<?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>pureBettiDiagram(List) -- pure Betti diagram given a list of degrees</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_pure__Char__Free.html">next</a> | <a href="_pure__Betti_lp__List_rp.html">previous</a> | <a href="_pure__Char__Free.html">forward</a> | <a href="_pure__Betti_lp__List_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>pureBettiDiagram(List) -- pure Betti diagram given a list of degrees</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>pureBettiDiagram L</tt></div> </dd></dl> </div> </li> <li><span>Function: <a href="_pure__Betti__Diagram_lp__List_rp.html" title="pure Betti diagram given a list of degrees">pureBettiDiagram</a></span></li> <li><div class="single">Inputs:<ul><li><span><tt>L</tt>, <span>a <a href="../../Macaulay2Doc/html/___List.html">list</a></span>, of strictly increasing integers</span></li> </ul> </div> </li> <li><div class="single">Outputs:<ul><li><span><span>a <a href="../../Macaulay2Doc/html/___Betti__Tally.html">Betti tally</a></span>, containing the minimal integral Betti numbers which satisfy the Herzog-Kuhl equations</span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div>See <a href="_pure__Betti_lp__List_rp.html" title="list of smallest integral Betti numbers corresponding to a degree sequence">pureBetti</a> for a description of the Herzog-Kuhl equations.<table class="examples"><tr><td><pre>i1 : pureBettiDiagram{0,2,4,5} 0 1 2 3 o1 = total: 3 10 15 8 0: 3 . . . 1: . 10 . . 2: . . 15 8 o1 : BettiTally</pre> </td></tr> <tr><td><pre>i2 : pureBettiDiagram{0,3,4,5,6,7,10} 0 1 2 3 4 5 6 o2 = total: 1 50 175 252 175 50 1 0: 1 . . . . . . 1: . . . . . . . 2: . 50 175 252 175 50 . 3: . . . . . . . 4: . . . . . . 1 o2 : BettiTally</pre> </td></tr> <tr><td><pre>i3 : pureBettiDiagram{0,3,4,5,6,7,8,11} 0 1 2 3 4 5 6 7 o3 = total: 1 77 330 616 616 330 77 1 0: 1 . . . . . . . 1: . . . . . . . . 2: . 77 330 616 616 330 77 . 3: . . . . . . . . 4: . . . . . . . 1 o3 : BettiTally</pre> </td></tr> </table> </div> </div> <div class="single"><h2>See also</h2> <ul><li><span><a href="_pure__Betti_lp__List_rp.html" title="list of smallest integral Betti numbers corresponding to a degree sequence">pureBetti</a> -- list of smallest integral Betti numbers corresponding to a degree sequence</span></li> <li><span><a href="../../Macaulay2Doc/html/_betti.html" title="display degrees">betti</a> -- display degrees</span></li> </ul> </div> </div> </body> </html>