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Author: Herrlich, Horst

• Herrlich, Horst; Tachtsis, Eleftherios: On the solvability of systems of linear equations over the ring $\mathbb{Z}$ of integers. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 58 (2017), issue 2, pp. 241-260
• Herrlich, Horst; Howard, Paul; Keremedis, Kyriakos: On preimages of ultrafilters in ZF. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 57 (2016), issue 2, pp. 241-252
• Herrlich, Horst; Keremedis, Kyriakos: On the metric reflection of a pseudometric space in ZF. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 56 (2015), issue 1, pp. 77-88
• Herrlich, Horst; Howard, Paul; Tachtsis, Eleftherios: On special partitions of Dedekind- and Russell-sets. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 53 (2012), issue 1, pp. 105-122
• Herrlich, Horst; Keremedis, Kyriakos: AC holds iff every compact completely regular topology can be extended to a compact Tychonoff topology. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 52 (2011), issue 1, pp. 139-143
• Herrlich, Horst; Tachtsis, Eleftherios: On the number of Russell's socks or $2+2+2+\dots=\text{?}$. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 47 (2006), issue 4, pp. 707-717
• Herrlich, Horst; Keremedis, Kyriakos; Tachtsis, Eleftherios: Countable sums and products of Loeb and selective metric spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 46 (2005), issue 2, pp. 373-384
• Herrlich, Horst: Products of Lindelöf $T_2$-spaces are Lindelöf – in some models of ZF. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 43 (2002), issue 2, pp. 319-333
• Schröder, Lutz; Herrlich, Horst: Abstract initiality. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 41 (2000), issue 3, pp. 575-583
• Herrlich, Horst; Hušek, Miroslav: Productivity of coreflective classes of topological groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 40 (1999), issue 3, pp. 551-560
• Herrlich, Horst; Keremedis, Kyriakos: Products, the Baire category theorem, and the axiom of dependent choice. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 40 (1999), issue 4, pp. 771-775
• Herrlich, Horst: Choice principles in elementary topology and analysis. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 38 (1997), issue 3, pp. 545-552
• Herrlich, Horst; Strecker, George E.: When is $\bold N$ Lindelöf?. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 38 (1997), issue 3, pp. 553-556
• Herrlich, Horst: Realizations of topologies and closure operators by set systems and by neighbourhoods. (English). Archivum Mathematicum, vol. 25 (1989), issue 1, pp. 83-87
• Herrlich, Horst: Sequential structures induced by merotopies. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 29 (1988), issue 4, pp. 679-683
• Adámek, Jiří; Herrlich, Horst: Cartesian closed categories, quasitopoi and topological universes. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 2, pp. 235-257
• Beattie, Ronald; Butzmann, Heinz-Peter; Herrlich, Horst: Filter convergence via sequential convergence. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 1, pp. 69-81
• Adámek, Jiří; Herrlich, Horst; Strecker, George E.: Least and largest initial completions. I. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 20 (1979), issue 1, pp. 43-58
• Adámek, Jiří; Herrlich, Horst; Strecker, George E.: Least and largest initial completions. II. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 20 (1979), issue 1, pp. 59-77
• Bentley, H. L.; Herrlich, Horst: Completion as reflection. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 19 (1978), issue 3, pp. 541-568
• Herrlich, Horst: Reflective Mac Neille completions of fibre-small categories need not be fibre-small. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 19 (1978), issue 1, pp. 147-149
• Bentley, H. L.; Herrlich, Horst; Robertson, W. A.: Convenient categories for topologists. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 2, pp. 207-227
• Herrlich, Horst: Epireflective subcategories of TOP need not be cowell-powered. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 4, pp. 713-716