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<p>2001:1715:4E2A:80B0:2050:904A:247D:A9E: /* Technology */</p> <hr /> <div>'''Closed loop''' or '''closed-loop''' may refer to:<br /> {{tocright}}<br /> ==Mathematics==<br /> * [[Loop (topology)]]<br /> * [[Closed curve]]<br /> <br /> ==Technology==<br /> * A closed feedback loop:<br /> ** [[Closed-loop transfer function]]<br /> ** [[Electronic feedback loop]]<br /> ** [[PID controller]]<br /> * [[Closed ecological system]]<br /> * [[Closed-loop communication]]<br /> * [[Ecological sanitation]] systems or ecosan<br /> <br /> ==Other uses==<br /> * [[Circular economy]], with materials recycled<br /> * [[Closed time loop]], a paradox of time travel<br /> * [[Knot loop]], in a knot<br /> <br /> {{disambiguation}}</div>

2001:1715:4E2A:80B0:2050:904A:247D:A9E