Closed loop

<h2 id="mathematics">Mathematics</h2>
<ul><li><a href="/facts/Loop_(topology)/mgtE53Ty">Loop (topology)</a></li>
<li><a href="/facts/Closed_curve/xBQ0pTBW">Closed curve</a></li></ul>
<h2 id="technology">Technology</h2>
<ul><li>A closed feedback loop:
<ul><li><a href="/facts/Closed-loop_transfer_function/D1A3AA7q">Closed-loop transfer function</a></li>
<li><a href="/facts/Electronic_feedback_loop/XnuWH3zp">Electronic feedback loop</a></li>
<li><a href="/facts/PID_controller/7XcYk0CH">PID controller</a></li></ul></li>
<li><a href="/facts/Closed_ecological_system/Eky6mKwS">Closed ecological system</a></li>
<li><a href="/facts/Closed-loop_communication/HXT0wBn7">Closed-loop communication</a></li>
<li><a href="/facts/Ecological_sanitation/00LAcdD9">Ecological sanitation</a> systems or ecosan</li></ul>
<h2 id="other-uses">Other uses</h2>
<ul><li><a href="/facts/Circular_economy/13UFemv7">Circular economy</a>, with materials recycled</li>
<li><a href="/facts/Closed_time_loop/eo0NPsa6">Closed time loop</a>, a paradox of time travel</li>
<li><a href="/facts/Knot_loop/6YVpedtK">Knot loop</a>, in a knot</li></ul>

Closed loop open-in-new

Closed loop