Locally connected fan

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The locally connected fan, written $F_{\omega}$, is the union of countably many straight line segments of length tending to $0$, emanating from a point $p$ and disjoint away from $p$. We can think of $F_{\omega}$ as the dendrite with only one ramification point whose order is $\omega$.

Locally connected fan.gif


Theorem: $F_{\omega}$ is universal in the class of all $n$-ods.


Theorem: Each open image of $F_{\omega}$ is homeomorphic to $F_{\omega}$.


Theorem: A confluent mapping defined on $F_{\omega}$ is open if and only if it is light.