Closed curve
= Closed curve
A <curve> $\gamma:[0,1]\to X$ whose endpoints agree, $\gamma(0)=\gamma(1)$. This is the same unbased notion as a <loop (topology)>; self-intersections are allowed.
= Closed curve
A <curve> $\gamma:[0,1]\to X$ whose endpoints agree, $\gamma(0)=\gamma(1)$. This is the same unbased notion as a <loop (topology)>; self-intersections are allowed.