<?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>totalDegreeStartSystem(List) -- construct a start system for the total degree homotopy</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_track_lp__List_cm__List_cm__List_rp.html">next</a> | <a href="___Tolerance.html">previous</a> | <a href="_track_lp__List_cm__List_cm__List_rp.html">forward</a> | <a href="___Tolerance.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>totalDegreeStartSystem(List) -- construct a start system for the total degree homotopy</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>(S,solsS) = totalDegreeStartSystem T</tt></div> </dd></dl> </div> </li> <li><span>Function: <a href="_total__Degree__Start__System_lp__List_rp.html" title="construct a start system for the total degree homotopy">totalDegreeStartSystem</a></span></li> <li><div class="single">Inputs:<ul><li><span><span>a <a href="../../Macaulay2Doc/html/___List.html">list</a></span>, T, polynomials of the target system</span></li> </ul> </div> </li> <li><div class="single">Outputs:<ul><li><span><span>a <a href="../../Macaulay2Doc/html/___Sequence.html">sequence</a></span>, <tt>(S,solsS)</tt>, where <tt>S</tt> is the list of polynomials in the start system and <tt>solsS</tt> the list of start solutions</span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div>Given a square target system, constructs a start system for a total degree homotopy together with the total degree many start solutions.<table class="examples"><tr><td><pre>i1 : R = CC[x,y];</pre> </td></tr> <tr><td><pre>i2 : T = {x^2+y^2-1, x*y};</pre> </td></tr> <tr><td><pre>i3 : totalDegreeStartSystem T 2 2 o3 = ({x - 1, y - 1}, {(-1, -1), (-1, 1), (1, -1), (1, 1)}) o3 : Sequence</pre> </td></tr> </table> </div> </div> </div> </body> </html>