new library: realrad.lib (@nref{realrad_lib}): computation of the real radical |
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61 | over the rational numbers and extensions thereof |
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62 | @item |
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63 | sheafcoh.lib: new experimental functions (sheafCohBGG2) |
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64 | @item |
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65 | nctools.lib: new functions for super-commutative algebras (SuperCommutative, IsSCA, AltVarStart, AltVarEnd) |
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66 | @item |
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67 | resolve.lib: blow ups revised (@nref{resolve_lib}). |
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68 | @item |
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69 | new algorithms in primdec.lib (@nref{primdec_lib}): radical et al. |
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70 | @item |
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71 | improved version of @nref{slimgb}, incorporated into @nref{groebner}, |
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72 | strategy change in groebner. |
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73 | @item |
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74 | finvar.lib: the algorithm of @nref{secondary_char0} is now used in general in the |
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75 | non-modular case (@nref{finvar_lib}). |
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76 | @item |
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77 | finvar.lib: new algorithm for @nref{irred_secondary_char0} (@nref{finvar_lib}). |
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78 | @item |
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79 | finvar.lib: new function @nref{irred_secondary_no_molien} (@nref{finvar_lib}). |
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80 | @item |
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81 | finvar.lib: new functions for computing minimal generating sets of |
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82 | invariant rings of finite groups in the non-modular case: @nref{invariant_algebra_reynolds} for finite |
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83 | matrix groups and @nref{invariant_algebra_perm} for permutation groups (@nref{finvar_lib}). |
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84 | @item |
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85 | operation for sparse matrices improved: multiplication, prune, conversion to module. |
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86 | @item |
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87 | experimental: @code{python} / @code{ipython} interface |
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88 | @end itemize |
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89 | |
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90 | @heading News in version 3-0-2 |
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91 | |
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92 | The version 3-0-2 is mainly a bug fix release, |
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93 | but it contains also some new features: |
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94 | @itemize @bullet |
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95 | @item |
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96 | factory, libfac updated for gcc 4.1.x |
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97 | @item |
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98 | configure/speed improved for 64bit architectures |
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99 | @item |
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100 | new library: dmod.lib (@nref{dmod_lib}) |
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101 | @item |
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102 | new library: perron.lib (@nref{perron_lib}) |
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103 | @item |
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104 | improved center.lib (@nref{center_lib}): revised implementation, new functions (sa_reduce etc.) |
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105 | @item |
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106 | revised ncalg.lib (@nref{ncalg_lib}): new algebras, U(sl_n) and U(g_2) changed to conform GAP. |
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107 | @item |
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108 | new algorithms in primdec.lib (@nref{primdec_lib}): radical et al. |
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109 | @item |
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110 | improved version of @nref{slimgb}, incorporated into @nref{groebner} |
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111 | @item |
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112 | finvar.lib: new algorithm for @nref{secondary_char0}, which is a drastic improvement |
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113 | (@nref{finvar_lib}). |
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114 | @item |
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115 | finvar.lib: new function @nref{irred_secondary_char0} (@nref{finvar_lib}). |
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116 | @item |
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117 | finvar.lib: new function @nref{rel_orbit_variety}, complementing @nref{relative_orbit_variety} |
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118 | (@nref{finvar_lib}). |
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119 | @item |
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120 | improved module generator (@code{modgen}) |
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121 | @item |
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122 | experimental: new type @nref{bigint} |
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123 | @c @item |
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124 | @c experimental: @code{python} / @code{ipython} interface |
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125 | @item |
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126 | more architectures: Solaris on x86/opteron, ... |
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127 | @item |
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128 | build process improved: builds automatically without patches on 64bit architectures |
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129 | @end itemize |
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130 | |
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131 | @heading NEWS in version 3-0-1 |
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132 | The version 3-0-1 is mainly a bug fix release, |
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133 | but it contains also some new features: |
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134 | @itemize @bullet |
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135 | @item |
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136 | NTL upgraded to version 5.4 |
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137 | @item |
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138 | new library: absfact.lib @nref{absfact_lib} |
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139 | @item |
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140 | new procedures in primdec.lib: @nref{absPrimdecGTZ} |
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141 | @item |
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142 | new procedures in standard.lib: @nref{weightKB} |
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143 | @item |
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144 | build process improved: new make target @code{install_all} |
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145 | @item |
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146 | improved version of @nref{slimgb}, incorporated into @nref{groebner} |
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147 | @item |
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148 | arithmetic in Z/pZ for architecture x84_64 improved (by 25 %) |
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149 | @end itemize |
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150 | |
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151 | @heading NEWS in version 3-0-0 |
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152 | |
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153 | The version 3-0-0 is the first in the new |
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154 | release series version 3-0. |
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155 | |
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156 | Singular version 3 has a greater functionality and an improved architecture. |
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157 | Major new features are: |
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158 | @itemize |
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159 | @item |
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160 | @nref{Dynamic modules} |
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161 | @item |
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162 | non-commutative extension @nref{Non-commutative subsystem PLURAL} |
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163 | @item |
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164 | name spaces (@nref{package}) |
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165 | @item |
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166 | easy manipulation of rings (@nref{ringlist}) |
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167 | @item |
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168 | improved speed of maps (@nref{subst}, @nref{map}) |
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169 | @item |
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170 | a new algorithm for Groebner base computations: @nref{slimgb}. |
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171 | @item |
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172 | improved factorization (integration of NTL, factorization over algebraic extensions, |
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173 | zeroset.lib) |
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174 | @item |
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175 | improved gcd of polynomials (including bug fixes) |
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176 | @item |
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177 | ports to more architectures including automatic building from source (fink on Mac, ebuild on Gentoo) |
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178 | @item |
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179 | more help browsers supported, user extendable (help.cnf) |
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180 | @item |
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181 | better support of graded modules |
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182 | @item |
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183 | many bugs fixed |
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184 | @end itemize |
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185 | Besides theses internal changes, Singular version 3 offers many new |
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186 | features and functionalities (which were partly already incorporated in |
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187 | the 2-1 pre-release series). |
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188 | |
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189 | @heading Factorizing algorithms revisited |
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190 | Starting with version 2-0-4, we use NTL (of Victor Shoup) for factoring |
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191 | univariate polynomials. The multivariate factorization code in libfac/factory |
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192 | now also works over algebraic extension fields. |
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193 | |
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194 | @heading New @sc{Singular} libraries |
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195 | |
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196 | @table @asis |
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197 | @item @nref{control_lib} |
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198 | algebraic analysis tools for System and Control Theory |
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199 | @item @nref{mregular_lib} |
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200 | procedures for computing the Castelnuovo-Mumford regularity |
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201 | @item @nref{mprimdec_lib} |
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202 | procedures for primary decomposition of modules |
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203 | @item @nref{gmspoly_lib}, @nref{gmssing_lib} |
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204 | procedures for the Gauss-Manin connection of a singularity |
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205 | @item @nref{resolve_lib}, @nref{reszeta_lib} |
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206 | resolution of singularities and applications |
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207 | @item @nref{rootsmr_lib} |
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208 | counting the number of real roots |
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209 | @item @nref{sheafcoh_lib} |
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210 | computing cohomology of sheaves and Tate resolution |
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211 | @item @nref{signcond_lib} |
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212 | computing realizable sign conditions |
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213 | @item @nref{rootsur_lib} |
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214 | counting number of real roots of univariate polynomial |
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215 | @item @nref{grwalk_lib} |
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216 | Groebner and Pertubation walk |
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217 | @end table |
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218 | |
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219 | @heading Changes in @sc{Singular} libraries |
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220 | Many procedures were moved into different libraries, |
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221 | the documentation of libraries was generally improved. |
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222 | |
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223 | All procedures which used to change the current ring return now |
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224 | the newly created ring. |
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225 | @table @asis |
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226 | @end table |
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227 | |
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228 | @heading New @sc{Singular} functions |
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229 | |
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230 | @table @asis |
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231 | @item @nref{ringlist} |
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232 | manipulation of rings |
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233 | @item @nref{slimgb} |
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234 | a new algorithm to compute Groebner bases |
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235 | @item @nref{exportto} |
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236 | transfer an identifier to the specified package |
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237 | @item @nref{importfrom} |
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238 | generate a copy of an identifier from the specified package in the current package |
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239 | @item @nref{frwalk} |
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240 | fractal walk to change monomial orderings |
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241 | @end table |
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242 | |
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243 | @heading @sc{Singular} functions whose syntax/semantics has changed |
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244 | @table @asis |
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245 | @item @nref{degree} |
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246 | outputs degree and dimension instead of returning an int |
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247 | @item @nref{attrib} |
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248 | new attribute: @code{rowShift} |
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249 | @end table |
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250 | |
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251 | @heading Noncommutative Extension @sc{Plural} |
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252 | |
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253 | Starting with version 3-0-0, @sc{Singular} features a |
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254 | noncommutative extension @sc{Plural}. It allows to |
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255 | set and to compute within noncommutative algebras |
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256 | with PBW basis. Among available algorithms are Groebner |
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257 | bases for left modules, syzygies and resolutions. |
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258 | |
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259 | Together with @sc{Plural} come the following libraries: |
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260 | |
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261 | @table @asis |
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262 | @item @nref{center_lib} |
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263 | computes generators of the center and centralizer subalgebras up |
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264 | to a given degree resp. up to a given number of generators |
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265 | @item @nref{involut_lib} |
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266 | determines linear antiautomorphisms (involutions) and automorphisms |
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267 | @item @nref{gkdim_lib} |
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268 | computes a Gel'fand-Kirillov dimension for modules |
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269 | @item @nref{ncalg_lib} |
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270 | includes ready-to-use funtions for defining many important |
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271 | noncommutative algebras |
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272 | @item @nref{ncdecomp_lib} |
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273 | computes a decomposition of module by its central characters |
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274 | @item @nref{ncalg_lib}, @nref{nctools_lib} |
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275 | contain numerous useful tools for noncommutative algebras |
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276 | @item @nref{qmatrix_lib} |
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277 | procedures, related to quantum matrices and minors |
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278 | @end table |
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279 | |
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280 | @heading Internal Changes |
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281 | @table @asis |
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282 | @item new mapping code |
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283 | @c @item non-commutative extension (Plural) |
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284 | @item factory revised |
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285 | (gcd, factorizing polynomial over algebraic extension fields,...) |
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286 | @end table |
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287 | |
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288 | @heading Porting |
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289 | |
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290 | @itemize @bullet |
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291 | @item Singular is available for ix86-Linux, HPUX_10, |
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292 | SunOS-5, IRIX-6, ix86-Win (runs on Windows 95/98/NT4/2000/XP), |
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293 | FreeBSD, MacOS X, DecAlpha-Linux, x86_64-Linux (AMD64/Opteron/EM64T), |
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294 | IA64-Linux |
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295 | @end itemize |
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296 | |
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