Modified Fort Space is Totally Disconnected
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Theorem
Let $T = \struct {S, \tau_{a, b} }$ be a modified Fort space.
Then $T$ is totally disconnected.
Proof
We have:
We also have:
Hence the result.
$\blacksquare$
Sources
- 1978: Lynn Arthur Steen and J. Arthur Seebach, Jr.: Counterexamples in Topology (2nd ed.) ... (previous) ... (next): Part $\text {II}$: Counterexamples: $27$. Modified Fort Space: $4$