Author: Logunov, Sergei

Logunov, Sergei: On butterfly-points in $\beta X$, Tychonoff products and weak Lindelöf numbers. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 63 (2022), issue 3, pp. 379-383
Logunov, Sergei: On non-normality points, Tychonoff products and Suslin number. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 63 (2022), issue 1, pp. 131-134
Logunov, Sergei: On Szymański theorem on hereditary normality of $\beta\omega$. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 63 (2022), issue 4, pp. 507-512

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