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Let
$\Omega $
be a connected open set in the plane and
$\gamma : [0,1] \to \overline {\Omega }$
a path such that
$\gamma ((0,1)) \subset \Omega $
. We show that the path
$\gamma $
can be “pulled tight” to a unique shortest path which is homotopic to
$\gamma $
, via a homotopy h with endpoints fixed whose intermediate paths
$h_t$
, for
$t \in [0,1)$
, satisfy
$h_t((0,1)) \subset \Omega $
. We prove this result even in the case when there is no path of finite Euclidean length homotopic to
$\gamma $
under such a homotopy. For this purpose, we offer three other natural, equivalent notions of a “shortest” path. This work generalizes previous results for simply connected domains with simple closed curve boundaries.
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