On remote points, non-normality and $\pi$-weight $\omega_1$
Commentationes Mathematicae Universitatis Carolinae, Tome 42 (2001) no. 2, pp. 379-384.

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We show, in particular, that every remote point of $X$ is a nonnormality point of $\beta X$ if $X$ is a locally compact Lindelöf separable space without isolated points and $\pi w(X)\leq \omega _{1}$.
Classification : 54D20, 54D35, 54D40
Keywords: remote point; butterfly-point; nonnormality point
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Logunov, Sergei. On remote points, non-normality and $\pi$-weight $\omega_1$. Commentationes Mathematicae Universitatis Carolinae, Tome 42 (2001) no. 2, pp. 379-384. http://geodesic.mathdoc.fr/item/CMUC_2001__42_2_a14/