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tables.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Relations as Tables</title>
<link rel="stylesheet" type="text/css" href="style.css"/>
</head>
<body id="tables">
<div id="wrapper">
<header>
<div class="container clearfix">
<h1>
<a class="gear" href="index.html" title="Home">
<img alt="gear" src="gear.png">
</a>
</h1>
<h1 class="title">Discrete Structures Tutorials</h1>
<nav>
<ul id="topbar">
<li><a class="navlink" href="index.html">Home</a></li>
<li><a class="navlink" href="binary-search.html">Binary Search</a></li>
<li><a class="navlink" href="about.html">About</a></li>
<li><a class="navlink" href="references.html">References</a></li>
</ul>
</nav>
</div>
</header>
<main>
<div class="container">
<div class="row">
<div class="midcolumn">
<aside class="sidebar">
<ul class="mainmenu">
<li class="heading">Content</li>
<li><a class="sidelink" href="relation.html">What is a Relation?</a></li>
<li><a class="sidelink" href="properties.html">Properties of Relations</a></li>
<li><a class="sidelink" href="tables.html">Relations as Tables</a></li>
<li><a class="sidelink" href="graphs.html">Relations as Graphs</a></li>
<li><a class="sidelink" href="examples.html">Examples</a></li>
</ul>
</aside>
</div>
<div class="row">
<div class="content">
<div class="midcolumn2">
<!-- Main Content -->
<div class="heading">
<h1>Relations Tutorial - Relations as Tables</h1>
<h4>by David Muñoz and Will Ptacek</h4>
</div>
<div class="ptext">
<p class="pic"><span class="bold">Reflexivity:</span> <br> A relation is reflexive if, for every element of the
domain, there is a column where both rows have the same value.
<img height="125" width="700" src="table1.png">
</p>
<p class="pic"><span class="bold">Symmetry:</span> <br> For every column with rows x and y, there is another
column with rows y and x.
<img height="125" width="700" src="table2.png">
</p>
<p class="pic"><span class="bold">Transitivity:</span> <br> If there is a column with rows x and y, and a column
with rows y and z, then there is also a column with rows x and z.
<img height="125" width="700" src="table3.png">
</p>
</div>
</div>
<div class="row">
<div class="midcolumn3" id="rightbar"></div>
</div>
</div>
</div>
</div>
</div>
</main>
</div>
</body>
</html>