Let $X$ be a metric space that is connected and $\sigma$-locally compact (by which I mean that there is a countable family of compact subsets of $X$ whose interiors cover $X$).

Does every point in $X$ necessarily admit a neighbourhood that is both compact and connected?


Okay, I just found an answer, in the paper http://www.few.vu.nl/~dijkstra/research/papers/sinecurve.pdf. The answer is no; just take a "punctured topologist's sine curve"

$$ X \ := \ \{(0,y) : y \in [-1,1) \} \, \cup \, \{ (x,\sin(\tfrac{1}{x})) : x \in (0,1] \}. $$

It is clear that for every $r \in [-1,1)$, if $A$ is a connected neighbourhood of $(0,r)$ then $A$ contains $\{ (x,\sin(\tfrac{1}{x})) : x \in (0,\varepsilon] \}$ for some $\varepsilon>0$; but then if $A$ is also closed, then $A$ must also contain $\{(0,y) : y \in [-1,1) \}$. So $A$ cannot be compact.


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