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18A40 Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) (68 articles)

• Hager, Anthony W.; Wynne, Brian: The category of compactifications and its coreflections. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 63 (2022), issue 3, pp. 365-378
• Dimitric, Radoslav: Kappa-Slender Modules. (English). Communications in Mathematics, vol. 28 (2020), issue 1, pp. 1-12
• Dube, Themba: When spectra of lattices of $z$-ideals are Stone-Čech compactifications. (English). Mathematica Bohemica, vol. 142 (2017), issue 3, pp. 323-336
• Ball, Richard N.; Hager, Anthony W.: Frame monomorphisms and a feature of the $l$-group of Baire functions on a topological space. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 54 (2013), issue 2, pp. 141-157
• Solovyov, Sergey A.: On fuzzification of the notion of quantaloid. (English). Kybernetika, vol. 46 (2010), issue 6, pp. 1025-1048
• Martínez, Jorge: Archimedean frames, revisited. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 49 (2008), issue 1, pp. 25-44
• Močkoř, Jiří: Extensional subobjects in categories of $\Omega$-fuzzy sets. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 2, pp. 631-645
• Chajda, Ivan; Hošková, Šárka: A factorization of quasiorder hypergroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 4, pp. 573-581
• Chvalina, Jan; Hošková, Šárka: Abelizations of weakly associative hyperstructures based on their direct squares. (English). Acta Mathematica et Informatica Universitatis Ostraviensis, vol. 11 (2003), issue 1, pp. 11-23
• Crhák, Tomáš: A construction of simplicial objects. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 42 (2001), issue 1, pp. 1-21
• Adámek, Jiří; Sousa, Lurdes; Tholen, Walter: Totality of product completions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 41 (2000), issue 1, pp. 9-24
• Rother, R.: Universal objects in quasiconstructs. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 41 (2000), issue 1, pp. 25-39
• Herrlich, Horst; Hušek, Miroslav: Productivity of coreflective classes of topological groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 40 (1999), issue 3, pp. 551-560
• Banaschewski, B.; Pultr, A.: Booleanization of uniform frames. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 37 (1996), issue 1, pp. 135-146
• Picado, Jorge: On extended frames. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 36 (1995), issue 3, pp. 537-549
• Skula, Ladislav: Maximal reflectivity preserving subextensions. (English). Acta Mathematica et Informatica Universitatis Ostraviensis, vol. 1 (1993), issue 1, pp. 59-66
• Clementino, Maria Manuel: $\Cal T_0$- and $\Cal T_1$-reflections. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 33 (1992), issue 3, pp. 493-504
• Brümmer, G. C. L.; Giuli, E.: A categorical concept of completion of objects. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 33 (1992), issue 1, pp. 131-147
• Ploščica, Miroslav: A duality for isotropic median algebras. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 33 (1992), issue 3, pp. 541-550
• Frič, R.; Kent, D. C.: Regular $\cal L$-spaces. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 3, pp. 475-486
• Börger, Reinhard; Tholen, Walter: Totality of colimit closures. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 32 (1991), issue 4, pp. 761-768
• Adámek, Jiří; Rosický, Jiří: Reflections in locally presentable categories. (English). Archivum Mathematicum, vol. 25 (1989), issue 1, pp. 89-94
• Stramaccia, Luciano: Some remarks on preservation of topological products. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 30 (1989), issue 1, pp. 95-99
• Trnková, Věra; Hušek, Miroslav: Non-constant continuous maps of modifications of topological spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 29 (1988), issue 4, pp. 747-765
• Berger, Sergej M.: On deductive varieties of locally convex spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 29 (1988), issue 3, pp. 465-475
• Mijoule, Richard: La théorie des fonctions indexées en récursivité. (French) [The theory of indexed functions in recursion]. Archivum Mathematicum, vol. 23 (1987), issue 4, pp. 191-206
• Tozzi, A.; Wyler, O.: On categories of supertopological spaces. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 28 (1987), issue 2, pp. 137-149
• Hébert, Michel: On the reflective hull problem. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 28 (1987), issue 4, pp. 603-606
• Rice, Michael D.: Atoms in the family of coreflective subcategories of uniform spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 2, pp. 209-220
• 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
• Szigeti, Jenö: A note on reflective subcategories defined by partial algebras. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 25 (1984), issue 2, pp. 319-323
• Stramaccia, Luciano: Monomorphisms and epimorphisms of inverse systems. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 3, pp. 495-505
• Giuli, Eraldo: Topological categories with both epireflective and coreflective proper subcategories. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 3, pp. 481-488
• Frič, R.; Hušek, M.: Epireflective subcategories of convergence spaces. (English). In: Frolík, Z. (ed.): Abstracta. 8th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1980. pp. 68-72
• Börger, Reinhard: A generalization of component categories. (English). In: Frolík, Z. (ed.): Abstracta. 7th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1979. pp. 15-18
• Rosický, Jiří: Categories of models of infinitary Horn theories. (English). Archivum Mathematicum, vol. 14 (1978), issue 4, pp. 219-226
• Bentley, H. L.; Herrlich, Horst: Completion as reflection. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 19 (1978), issue 3, pp. 541-568
• Srivastava, Arun K.: Near reflections. (English). Czechoslovak Mathematical Journal, vol. 27 (1977), issue 4, pp. 619-625
• Menu, Jan: Reflective subcategories of Poset and Top. (English). In: Frolík, Z. (ed.): Abstracta. 5th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1977. pp. 51-60
• Vilímovský, Jiří: Uniform spaces with easy behavior with respect to coreflections. (English). In: Frolík, Z. (ed.): Abstracta. 5th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1977. pp. 103-107
• Tashjian, Gloria: Cartesian-closed coreflective subcategories of $\underline{Unif}$. (English). In: Novák, Josef (ed.): General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part B: Contributed Papers. Society of Czechoslovak Mathematicians and Physicist, Praha, 1977. pp. [454]-460
• Hušek, M.: Decompositions of adjoint situations. (English). In: Frolík, Z. (ed.): Abstracta. 4th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1976. pp. 11-13
• Rice, Michael D.: Equi-reflective subcategories of uniform spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1978. pp. 75-78
• Deleanu, Aristide; Hilton, Peter: Generalized shape theory. (English). In: General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part A: Invited papers. Springer, Berlin, 1977. pp. [56]-65
• Flachsmeyer, Jürgen: On envelopes in a certain category of ordered topological vector spaces. (English). In: Frolík, Z. (ed.): Abstracta. 4th Winter School on Abstract Analysis. Czechoslovak Academy of Sciences, Praha, 1976. pp. 9-10
• Gähler, W.: On reflective and coreflective subcategories of LIM, LUN, and LVEC. (English). In: Novák, Josef (ed.): General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part B: Contributed Papers. Society of Czechoslovak Mathematicians and Physicist, Praha, 1977. pp. 136-141
• Hušek, Miroslav; Rice, Michael D.: Productivity of coreflective subcategories of uniform spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1978. pp. 105-109
• Nel, L. D.: Subcategories with cartesian closed coreflective hull. (English). In: Novák, Josef (ed.): General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part B: Contributed Papers. Society of Czechoslovak Mathematicians and Physicist, Praha, 1977. pp. [329]-330
• Vilímovský, J.: Uniformly continuous Banach valued mappings. (English). In: Novák, Josef (ed.): General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part B: Contributed Papers. Society of Czechoslovak Mathematicians and Physicist, Praha, 1977. pp. [481]-484
• Herrlich, Horst: Epireflective subcategories of TOP need not be cowell-powered. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 4, pp. 713-716
• Vilímovský, Jiří: Reflections on distal spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1976. pp. 69-72
• Menu, Jan; Pultr, Aleš: Simply (co)reflective subcategories of the categories determined by poset-valued functors. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 1, pp. 161-172
• Pelant, Jan; Vilímovský, Jiří: Two examples of reflections. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1976. pp. 63-68
• Hušek, Miroslav; Pelant, Jan: Note about atom-categories of topological spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 4, pp. 767-773
• Rosický, Jiří: On extensions of full embeddings and binding categories. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 4, pp. 631-653
• Tiller, John: Unions in $E-M$ categories and coreflective subcategories. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 1, pp. 173-187
• Vilímovský, Jiří: Categorial refinements and their relation to reflective subcategories. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 83-111
• Kůrková-Pohlová, Věra: Fine and simply fine uniform spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 127-137
• Rödl, Vojtěch: Fineness in the category of all 0-dimensional uniform spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 139-143
• Frolík, Zdeněk: Four functors into paved spaces. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 27-72
• Rosický, Jiří: Full embeddings with a given restriction. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 14 (1973), issue 3, pp. 519-540
• Vilímovský, Jiří: Generation of coreflections in categories. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 14 (1973), issue 2, pp. 305-323
• Pelant, Jan: Lattice of $E$-compact topological spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 14 (1973), issue 4, pp. 719-738
• Pelant, Jan: One folkloristic lemma on cardinal reflections in Unif. (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 145-147
• Hušek, Miroslav: Reflective and coreflective subcategories of Unif (and Top). (English). In: Frolík, Zdeněk (ed.): Seminar Uniform Spaces. , 1975. pp. 113-126
• Kůrka, Petr: The Heyting doctrines. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 4, pp. 643-657
• Skula, L.: Die Fortsetzung stetiger Homomorphismen von $\delta$-Halbgruppen. (German) [The continuation of conitinous homomorphisms of $\delta$-semigroups]. In: Novák, J. (ed.): General Topology and its Relations to Modern Analysis and Algebra. Proceedings of the Third Prague Topological Symposium, 1971. Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1972. pp. 401-404
• Shukla, W.: Remarks on free objects in categories. (English). In: Franklin, S. P., Frolík, Z. and Koutník, V. (eds.): General Topology and Its Relations to Modern Analysis and Algebra. Proceedings of the Kanpur topological conference, 1968. Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1971. pp. 239-243