Mercurial > dylan

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     7 <title>Notes for SICM</title>

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    83 <div id="content">

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    85 

    86 

    87 <div id="table-of-contents">

    88 <h2>Table of Contents</h2>

    89 <div id="text-table-of-contents">

    90 <ul>

    91 <li><a href="#sec-1">1 Tuples </a></li>

    92 <li><a href="#sec-2">2 Generic arithmetic </a></li>

    93 </ul>

    94 </div>

    95 </div>

    96 

    97 <div id="outline-container-1" class="outline-2">

    98 <h2 id="sec-1"><span class="section-number-2">1</span> Tuples </h2>

    99 <div class="outline-text-2" id="text-1">

   100 

   101 <ul>

   102 <li>Tuples are a new data type: sequences with <i>spin</i>. A tuple can be either spin-up or spin-down.

   103 </li>

   104 <li>A pair of compatible tuples can be <b>contracted</b> into a single number.

   105 <ul>

   106 <li>Tuples are compatible if they have the same length and opposite

   107     spin, and if their corresponding pairs of items are either both

   108     numbers or both compatible tuples.

   109 </li>

   110 <li>To contract tuples, take the sum of the products of corresponding

   111     pairs of items. (To take the product of compatible tuples,

   112     contract them.)

   113 </li>

   114 </ul>

   115 

   116 </li>

   117 <li>

   118 </li>

   119 </ul>

   120 

   121 

   122 </div>

   123 

   124 </div>

   125 

   126 <div id="outline-container-2" class="outline-2">

   127 <h2 id="sec-2"><span class="section-number-2">2</span> Generic arithmetic </h2>

   128 <div class="outline-text-2" id="text-2">

   129 

   130 

   131 </div>

   132 </div>

   133 <div id="postamble">

   134 <p class="date">Date: 2011-08-10 14:07:53 EDT</p>

   135 <p class="author">Author: Robert McIntyre</p>

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author	Robert McIntyre <rlm@mit.edu>
date	Fri, 28 Oct 2011 04:56:48 -0700
parents	b4de894a1e2e
children