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4 <head>
5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
6 <meta name="generator" content="Docutils 0.14rc2: http://docutils.sourceforge.net/" />
7 <title>Mathematics</title>
8 <link rel="stylesheet" href="../input/data/html4css1.css" type="text/css" />
9 </head>
10 <body>
11 <div class="document" id="mathematics">
12 <h1 class="title">Mathematics</h1>
14 <p>Docutils supports inline math with the prefix or postfix <tt class="docutils literal">:math:</tt>
15 role specificator, <tt class="math">n! + \sin(x_n^2)</tt> and <tt class="math">A_\text{c} =
16 \frac{\pi}{4} d^2</tt>, as well as displayed math via the
17 <cite>math</cite> directive:</p>
18 <pre class="math">
19 f(\epsilon) = \frac{1}{1 + \exp\left(\frac{\varepsilon}{k_\text{B}T}\right)}
20 </pre>
21 <p>Content may start on the first line of the directive, e.g.</p>
22 <pre class="math">
23 N = \frac{\text{number of apples}}{7}
24 </pre>
25 <p>Equations can be labeled with a reference name using the <tt class="docutils literal">:name:</tt> option.
26 See <a class="reference internal" href="#eq-m">eq:M</a> and <a class="reference internal" href="#eq-schrodinger">eq:schrödinger</a> below.</p>
27 <p>The determinant of the matrix</p>
28 <pre class="math" id="eq-m">
29 \mathbf{M} = \left(\begin{matrix}a&amp;b\\c&amp;d\end{matrix}\right)
30 </pre>
31 <p>is <tt class="math">|\mathbf{M}| = ad - bc</tt>.</p>
32 <p>More than one display math block can be put in one math directive.
33 For example, the following sum and integral with limits:</p>
34 <pre class="math">
35 \int_0^1 x^n dx = \frac{1}{n + 1}
36 </pre>
37 <pre class="math">
38 \sum_{n=1}^m n = \frac{m(m+1)}{2}
39 </pre>
40 <p>LaTeX-supported Unicode math symbols can be used in math roles and
41 directives:</p>
42 <p>The Schrödinger equation</p>
43 <pre class="math" id="eq-schrodinger">
44 i\hbar \frac{\partial }{\partial t}\Psi = \hat{H}\Psi ,
45 </pre>
46 <p>with the <em>wave function</em> <tt class="math">\Psi </tt>, describes how the quantum state of a
47 physical system changes in time.</p>
48 <dl class="docutils">
49 <dt>Math-Accents:</dt>
50 <dd><table border="1" class="colwidths-given borderless first last docutils">
51 <colgroup>
52 <col width="33%" />
53 <col width="33%" />
54 <col width="33%" />
55 </colgroup>
56 <tbody valign="top">
57 <tr><td><tt class="math">\acute{a}</tt> <tt class="docutils literal">\acute{a}</tt></td>
58 <td><tt class="math">\dot{t}</tt> <tt class="docutils literal">\dot{t}</tt></td>
59 <td><tt class="math">\hat{\gamma}</tt> <tt class="docutils literal"><span class="pre">\hat{\gamma}</span></tt></td>
60 </tr>
61 <tr><td><tt class="math">\grave{a}</tt> <tt class="docutils literal">\grave{a}</tt></td>
62 <td><tt class="math">\ddot{t}</tt> <tt class="docutils literal">\ddot{t}</tt></td>
63 <td><tt class="math">\tilde{\alpha}</tt> <tt class="docutils literal"><span class="pre">\tilde{\alpha}</span></tt></td>
64 </tr>
65 <tr><td><tt class="math">\breve{x}</tt> <tt class="docutils literal">\breve{x}</tt></td>
66 <td><tt class="math">\dddot{t}</tt> <tt class="docutils literal">\dddot{t}</tt></td>
67 <td><tt class="math">\vec{\imath}</tt> <tt class="docutils literal"><span class="pre">\vec{\imath}</span></tt></td>
68 </tr>
69 <tr><td><tt class="math">\check{a}</tt> <tt class="docutils literal">\check{a}</tt></td>
70 <td><tt class="math">\bar{a}</tt> <tt class="docutils literal">\bar{a}</tt></td>
71 <td><tt class="math">\vec{R}</tt> <tt class="docutils literal">\vec{R}</tt></td>
72 </tr>
73 </tbody>
74 </table>
75 </dd>
76 </dl>
77 <!-- \widetilde{xxx}
78 \widehat{xxx} -->
79 <p>Modulation Transfer Function:</p>
80 <pre class="math">
81 \text{MTF} = \left|\frac{\mathcal{F}\{s(x)\}}
82 {\mathcal{F}\{ s(x)\} |_{\omega _{x}=0}}\right|
83 = \mathrm{abs}\left(\frac
84 {\int _{-\infty }^{\infty }s(x) \mathrm{e}^{\mathrm{i}\omega _{x}x}\mathrm{d}{x}}
85 {\int _{-\infty }^{\infty }s(x)\mathrm{d}{x}}
86 \right).
87 </pre>
88 <p>Math split over two lines: If a double backslash is detected outside a
89 <tt class="docutils literal"><span class="pre">\begin{...}</span> <span class="pre">\end{...}</span></tt> pair, the math code is wrapped in an <a class="reference external" href="ftp://ftp.ams.org/ams/doc/amsmath/short-math-guide.pdf">AMSmath</a>
90 <tt class="docutils literal">align</tt> environment:</p>
91 <pre class="math">
92 s_{\mathrm{out}}(x) &amp; = s_{\mathrm{in}}(x') * s_\delta (x-x') \\
93 &amp; = \int s_{\mathrm{in}}(x')s_\delta (x-x')\mathrm{d}x'
94 </pre>
95 <p>Cases (&quot;manually&quot;, with <tt class="docutils literal">matrix</tt> environment):</p>
96 <pre class="math">
97 \mathrm{sgn}(x) = \left\{\begin{matrix}
98 -1 &amp; x&lt;0\\
99 1 &amp; x&gt;0
100 \end{matrix}\right.
101 </pre>
102 <p>Cases with the <a class="reference external" href="ftp://ftp.ams.org/ams/doc/amsmath/short-math-guide.pdf">AMSmath</a> <tt class="docutils literal">cases</tt> environment (not (yet) supported by
103 HTML writers with <tt class="docutils literal"><span class="pre">--math-output=MathML</span></tt>):</p>
104 <pre class="math">
105 \mathrm{sgn}(x) = \begin{cases}
106 -1 &amp; x&lt;0\\
107 1 &amp; x&gt;0
108 \end{cases}
109 </pre>
110 </div>
111 </body>
112 </html>