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18B25 Topoi (7 articles)

• Borceux, Francis; Bourn, Dominique; Johnstone, Peter: Initial normal covers in bi-Heyting toposes. (English). Archivum Mathematicum, vol. 42 (2006), issue 4, pp. 335-356
• Banaschewski, B.: On the injectivity of Boolean algebras. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 3, pp. 501-511
• Banaschewski, B.: Bourbaki's Fixpoint Lemma reconsidered. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 33 (1992), issue 2, pp. 303-309
• Schwarz, Friedhelm: Extensionable topological hulls and topological universe hulls inside the category of pseudotopological spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 31 (1990), issue 1, pp. 123-127
• Koslowski, Jürgen: Topological hulls revisited. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 30 (1989), issue 2, pp. 213-225
• Borceux, Francis; Pedicchio, M. Cristina: De Morgan's and strong De Morgan's laws in a topos of shaves. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 28 (1987), issue 2, pp. 9-12
• Adámek, Jiří; Herrlich, Horst: Cartesian closed categories, quasitopoi and topological universes. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 2, pp. 235-257