<?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>Monoid -- the class of all monoids</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="___Monoid_sp_st_st_sp__Monoid.html">next</a> | <a href="_modulo_lp__Matrix_cm__Matrix_rp.html">previous</a> | <a href="___Monoid_sp_st_st_sp__Monoid.html">forward</a> | <a href="_modulo_lp__Matrix_cm__Matrix_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>Monoid -- the class of all monoids</h1> <div class="single"><h2>Description</h2> <div>A monoid is a set with a multiplicative operation on it and an identity element. A typical monoid is the set of monomials in a polynomial ring, which we consider to be created before the polynomial ring is created.</div> </div> <div class="waystouse"><h2>Types of monoid :</h2> <ul><li><span><a href="___Ordered__Monoid.html" title="the class of all ordered monoids">OrderedMonoid</a> -- the class of all ordered monoids</span></li> </ul> <h2>Functions and methods returning a monoid :</h2> <ul><li><span>degreesMonoid(GeneralOrderedMonoid), see <span><a href="_degrees__Monoid.html" title="get the monoid of degrees">degreesMonoid</a> -- get the monoid of degrees</span></span></li> <li><span>degreesRing(GeneralOrderedMonoid), see <span><a href="_degrees__Ring_lp__Ring_rp.html" title="the ring of degrees">degreesRing(Ring)</a> -- the ring of degrees</span></span></li> <li><span><a href="___Monoid_sp_st_st_sp__Monoid.html" title="tensor product of monoids">Monoid ** Monoid</a> -- tensor product of monoids</span></li> <li><span>tensor(Monoid,Monoid), see <span><a href="_tensor_lp__Ring_cm__Ring_rp.html" title="tensor product">tensor(Ring,Ring)</a> -- tensor product</span></span></li> </ul> <h2>Methods that use a monoid :</h2> <ul><li><span><a href="_options_lp__Monoid_rp.html" title="get values used for optional arguments">options(Monoid)</a> -- get values used for optional arguments</span></li> <li><span>use(Monoid), see <span><a href="_use_lp__Ring_rp.html" title="install ring variables and ring operations">use(Ring)</a> -- install ring variables and ring operations</span></span></li> </ul> </div> <div class="waystouse"><h2>For the programmer</h2> <p>The object <a href="___Monoid.html" title="the class of all monoids">Monoid</a> is <span>a <a href="___Type.html">type</a></span>, with ancestor classes <a href="___Type.html" title="the class of all types">Type</a> < <a href="___Mutable__Hash__Table.html" title="the class of all mutable hash tables">MutableHashTable</a> < <a href="___Hash__Table.html" title="the class of all hash tables">HashTable</a> < <a href="___Thing.html" title="the class of all things">Thing</a>.</p> </div> </div> </body> </html>