# decoration

[LaTeX]() ⟩ decoration&#x20;

{% hint style="success" %}
```tex
\overset{\Delta}{=}                % overset
\underbrace{...}_{\text{...}}      % underbrace
\overbrace{...}^{\text{...}}       % overbrace
```
{% endhint %}

{% tabs %}
{% tab title="💈範例" %}
<table><thead><tr><th width="178">example</th><th>code</th></tr></thead><tbody><tr><td><span class="math">\overset{\Delta}{=}</span></td><td><pre class="language-tex"><code class="lang-tex">% overset
\overset{\Delta}{=}
</code></pre></td></tr><tr><td><span class="math">\underbrace{a+b+c}_{\text{note}}</span></td><td><pre class="language-tex"><code class="lang-tex">% underbrace
\underbrace{...}_{\text{...}}
</code></pre></td></tr><tr><td><span class="math">\overbrace{a+b+c}^{\text{note}}</span></td><td><pre class="language-tex"><code class="lang-tex">% overbrace
\overbrace{...}^{\text{...}}
</code></pre></td></tr><tr><td><span class="math">\undergroup{F=ma}</span></td><td><pre class="language-tex"><code class="lang-tex">% group
\undergroup{...}
</code></pre></td></tr><tr><td><span class="math">\sout{\text{strike through}}</span></td><td><pre class="language-tex"><code class="lang-tex">% strike out
\sout{...}
</code></pre></td></tr></tbody></table>
{% endtab %}

{% tab title="⬇️ 應用" %}
* [dot](../../linear/vec/op/dot "mention")
{% endtab %}
{% endtabs %}
