<?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>Tally ^** ZZ -- Cartesian power of sets and tallies</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="___Tally_sp_us_sp__Thing.html">next</a> | <a href="___Tally_sp-_sp__Tally.html">previous</a> | <a href="___Tally_sp_us_sp__Thing.html">forward</a> | <a href="___Tally_sp-_sp__Tally.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>Tally ^** ZZ -- Cartesian power of sets and tallies</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>B = A^**n</tt></div> </dd></dl> </div> </li> <li><span>Operator: <a href="_^_st_st.html" title="a binary operator, usually used for tensor or Cartesian power">^**</a></span></li> <li><div class="single">Inputs:<ul><li><span><tt>A</tt>, <span>a <a href="___Tally.html">tally</a></span></span></li> <li><span><tt>n</tt>, <span>an <a href="___Z__Z.html">integer</a></span></span></li> </ul> </div> </li> <li><div class="single">Outputs:<ul><li><span><tt>B</tt>, <span>a <a href="___Tally.html">tally</a></span>, the tally of <tt>n</tt>-tuples of elements from <tt>A</tt></span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div>If <tt>A</tt> is <span>a <a href="___Set.html">set</a></span>, then so is <tt>B</tt>.<table class="examples"><tr><td><pre>i1 : A = set {1,2} o1 = set {1, 2} o1 : Set</pre> </td></tr> <tr><td><pre>i2 : A^**3 o2 = set {(1, 1, 1), (1, 1, 2), (1, 2, 1), (1, 2, 2), (2, 1, 1), (2, 1, 2), ------------------------------------------------------------------------ (2, 2, 1), (2, 2, 2)} o2 : Set</pre> </td></tr> <tr><td><pre>i3 : A = tally {1,1,2} o3 = Tally{1 => 2} 2 => 1 o3 : Tally</pre> </td></tr> <tr><td><pre>i4 : A^**3 o4 = Tally{(1, 1, 1) => 8} (1, 1, 2) => 4 (1, 2, 1) => 4 (1, 2, 2) => 2 (2, 1, 1) => 4 (2, 1, 2) => 2 (2, 2, 1) => 2 (2, 2, 2) => 1 o4 : Tally</pre> </td></tr> </table> </div> </div> <div class="single"><h2>See also</h2> <ul><li><span><a href="___Set.html" title="the class of all sets">Set</a> -- the class of all sets</span></li> <li><span><a href="___Set_sp_st_st_sp__Set.html" title="Cartesian product">Set ** Set</a> -- Cartesian product</span></li> </ul> </div> </div> </body> </html>