Edit Profile (opens in new tab) Šostak, Alexander P. Co-Author Distance Author ID: sostak.alexander-p Published as: Šostak, Alexander; Shostak, A. P.; Šostak, A. P.; Šostak, Alexander P.; Šostak, A.; Sostak, A. P.; Šostaks, Aleksandrs; Shostak, Alexander; Shostak, A.; Shostak, Aleksander P.; Šostak, Aleksander P.; Shostak, Aleksander; Şostak, Alexander; Šostak, Alexandr; Sostak, A. more...less External Links: Wikidata · IdRef Documents Indexed: 111 Publications since 1972 6 Contributions as Editor Reviewing Activity: 106 Reviews Co-Authors: 50 Co-Authors with 67 Joint Publications 820 Co-Co-Authors all top 5 Co-Authors 49 single-authored 12 Uļjane, Ingrǐda 5 Bregman, Yuriĭ Kh. 5 Han, Sang-Eon 4 Eļkins, Aleksandrs 4 Gutiérrez García, Javier 4 Höhle, Ulrich 3 Asmuss, Svetlana V. 3 Aygün, Halis 3 Kubiak, Tomasz 3 Mardešić, Sibe 3 Shapirovskii, B. E. 2 Čerin, Zvonko Tomislav 2 de Prada Vicente, María Angeles 2 Dzhajanbajev, D. 2 Eklund, Patrik E. 2 Varol, Banu Pazar 1 Abel, Mati 1 Adnadjević, Dušan 1 Bēts, Raivis 1 Brown, Lawrence Michael 1 Burgin, Mark 1 Çetkin, Vildan 1 Chovanec, Ferdinand 1 Čimoka, Dace 1 Dizman, Tugbahan Simsekler 1 Dubey, Maneesh Kumar 1 Grecova, Svetlana 1 Grigorenko, Olga 1 Gvazava, M. V. 1 Junnila, Heikki J. K. 1 Kalina, Martin 1 Kim, In-Soo 1 Kóczy, László T. 1 Markin, Sergej A. 1 Medina-Moreno, Jesús 1 Mesiar, Radko 1 Miñana, Juan-José 1 Nánásiová, Olga 1 Porst, Hans-Eberhard 1 Pujate, L. 1 Ramírez-Poussa, Eloisa 1 Rodabaugh, Stephen Ernest 1 Shteinbuk, Veniamin 1 Shtejnbuk, V. B. 1 Sondore, Anita 1 Štěpnička, Martin 1 Steprāns, Juris 1 Szymanski, Andrzej A. 1 Tiwari, S. P. 1 Yuksel, Saziye 1 Zhong, Yu all top 5 Serials 13 Fuzzy Sets and Systems 4 Latviĭskiĭ Matematicheskiĭ Ezhegodnik 4 Topology and its Applications 3 Matematički Vesnik 3 Quaestiones Mathematicae 3 Soviet Mathematics. Doklady 3 Iranian Journal of Fuzzy Systems 2 Russian Mathematical Surveys 2 Commentationes Mathematicae Universitatis Carolinae 2 Zbornik Radova Filozofskog Fakulteta u Nisu. Serija Matematika 2 Journal of Mathematical Sciences (New York) 2 Filomat 2 Soft Computing 2 Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences 2 Applied General Topology 2 Hacettepe Journal of Mathematics and Statistics 2 Latvijas Universitātes Zinātniskie Raksti 2 Topologicheskie Prostranstva i Ikh Otobrazheniya 1 Časopis Pro Pěstování Matematiky 1 Czechoslovak Mathematical Journal 1 Functional Analysis and its Applications 1 Information Sciences 1 Kybernetika 1 Semigroup Forum 1 Radovi Matematički 1 International Journal of Approximate Reasoning 1 Mathematica Bohemica 1 Glasnik Matematički. Serija III 1 Serdica 1 Bulletin de l’Académie Polonaise des Sciences. Série des Sciences Mathématiques 1 Tatra Mountains Mathematical Publications 1 Rad Hrvatske Akademije Znanosti i Umjetnosti. Matematičke Znanosti 1 Topology Proceedings 1 Computational and Applied Mathematics 1 Abstract and Applied Analysis 1 Journal of Applied Mathematics and Computing 1 Journal of Electrical Engineering 1 Bulletin de l’Académie Polonaise des Sciences, Série des Sciences Mathématiques, Astronomiques et Physiques 1 Supplemento ai Rendiconti del Circolo Matemàtico di Palermo. Serie II 1 Studies in Computational Intelligence 1 Applied General Topology 1 TWMS Journal of Pure and Applied Mathematics 1 Axioms all top 5 Fields 96 General topology (54-XX) 27 Mathematical logic and foundations (03-XX) 16 Category theory; homological algebra (18-XX) 12 Computer science (68-XX) 6 General and overarching topics; collections (00-XX) 5 Order, lattices, ordered algebraic structures (06-XX) 5 Functional analysis (46-XX) 3 Group theory and generalizations (20-XX) 3 Real functions (26-XX) 3 Approximations and expansions (41-XX) 3 Algebraic topology (55-XX) 2 Measure and integration (28-XX) 1 History and biography (01-XX) 1 Combinatorics (05-XX) 1 Probability theory and stochastic processes (60-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 81 Publications have been cited 1,022 times in 595 Documents Cited by ▼ Year ▼ Axiomatic foundations of fixed-basis fuzzy topology. Zbl 0977.54006 Höhle, U.; Šostak, A. P. 244 1999 On a fuzzy topological structure. Zbl 0638.54007 Šostak, A. P. 160 1985 E-compact extensions of topological spaces. Zbl 0301.54027 Shostak, A. P. 73 1974 Two decades of fuzzy topology: Basic ideas, notions, and results. Zbl 0716.54004 Shostak, A. P. 69 1989 A general theory of fuzzy topological spaces. Zbl 0948.54003 Höhle, Ulrich; Šostak, Alexander 44 1995 Basic structures of fuzzy topology. Zbl 0857.54003 Šostak, A. P. 41 1996 Lower set-valued fuzzy topologies. Zbl 0890.54005 Kubiak, T.; Šostak, A. 34 1997 A unified approach to the concept of fuzzy \(L\)-uniform space. Zbl 1061.54006 Gutiérrez García, J.; de Prada Vicente, M. A.; Šostak, A. P. 31 2003 A compression of digital images derived from a Khalimsky topological structure. Zbl 1300.54012 Han, Sang-Eon; Šostak, A. 21 2013 On compactness and connectedness degrees of fuzzy sets in fuzzy topological spaces. Zbl 0638.54008 Shostak, A. P. 18 1988 On the neighbourhood structure of fuzzy topological spaces. Zbl 0713.54008 Šostak, A. P. 16 1990 Categories of fuzzy topology in the context of graded ditopologies on textures. Zbl 1419.54007 Šostak, Alexander; Brown, Lawrence M. 14 2014 Towards the theory of \(\mathbb M\)-approximate systems: Fundamentals and examples. Zbl 1222.54008 Šostak, Alexander 12 2010 A fuzzification of the category of \(M\)-valued \(L\)-topological spaces. Zbl 1069.54007 Kubiak, Tomasz; Šostak, Alexander P. 12 2004 A new approach to soft topology. Zbl 1276.54007 Varol, Banu Pazar; Shostak, Alexander; Aygün, Halis 11 2012 Towards the theory of \(L\)-bornological spaces. Zbl 1253.46077 Abel, M.; Šostak, A. 9 2011 On the measure of \(M\)-rough approximation of \(L\)-fuzzy sets. Zbl 1398.03178 Han, Sang-Eon; Šostak, Alexander 9 2018 On some modifications of fuzzy topology. Zbl 0705.54007 Shostak, A. P. 8 1989 Fuzzy categories related to algebra and topology. Zbl 0947.18001 Šostak, Alexander 8 1999 Fuzzifying topology induced by a strong fuzzy metric. Zbl 1378.54012 Miñana, Juan-José; Šostak, Alexander 8 2016 On approximate-type systems generated by \( L\)-relations. Zbl 1461.03052 Han, Sang-Eon; Kim, In Soo; Šostak, Alexander 8 2014 On partition of topological spaces. Zbl 0539.54005 Bregman, Yu. K.; Shapirovskij, B. Eh.; Shostak, A. P. 7 1984 Mathematics. (Matemātika.) Zbl 0834.00012 7 1994 Editorial to the “Special issue on fuzzy topology”. Zbl 0867.54003 Höhle, U.; Rodabaugh, S. E.; Šostak, A. 7 1995 Fuzzification of the theory of continuous functions. Zbl 0828.26015 Burgin, Mark; Šostak, Alexandr 7 1994 On a category for fuzzy topology. Zbl 0685.54006 Šostak, A. P. 7 1988 On a fuzzy uniform structure. Zbl 0809.54008 Dzhajanbajev, D.; Šostak, A. P. 6 1992 Another approach to the concept of a fuzzy proximity. Zbl 0789.54004 Markin, Sergej A.; Šostak, Alexander P. 6 1992 A fuzzy modification of the category of linearly ordered spaces. Zbl 0594.54003 Shostak, A. 6 1985 M-valued measure of roughness for approximation of \(L\)-fuzzy sets and its topological interpretation. Zbl 1462.03022 Han, Sang-Eon; Šostak, Alexander 6 2016 Some remarks on Borsuk’s fundamental metric. Zbl 0455.54029 Čerin, Z. T.; Šostak, A. P. 5 1980 \(L\)-fuzzy syntopogenous structures. I: Fundamentals and application to \(L\)-fuzzy topologies, \(L\)-fuzzy proximities and \(L\)-fuzzy uniformities. Zbl 1314.54004 Čimoka, Dace; Šostak, Alexander 5 2013 \(L\)-valued bornologies on powersets. Zbl 1374.46056 Šostak, Alexander; Uļjane, Ingrīda 5 2016 On a category of extensional fuzzy rough approximation \(L\)-valued spaces. Zbl 1455.03069 Eļkins, Aleksandrs; Šostak, Alexander; Uļjane, Ingrīda 5 2016 On a class of topological spaces containing all bicompact and all connected spaces. Zbl 0369.54006 Sostak, A. 4 1977 On semigroups of continuous transformations of fuzzily structured sets. Zbl 0761.54006 Shteinbuk, V. B.; Šostak, A. P. 4 1991 Even fuzzy topologies and related structures. Zbl 0896.54003 Gutiérrez García, Javier; De Prada Vicente, M. A.; Šostak, A. 4 1997 Categories related to topology viewed as soft sets. Zbl 1254.54013 Varol, Banu Pazar; Shostak, Alexander; Aygün, Halis 4 2011 Towards the theory of approximate systems: variable range categories. Zbl 1301.03044 Šostak, Alexander 4 2012 On the concept of E-regularity for fuzzy topology. Zbl 0714.54004 Šostak, A. 3 1989 Restricted compactness properties and their preservation under products. Zbl 0962.54020 Steprāns, Juris; Šostak, Alexander P. 3 2000 \(L\)-valued categories generalities and examples related to algebra and topology. Zbl 1068.18001 Šostak, Alexander P. 3 2004 A fuzzy modification of a linearly ordered space. Zbl 0605.54007 Shostak, A. P. 3 1985 Fuzzy syntopogeneous structures. Zbl 0890.54002 Šostak, Alexander P. 3 1997 Bornological structures on many-valued sets. Zbl 1390.54009 Šostak, Alexander; Uļjane, Ingrīda 3 2017 \(L^M\)-valued equalities, \(L^M\)-rough approximation operators and \(ML\)-graded ditopologies. Zbl 1372.54011 Šostak, Alexander; Eļkins, Aleksandrs 3 2017 Some remarks on fuzzy \(k\)-pseudometric spaces. Zbl 1499.54065 Šostak, Alexander 3 2018 On cardinal functions of fuzzy sets in fuzzy topological spaces. I. Zbl 0718.54016 Šostak, A. P. 2 1990 Fuzzy cardinals and cardinalities of fuzzy sets. Zbl 0800.04006 Šostak, A. 2 1989 A theorem on decomposition into compact-scattered subspaces and cardinality of topological spaces. Zbl 0806.54003 Bregman, Yu. H.; Shapirovskij, B. E.; Šostak, A. P. 2 1994 On inductive dimensions for fuzzy topological spaces. Zbl 0867.54004 Adnadjević, D.; Šostak, A. P. 2 1995 On endomorphism semigroups of a fuzzily structured set. Zbl 0861.54004 Shteinbuk, Veniamin; Šostak, Alexander 2 1992 Shapes in classes of compactness: retracts, extensors, movability. Zbl 0416.54010 Shostak, A. P. 2 1975 On completeness and precompactness spectra of fuzzy sets in fuzzy uniform spaces. Zbl 0697.54005 Shostak, Aleksander; Dzhayanbaev, D. 2 1990 Extremal problems of approximation theory of fuzzy sets. Zbl 1126.41305 Asmuss, Svetlana V.; Šostak, Alexander P. 2 1997 On some fuzzy categories related to category \(L\)-TOP of \(L\)-topological spaces. Zbl 1052.54005 Šostak, A. P. 2 2003 An approach to the concept of soft fuzzy proximity. Zbl 1474.54036 Çetkin, Vildan; Šostak, Alexander P.; Aygün, Halis 2 2014 A construction of a fuzzy topology from a strong fuzzy metric. Zbl 1353.54009 Grecova, Svetlana; Šostak, Alexander; Uljane, Ingrīda 2 2016 A new definition of fuzzy \(k\)-pseudo metric and its induced fuzzifying structures. Zbl 1505.54018 Zhong, Y.; Šostak, A. 2 2021 Soft ditopological spaces. Zbl 1461.54012 Dizman, Tugbahan Simsekler; Šostak, Alexander; Yuksel, Saziye 2 2016 Variable-range approximate systems induced by many-valued \(L\)-relations. Zbl 1432.03107 Eļkins, Aleksandrs; Han, Sang-Eon; Šostak, Alexander 2 2014 Aggregation operators in fuzzy relational mathematical morphology: erosion and dilation. Zbl 1471.68297 Šostak, Alexander; Uljane, Ingrīda; Eklund, Patrik 2 2022 On the stratification test of metrizability of topological spaces. Zbl 0562.54040 Shostak, A. P. 1 1983 Extremal problems of approximation theory in fuzzy contact. Zbl 0956.41012 Asmuss, Svetlana V.; Šostak, Alexander P. 1 1999 On clp-compact and countably clp-compact spaces. Zbl 0917.54030 Sondore, A.; Šostak, A. 1 1994 Connectedness degree of fuzzy sets in fuzzy topological spaces. Zbl 0725.54008 Shostak, A. P. 1 1988 Ideal-valued topological structures. Zbl 1210.54012 Gutiérrez García, Javier; Kubiak, T.; Šostak, A. P. 1 2010 On decomposition of a space into certain subsets and \({\text cl}\)- cardinality of a topological space. Zbl 0806.54002 Bregman, Yu. H.; Shapirovskij, B. E.; Šostak, A. P. 1 1994 Shape equivalence in compactness classes. Zbl 0292.54051 Sostak, A. P. 1 1974 On stratifiable fuzzy topological spaces. Zbl 0786.54007 Šostak, Alexander P. 1 1992 Some criteria of the final compactness of strongly paracompact spaces. Zbl 0439.54017 Shostak, A. P. 1 1979 On zero-dimensionality in fuzzy topology. Zbl 0724.54010 Pujate, L.; Šostak, A. 1 1990 The compactness degree of fuzzy subsets in fuzzy topological spaces. Zbl 0668.54005 Shostak, A. P. 1 1988 Fuzzy functions and an extension of the category \(L\)-Top of Chang-Goguen \(L\)-topological spaces. Zbl 1019.54006 Šostak, Alexander P. 1 2002 Fuzzy functions: A fuzzy extension of the category SET and some related categories. Zbl 0977.03028 Höhle, Ulrich; Porst, Hans-E.; Šostak, Alexander P. 1 2000 Manifestation of fuzzy topology in other fuzzy mathematical structures. Zbl 1498.54013 Šostak, Alexander; Uļjane, Ingrǐda 1 2021 On the measure of many-level fuzzy rough approximation for \(L\)-fuzzy sets. Zbl 1512.68380 Šostak, Alexander; Uljane, Ingrida; Elkins, Aleksandrs 1 2020 Fuzzy relational mathematical morphology: erosion and dilation. Zbl 1523.68163 Šostak, Alexander; Uljane, Ingrīda; Eklund, Patrik 1 2020 Computational intelligence and mathematics for tackling complex problems. Zbl 1415.68006 1 2020 George-Veeramani fuzzy metrics revised. Zbl 1432.03112 Šostak, Alexander 1 2018 Categories of quantale-valued fuzzy automata: determinization and minimization. Zbl 1495.18004 Dubey, M. K.; Tiwari, S. P.; Šostak, Alexander 1 2020 Aggregation operators in fuzzy relational mathematical morphology: erosion and dilation. Zbl 1471.68297 Šostak, Alexander; Uljane, Ingrīda; Eklund, Patrik 2 2022 A new definition of fuzzy \(k\)-pseudo metric and its induced fuzzifying structures. Zbl 1505.54018 Zhong, Y.; Šostak, A. 2 2021 Manifestation of fuzzy topology in other fuzzy mathematical structures. Zbl 1498.54013 Šostak, Alexander; Uļjane, Ingrǐda 1 2021 On the measure of many-level fuzzy rough approximation for \(L\)-fuzzy sets. Zbl 1512.68380 Šostak, Alexander; Uljane, Ingrida; Elkins, Aleksandrs 1 2020 Fuzzy relational mathematical morphology: erosion and dilation. Zbl 1523.68163 Šostak, Alexander; Uljane, Ingrīda; Eklund, Patrik 1 2020 Computational intelligence and mathematics for tackling complex problems. Zbl 1415.68006 1 2020 Categories of quantale-valued fuzzy automata: determinization and minimization. Zbl 1495.18004 Dubey, M. K.; Tiwari, S. P.; Šostak, Alexander 1 2020 On the measure of \(M\)-rough approximation of \(L\)-fuzzy sets. Zbl 1398.03178 Han, Sang-Eon; Šostak, Alexander 9 2018 Some remarks on fuzzy \(k\)-pseudometric spaces. Zbl 1499.54065 Šostak, Alexander 3 2018 George-Veeramani fuzzy metrics revised. Zbl 1432.03112 Šostak, Alexander 1 2018 Bornological structures on many-valued sets. Zbl 1390.54009 Šostak, Alexander; Uļjane, Ingrīda 3 2017 \(L^M\)-valued equalities, \(L^M\)-rough approximation operators and \(ML\)-graded ditopologies. Zbl 1372.54011 Šostak, Alexander; Eļkins, Aleksandrs 3 2017 Fuzzifying topology induced by a strong fuzzy metric. Zbl 1378.54012 Miñana, Juan-José; Šostak, Alexander 8 2016 M-valued measure of roughness for approximation of \(L\)-fuzzy sets and its topological interpretation. Zbl 1462.03022 Han, Sang-Eon; Šostak, Alexander 6 2016 \(L\)-valued bornologies on powersets. Zbl 1374.46056 Šostak, Alexander; Uļjane, Ingrīda 5 2016 On a category of extensional fuzzy rough approximation \(L\)-valued spaces. Zbl 1455.03069 Eļkins, Aleksandrs; Šostak, Alexander; Uļjane, Ingrīda 5 2016 A construction of a fuzzy topology from a strong fuzzy metric. Zbl 1353.54009 Grecova, Svetlana; Šostak, Alexander; Uljane, Ingrīda 2 2016 Soft ditopological spaces. Zbl 1461.54012 Dizman, Tugbahan Simsekler; Šostak, Alexander; Yuksel, Saziye 2 2016 Categories of fuzzy topology in the context of graded ditopologies on textures. Zbl 1419.54007 Šostak, Alexander; Brown, Lawrence M. 14 2014 On approximate-type systems generated by \( L\)-relations. Zbl 1461.03052 Han, Sang-Eon; Kim, In Soo; Šostak, Alexander 8 2014 An approach to the concept of soft fuzzy proximity. Zbl 1474.54036 Çetkin, Vildan; Šostak, Alexander P.; Aygün, Halis 2 2014 Variable-range approximate systems induced by many-valued \(L\)-relations. Zbl 1432.03107 Eļkins, Aleksandrs; Han, Sang-Eon; Šostak, Alexander 2 2014 A compression of digital images derived from a Khalimsky topological structure. Zbl 1300.54012 Han, Sang-Eon; Šostak, A. 21 2013 \(L\)-fuzzy syntopogenous structures. I: Fundamentals and application to \(L\)-fuzzy topologies, \(L\)-fuzzy proximities and \(L\)-fuzzy uniformities. Zbl 1314.54004 Čimoka, Dace; Šostak, Alexander 5 2013 A new approach to soft topology. Zbl 1276.54007 Varol, Banu Pazar; Shostak, Alexander; Aygün, Halis 11 2012 Towards the theory of approximate systems: variable range categories. Zbl 1301.03044 Šostak, Alexander 4 2012 Towards the theory of \(L\)-bornological spaces. Zbl 1253.46077 Abel, M.; Šostak, A. 9 2011 Categories related to topology viewed as soft sets. Zbl 1254.54013 Varol, Banu Pazar; Shostak, Alexander; Aygün, Halis 4 2011 Towards the theory of \(\mathbb M\)-approximate systems: Fundamentals and examples. Zbl 1222.54008 Šostak, Alexander 12 2010 Ideal-valued topological structures. Zbl 1210.54012 Gutiérrez García, Javier; Kubiak, T.; Šostak, A. P. 1 2010 A fuzzification of the category of \(M\)-valued \(L\)-topological spaces. Zbl 1069.54007 Kubiak, Tomasz; Šostak, Alexander P. 12 2004 \(L\)-valued categories generalities and examples related to algebra and topology. Zbl 1068.18001 Šostak, Alexander P. 3 2004 A unified approach to the concept of fuzzy \(L\)-uniform space. Zbl 1061.54006 Gutiérrez García, J.; de Prada Vicente, M. A.; Šostak, A. P. 31 2003 On some fuzzy categories related to category \(L\)-TOP of \(L\)-topological spaces. Zbl 1052.54005 Šostak, A. P. 2 2003 Fuzzy functions and an extension of the category \(L\)-Top of Chang-Goguen \(L\)-topological spaces. Zbl 1019.54006 Šostak, Alexander P. 1 2002 Restricted compactness properties and their preservation under products. Zbl 0962.54020 Steprāns, Juris; Šostak, Alexander P. 3 2000 Fuzzy functions: A fuzzy extension of the category SET and some related categories. Zbl 0977.03028 Höhle, Ulrich; Porst, Hans-E.; Šostak, Alexander P. 1 2000 Axiomatic foundations of fixed-basis fuzzy topology. Zbl 0977.54006 Höhle, U.; Šostak, A. P. 244 1999 Fuzzy categories related to algebra and topology. Zbl 0947.18001 Šostak, Alexander 8 1999 Extremal problems of approximation theory in fuzzy contact. Zbl 0956.41012 Asmuss, Svetlana V.; Šostak, Alexander P. 1 1999 Lower set-valued fuzzy topologies. Zbl 0890.54005 Kubiak, T.; Šostak, A. 34 1997 Even fuzzy topologies and related structures. Zbl 0896.54003 Gutiérrez García, Javier; De Prada Vicente, M. A.; Šostak, A. 4 1997 Fuzzy syntopogeneous structures. Zbl 0890.54002 Šostak, Alexander P. 3 1997 Extremal problems of approximation theory of fuzzy sets. Zbl 1126.41305 Asmuss, Svetlana V.; Šostak, Alexander P. 2 1997 Basic structures of fuzzy topology. Zbl 0857.54003 Šostak, A. P. 41 1996 A general theory of fuzzy topological spaces. Zbl 0948.54003 Höhle, Ulrich; Šostak, Alexander 44 1995 Editorial to the “Special issue on fuzzy topology”. Zbl 0867.54003 Höhle, U.; Rodabaugh, S. E.; Šostak, A. 7 1995 On inductive dimensions for fuzzy topological spaces. Zbl 0867.54004 Adnadjević, D.; Šostak, A. P. 2 1995 Mathematics. (Matemātika.) Zbl 0834.00012 7 1994 Fuzzification of the theory of continuous functions. Zbl 0828.26015 Burgin, Mark; Šostak, Alexandr 7 1994 A theorem on decomposition into compact-scattered subspaces and cardinality of topological spaces. Zbl 0806.54003 Bregman, Yu. H.; Shapirovskij, B. E.; Šostak, A. P. 2 1994 On clp-compact and countably clp-compact spaces. Zbl 0917.54030 Sondore, A.; Šostak, A. 1 1994 On decomposition of a space into certain subsets and \({\text cl}\)- cardinality of a topological space. Zbl 0806.54002 Bregman, Yu. H.; Shapirovskij, B. E.; Šostak, A. P. 1 1994 On a fuzzy uniform structure. Zbl 0809.54008 Dzhajanbajev, D.; Šostak, A. P. 6 1992 Another approach to the concept of a fuzzy proximity. Zbl 0789.54004 Markin, Sergej A.; Šostak, Alexander P. 6 1992 On endomorphism semigroups of a fuzzily structured set. Zbl 0861.54004 Shteinbuk, Veniamin; Šostak, Alexander 2 1992 On stratifiable fuzzy topological spaces. Zbl 0786.54007 Šostak, Alexander P. 1 1992 On semigroups of continuous transformations of fuzzily structured sets. Zbl 0761.54006 Shteinbuk, V. B.; Šostak, A. P. 4 1991 On the neighbourhood structure of fuzzy topological spaces. Zbl 0713.54008 Šostak, A. P. 16 1990 On cardinal functions of fuzzy sets in fuzzy topological spaces. I. Zbl 0718.54016 Šostak, A. P. 2 1990 On completeness and precompactness spectra of fuzzy sets in fuzzy uniform spaces. Zbl 0697.54005 Shostak, Aleksander; Dzhayanbaev, D. 2 1990 On zero-dimensionality in fuzzy topology. Zbl 0724.54010 Pujate, L.; Šostak, A. 1 1990 Two decades of fuzzy topology: Basic ideas, notions, and results. Zbl 0716.54004 Shostak, A. P. 69 1989 On some modifications of fuzzy topology. Zbl 0705.54007 Shostak, A. P. 8 1989 On the concept of E-regularity for fuzzy topology. Zbl 0714.54004 Šostak, A. 3 1989 Fuzzy cardinals and cardinalities of fuzzy sets. Zbl 0800.04006 Šostak, A. 2 1989 On compactness and connectedness degrees of fuzzy sets in fuzzy topological spaces. Zbl 0638.54008 Shostak, A. P. 18 1988 On a category for fuzzy topology. Zbl 0685.54006 Šostak, A. P. 7 1988 Connectedness degree of fuzzy sets in fuzzy topological spaces. Zbl 0725.54008 Shostak, A. P. 1 1988 The compactness degree of fuzzy subsets in fuzzy topological spaces. Zbl 0668.54005 Shostak, A. P. 1 1988 On a fuzzy topological structure. Zbl 0638.54007 Šostak, A. P. 160 1985 A fuzzy modification of the category of linearly ordered spaces. Zbl 0594.54003 Shostak, A. 6 1985 A fuzzy modification of a linearly ordered space. Zbl 0605.54007 Shostak, A. P. 3 1985 On partition of topological spaces. Zbl 0539.54005 Bregman, Yu. K.; Shapirovskij, B. Eh.; Shostak, A. P. 7 1984 On the stratification test of metrizability of topological spaces. Zbl 0562.54040 Shostak, A. P. 1 1983 Some remarks on Borsuk’s fundamental metric. Zbl 0455.54029 Čerin, Z. T.; Šostak, A. P. 5 1980 Some criteria of the final compactness of strongly paracompact spaces. Zbl 0439.54017 Shostak, A. P. 1 1979 On a class of topological spaces containing all bicompact and all connected spaces. Zbl 0369.54006 Sostak, A. 4 1977 Shapes in classes of compactness: retracts, extensors, movability. Zbl 0416.54010 Shostak, A. P. 2 1975 E-compact extensions of topological spaces. Zbl 0301.54027 Shostak, A. P. 73 1974 Shape equivalence in compactness classes. Zbl 0292.54051 Sostak, A. P. 1 1974 all cited Publications top 5 cited Publications all top 5 Cited by 460 Authors 33 Šostak, Alexander P. 26 Han, Sang-Eon 24 Shi, Fu-Gui 23 Fang, Jinming 21 Jäger, Gunther 19 Demirci, Mustafa 19 Pang, Bin 18 Abbas, Salah El-Deen 18 Solovyov, Sergey A. 16 Zhang, Dexue 15 Ghareeb, A. 15 Gutiérrez García, Javier 14 Yao, Wei 14 Yue, Yueli 12 Kim, Yong Chan 11 Li, Lingqiang 11 Rodabaugh, Stephen Ernest 10 Aygün, Halis 10 Yan, Conghua 9 de Prada Vicente, María Angeles 9 Uļjane, Ingrǐda 8 El-Saady, Kamal 8 Höhle, Ulrich 8 Jin, Qiu 8 Kubiak, Tomasz 8 Ramadan, Ahmed Abd El-Kader 8 Sayed, Osama Rashed 7 Ahsanullah, T. M. G. 7 Veselov, Alexander Petrovich 6 Ekmekçi, Ramazan 5 Abd El-Latif, Ahmed Aref 5 Al-Thukair, Fawzi A. 5 Krichever, Igor’ Moiseevich 5 Lai, Hongliang 5 Li, Qingguo 5 Mardones-Pérez, Iraide 5 Šešelja, Branimir 5 Tepavčević, Andreja 5 Tiwari, S. P. 5 Zahran, Ahmed M. 4 Al-Mufarrij, Jawaher 4 Asmuss, Svetlana V. 4 Burgin, Mark 4 Çetkin, Vildan 4 Denniston, Jeffrey T. 4 Enolskiĭ, Viktor Zelikovich 4 Hu, Baoqing 4 Ko, Jung Mi 4 Luo, Maokang 4 Melton, Austin C. jun. 4 Novikov, Sergeĭ Petrovich 4 Paseka, Jan 4 Richardson, Gary D. 4 Vadivel, Appachi 4 Xiu, Zhenyu 4 Zhang, Gao 4 Zhong, Yu 3 Abd-Allah, Mohammed Azab 3 Acharjee, Santanu 3 Alimohammady, Mohsen 3 Aygünoğlu, Abdülkadir 3 Bogoyavlenskij, Oleg Igorevich 3 Burton, M. H. 3 Chen, Piwei 3 Dickey, Leonid A. 3 Dubrovin, Boris Anatol’evich 3 El-Sanousy, El-Sayed 3 Elavarasan, Elangovan 3 Eļkins, Aleksandrs 3 Ertürk, Rıza 3 Gel’fand, Israil’ Moiseevich 3 Hu, Kai 3 Ibedou, Ismail 3 Jinming, Fang 3 Khalaf, Mohammed M. 3 Khalil, O. H. 3 Li, Hongyan 3 Li, Shenggang 3 Liu, Yingming 3 Pal, Priyanka 3 Prykarpatsky, Anatoliy Karolevych 3 Qiao, Junsheng 3 Romaguera Bonilla, Salvador 3 Roohi, Mehdi 3 Russo, Ciro 3 Samanta, Syamal Kumar 3 Šlapal, Josef 3 Stehlík, Milan 3 Wu, Xiuyun 3 Yang, Xiaofei 3 Zhang, Lin 3 Zhao, Hu 2 Abolpour, Khadijeh 2 Altintas, Ismet 2 Atef, Asmaa 2 Aydoğdu, Ebru 2 Bai, Shizhong 2 Bayhan, Sadik 2 Bayoumi, Fatma 2 Belokolos, Eugene D. ...and 360 more Authors all top 5 Cited in 104 Serials 222 Fuzzy Sets and Systems 25 Functional Analysis and its Applications 21 Topology and its Applications 19 Filomat 17 Information Sciences 17 Iranian Journal of Fuzzy Systems 13 Journal of the Egyptian Mathematical Society 13 Journal of Intelligent and Fuzzy Systems 12 Soft Computing 11 Journal of Soviet Mathematics 10 Quaestiones Mathematicae 9 Chaos, Solitons and Fractals 8 Theoretical and Mathematical Physics 8 International Journal of Approximate Reasoning 8 Computational and Applied Mathematics 7 New Mathematics and Natural Computation 6 Journal of Mathematical Analysis and Applications 6 International Journal of Mathematics and Mathematical Sciences 6 Acta Applicandae Mathematicae 5 Computers & Mathematics with Applications 5 Journal of Mathematical Physics 5 Kybernetika 5 Advances in Fuzzy Systems 5 Sahand Communications in Mathematical Analysis 4 Communications in Mathematical Physics 4 Journal of Mathematical Sciences (New York) 4 Abstract and Applied Analysis 3 Demonstratio Mathematica 3 Applied General Topology 3 Journal of Mathematics 3 Journal of Ramanujan Society of Mathematics and Mathematical Sciences 2 Mathematical Methods in the Applied Sciences 2 Mathematical Notes 2 Ukrainian Mathematical Journal 2 Applied Mathematics and Computation 2 Inventiones Mathematicae 2 Applied Mathematics Letters 2 Mathematical and Computer Modelling 2 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 2 Archive for Mathematical Logic 2 Turkish Journal of Mathematics 2 Honam Mathematical Journal 2 Mathematica Moravica 2 Journal of Applied Mathematics and Computing 2 Hacettepe Journal of Mathematics and Statistics 2 Proyecciones 2 Applications and Applied Mathematics 2 Journal of Nonlinear Science and Applications 2 TWMS Journal of Pure and Applied Mathematics 2 Fuzzy Information and Engineering 2 Open Mathematics 1 Communications on Pure and Applied Mathematics 1 Discrete Applied Mathematics 1 International Journal of General Systems 1 Letters in Mathematical Physics 1 Mathematical Proceedings of the Cambridge Philosophical Society 1 Compositio Mathematica 1 Czechoslovak Mathematical Journal 1 Journal of Combinatorial Theory. Series A 1 Journal of Computer and System Sciences 1 Jnanabha 1 Matematički Vesnik 1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 1 Proceedings of the American Mathematical Society 1 Results in Mathematics 1 Semigroup Forum 1 Studia Logica 1 Ergodic Theory and Dynamical Systems 1 Acta Mathematicae Applicatae Sinica 1 Annals of Pure and Applied Logic 1 Order 1 Journal of Automated Reasoning 1 Mathematical Structures in Computer Science 1 Acta Mathematica Sinica. New Series 1 Journal of Dynamics and Differential Equations 1 Applied Mathematics. Series B (English Edition) 1 Mathematical Logic Quarterly (MLQ) 1 Annals of Mathematics and Artificial Intelligence 1 Communications de la Faculté des Sciences de l’Université d’Ankara. Séries A1. Mathematics and Statistics 1 Acta Mathematica Sinica. English Series 1 International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 1 Differential Equations 1 Bulletin of the Brazilian Mathematical Society. New Series 1 South East Asian Journal of Mathematics and Mathematical Sciences 1 Thai Journal of Mathematics 1 Boletim da Sociedade Paranaense de Matemática. Terceira Série 1 Proceedings of the Steklov Institute of Mathematics 1 Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences 1 Analele Universității de Vest din Timișoara. Seria Matematică-Informatică 1 Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica 1 Journal of Applied Mathematics & Informatics 1 Journal of Mathematical Extension 1 Arabian Journal of Mathematics 1 Journal of Mahani Mathematical Research Center 1 Palestine Journal of Mathematics 1 Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp’yuternye Nauki 1 Journal of Linear and Topological Algebra 1 Journal of Function Spaces 1 International Journal of Applied and Computational Mathematics 1 Cogent Mathematics ...and 4 more Serials all top 5 Cited in 42 Fields 425 General topology (54-XX) 97 Mathematical logic and foundations (03-XX) 86 Order, lattices, ordered algebraic structures (06-XX) 72 Category theory; homological algebra (18-XX) 53 Computer science (68-XX) 48 Partial differential equations (35-XX) 24 Dynamical systems and ergodic theory (37-XX) 22 Functional analysis (46-XX) 17 Ordinary differential equations (34-XX) 15 Operator theory (47-XX) 14 Group theory and generalizations (20-XX) 14 Algebraic topology (55-XX) 12 Convex and discrete geometry (52-XX) 11 Real functions (26-XX) 10 Quantum theory (81-XX) 9 Topological groups, Lie groups (22-XX) 8 Algebraic geometry (14-XX) 7 General algebraic systems (08-XX) 7 Mechanics of particles and systems (70-XX) 6 Combinatorics (05-XX) 5 Special functions (33-XX) 4 Nonassociative rings and algebras (17-XX) 4 Measure and integration (28-XX) 4 Global analysis, analysis on manifolds (58-XX) 4 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 3 History and biography (01-XX) 3 Associative rings and algebras (16-XX) 3 Information and communication theory, circuits (94-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Functions of a complex variable (30-XX) 2 Approximations and expansions (41-XX) 2 Differential geometry (53-XX) 2 Numerical analysis (65-XX) 2 Fluid mechanics (76-XX) 1 Field theory and polynomials (12-XX) 1 Commutative algebra (13-XX) 1 Potential theory (31-XX) 1 Integral equations (45-XX) 1 Manifolds and cell complexes (57-XX) 1 Probability theory and stochastic processes (60-XX) 1 Relativity and gravitational theory (83-XX) 1 Systems theory; control (93-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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