diff --git a/spaces/S000108/README.md b/spaces/S000108/README.md index 1df5c7a51..6da25602e 100644 --- a/spaces/S000108/README.md +++ b/spaces/S000108/README.md @@ -1,12 +1,8 @@ --- uid: S000108 -name: Stone-Cech compactification of the integers +name: Stone-Čech compactification $\beta\omega$ of the integers aliases: - - Beta N - - βN - - Beta Z - - Beta omega - - Stone-Cech compactification of the natural numbers + - $\beta\mathbb{N}$ counterexamples_id: 111 refs: - zb: "0386.54001" @@ -15,10 +11,11 @@ refs: name: Stone–Čech compactification on Wikipedia --- -$\beta \omega$ is the set of all ultrafilters on $\omega=\{0,1,2\dots\}$, -where we identify $n$ with the principal ultrafilter containing $n$. -The topology on $\beta\omega$ is generated by all sets of the form -$\overline U = \{F \in \beta\omega : U \in F\}$ for $U \subset \omega$. +The Stone-Čech compactification of {S2}. +One way to describe $X=\beta \omega$ is as the set of all ultrafilters on $\omega=\{0,1,2\dots\}$, +where we identify $n \in \omega$ with the principal ultrafilter containing $n$. +The topology on $X$ is generated by all sets of the form +$\overline U = \{F \in \beta\omega : U \in F\}$ for $U \subseteq \omega$. -Defined as counterexample #111 ("Stone-Cech Compactification of the Integers") +Defined as counterexample #111 ("Stone-Čech Compactification of the Integers") in {{zb:0386.54001}}.