<?xml version="1.0" encoding="utf-8" ?> <!-- for emacs: -*- coding: utf-8 -*- --> <!-- Apache may like this line in the file .htaccess: AddCharset utf-8 .html --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd" > <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head><title>saturate(..., MinimalGenerators => ...) -- whether to compute minimal generators</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_saturate_lp..._cm_sp__Pair__Limit_sp_eq_gt_sp..._rp.html">next</a> | <a href="_saturate_lp..._cm_sp__Degree__Limit_sp_eq_gt_sp..._rp.html">previous</a> | <a href="_saturate_lp..._cm_sp__Pair__Limit_sp_eq_gt_sp..._rp.html">forward</a> | <a href="_saturate_lp..._cm_sp__Degree__Limit_sp_eq_gt_sp..._rp.html">backward</a> | up | <a href="index.html">top</a> | <a href="master.html">index</a> | <a href="toc.html">toc</a> | <a href="http://www.math.uiuc.edu/Macaulay2/">Macaulay2 web site</a></div> </td> </tr> </table> <hr/> <div><h1>saturate(..., MinimalGenerators => ...) -- whether to compute minimal generators</h1> <div class="single"><h2>Synopsis</h2> <ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>saturate(...,MinimalGenerators=>b)</tt></div> </dd></dl> </div> </li> <li><div class="single">Inputs:<ul><li><span><tt>b</tt>, <span>a <a href="___Boolean.html">Boolean value</a></span>, default is true</span></li> </ul> </div> </li> <li><div class="single">Consequences:<ul><li>If b is false, then the minimalization of the saturation will not be done</li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div>Sometimes the extra time to find the minimal generators is too large. This allows one to bypass this part of the computation.<table class="examples"><tr><td><pre>i1 : R = ZZ/101[x_0..x_4] o1 = R o1 : PolynomialRing</pre> </td></tr> <tr><td><pre>i2 : I = truncate(8, monomialCurveIdeal(R,{1,4,5,9})); o2 : Ideal of R</pre> </td></tr> <tr><td><pre>i3 : time gens gb I; -- used 0.041994 seconds 1 428 o3 : Matrix R <--- R</pre> </td></tr> <tr><td><pre>i4 : time J1 = saturate(I); -- used 0.152977 seconds o4 : Ideal of R</pre> </td></tr> <tr><td><pre>i5 : time J = saturate(I, MinimalGenerators=>false); -- used 0.121982 seconds o5 : Ideal of R</pre> </td></tr> <tr><td><pre>i6 : numgens J o6 = 1002</pre> </td></tr> <tr><td><pre>i7 : numgens J1 o7 = 7</pre> </td></tr> </table> </div> </div> <h2>Further information</h2> <ul><li><span>Default value: <a href="_true.html" title="">true</a></span></li> <li><span>Function: <span><a href="_saturate.html" title="saturation of ideal or submodule">saturate</a> -- saturation of ideal or submodule</span></span></li> <li><span>Option name: <span><a href="___Minimal__Generators.html" title="">MinimalGenerators</a></span></span></li> </ul> <div class="single"><h2>Caveat</h2> <div>Most of the time, you don't want to do this!</div> </div> <div class="single"><h2>See also</h2> <ul><li><span><a href="_monomial__Curve__Ideal.html" title="make the ideal of a monomial curve">monomialCurveIdeal</a> -- make the ideal of a monomial curve</span></li> <li><span><a href="_truncate.html" title="truncate the module at a specified degree">truncate</a> -- truncate the module at a specified degree</span></li> </ul> </div> </div> </body> </html>