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<head>
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<title>BQN: Circle Jot (`⌾`)</title>
</head>
<div class="nav">(<a href="https://github.com/mlochbaum/BQN">github</a>) / <a href="../index.html">BQN</a> / <a href="index.html">help</a></div>
<h1 id="circle-jot-"><a class="header" href="#circle-jot-">Circle Jot (<code><span class='Modifier2'>⌾</span></code>)</a></h1>
<h2 id="-----under"><a class="header" href="#-----under"><code><span class='Function'>𝔽</span><span class='Modifier2'>⌾</span><span class='Function'>𝔾</span> <span class='Value'>𝕩</span></code>, <code><span class='Value'>𝕨</span> <span class='Function'>𝔽</span><span class='Modifier2'>⌾</span><span class='Function'>𝔾</span> <span class='Value'>𝕩</span></code>: Under</a></h2>
<ul>
<li>Apply transformation <code><span class='Function'>𝔾</span></code> to all arguments</li>
<li>Apply <code><span class='Function'>𝔽</span></code> to the transformed arguments</li>
<li>Undo transformation <code><span class='Function'>𝔾</span></code></li>
</ul>
<p>Where <code><span class='Function'>𝔾</span></code> must be</p>
<ul>
<li>A function invertible by <code><span class='Modifier'>⁼</span></code> (Undo)</li>
<li>A structural modification</li>
</ul>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=ICAgOeKMvigx4oq44oqRKSAx4oC/MuKAvzMKCiAgIOKImuKBvCAo4oiaMSkgKyAo4oiaOSkKCiAgIDEgK+KMvuKImiA5">↗️</a><pre> <span class='Number'>9</span><span class='Modifier2'>⌾</span><span class='Paren'>(</span><span class='Number'>1</span><span class='Modifier2'>⊸</span><span class='Function'>⊑</span><span class='Paren'>)</span> <span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>3</span>
⟨ 1 9 3 ⟩
<span class='Function'>√</span><span class='Modifier'>⁼</span> <span class='Paren'>(</span><span class='Function'>√</span><span class='Number'>1</span><span class='Paren'>)</span> <span class='Function'>+</span> <span class='Paren'>(</span><span class='Function'>√</span><span class='Number'>9</span><span class='Paren'>)</span>
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<span class='Number'>1</span> <span class='Function'>+</span><span class='Modifier2'>⌾</span><span class='Function'>√</span> <span class='Number'>9</span>
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