Trivial Topological Space is Non-Meager
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Theorem
Let $T = \struct {S, \tau}$ be a trivial topological space.
Then $T$ is non-meager.
Proof
As $T$ is a trivial topological space, by definition $S$ is a singleton: $S = \set s$, say.
Then $\set s$ is an open set.
That is, $s$ is an open point.
The result follows from Space with Open Point is Non-Meager.
$\blacksquare$
Sources
- 1978: Lynn Arthur Steen and J. Arthur Seebach, Jr.: Counterexamples in Topology (2nd ed.) ... (previous) ... (next): Problems: Section $1: \ 4$