DS-HTML-Project/relation.html at master · the4thdave/DS-HTML-Project · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>What is a Relation?</title>
    <link rel="stylesheet" type="text/css" href="style.css"/>
</head>
<body id="relation">
<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>
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    <main>
        <div class="container">
            <div class="row">
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                    <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>
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                            <!-- Main Content -->
                            <div class="heading">
                                <h1>Relations Tutorial - What is a Relation?</h1>
                                <h4>by David Muñoz and Will Ptacek</h4>
                            </div>
                            <div class="ptext">
                                <p>A relation is how the elements in the <span class="under">domain</span> relate to
                                    the elements in the <span class="under">codomain</span>.</p>
                                <p><span class="bold">Domain</span> of the relation - the "subject" of the relation. </p>
                                <p><span class="bold">Co-domain</span> of the relation - the "object" of the relation.</p>
                                <p>Elements of the Relation: <br> Suppose the domain is {Matt, Ethan, Jed} and the co-domain is {Cat, Dog, Lion}
                                    The ordered pairs of the domain and co-domain are (Matt, Cat) , (Ethan, Dog) , and
                                    (Jed, Lion)
                                    We call these the elements of the relation.</p>
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</html>