Arc-Connected Space is not necessarily Locally Arc-Connected
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Theorem
Let $T = \struct {S, \tau}$ be a topological space which is arc-connected.
Then it is not necessarily the case that $T$ is also locally arc-connected.
Proof
Let $T$ be the extended topologist's sine curve.
From Extended Topologist's Sine Curve is Arc-Connected, $T$ is an arc-connected space.
From Extended Topologist's Sine Curve is not Locally Arc-Connected, $T$ is not a locally arc-connected space.
Hence the result.
$\blacksquare$
Sources
- 1978: Lynn Arthur Steen and J. Arthur Seebach, Jr.: Counterexamples in Topology (2nd ed.) ... (previous) ... (next): Part $\text I$: Basic Definitions: Section $4$: Connectedness