Edit Profile (opens in new tab) Kawahara, Yasuo Co-Author Distance Author ID: kawahara.yasuo Published as: Kawahara, Yasuo Documents Indexed: 67 Publications since 1972 Co-Authors: 22 Co-Authors with 48 Joint Publications 201 Co-Co-Authors all top 5 Co-Authors 18 single-authored 13 Furusawa, Hitoshi 8 Mizoguchi, Yoshihiro 7 Inokuchi, Shuichi 5 Honda, Kazumasa 5 Ishida, Toshikazu 5 Lee, Hyen Yeal 5 Mori, Masao 4 Tsumagari, Norihiro 4 Winter, Michael 3 Okuma, Hitomi 2 Ohtsuka, Hiroshi 2 Struth, Georg 2 Yamaguchi, Meiri 1 Chaudhry, Muhammad Anwar 1 Farge, Marie 1 Kudo, Tatsuji 1 Kumamoto, Satoru 1 MacCaull, Wendy 1 Minami, Toshiro 1 Nohmi, Masaya 1 Okamoto, Naoya 1 Sato, Tatsuro 1 Schneider, Kai 1 Shoudai, Takayoshi 1 Tanaka, Kakuji 1 Yoshimatsu, Katsunori all top 5 Serials 17 Bulletin of Informatics and Cybernetics 9 Memoirs of the Faculty of Science. Series A. Mathematics 7 RIMS Kokyuroku 3 Bulletin of the Kyushu Institute of Technology. Mathematics, Natural Science 3 Theoretical Computer Science 3 Journal of Logical and Algebraic Methods in Programming 2 Journal of Mathematical Physics 2 Fuzzy Sets and Systems 1 Communications in Algebra 1 Geophysical and Astrophysical Fluid Dynamics 1 Information Sciences 1 The Journal of Logic and Algebraic Programming 1 Journal of Cellular Automata all top 5 Fields 39 Category theory; homological algebra (18-XX) 38 Computer science (68-XX) 17 Mathematical logic and foundations (03-XX) 6 Order, lattices, ordered algebraic structures (06-XX) 5 General topology (54-XX) 3 General algebraic systems (08-XX) 2 Combinatorics (05-XX) 2 Dynamical systems and ergodic theory (37-XX) 2 Quantum theory (81-XX) 2 Statistical mechanics, structure of matter (82-XX) 1 Group theory and generalizations (20-XX) 1 Manifolds and cell complexes (57-XX) 1 Fluid mechanics (76-XX) 1 Operations research, mathematical programming (90-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 32 Publications have been cited 124 times in 84 Documents Cited by ▼ Year ▼ On the cardinality of relations. Zbl 1134.03318 Kawahara, Yasuo 13 2006 An algebraic formalization of fuzzy relations. Zbl 0934.03068 Kawahara, Yasuo; Furusawa, Hitoshi 12 1999 Pushout-complements and basic concepts of grammars in toposes. Zbl 0723.18004 Kawahara, Yasuo 12 1990 A small final coalgebra theorem. Zbl 0952.68101 Kawahara, Yasuo; Mori, Masao 11 2000 Crispness and representation theorem in Dedekind categories. Zbl 0933.18003 Kawahara, Yasuo; Furusawa, Hitoshi 10 1997 Categorical representation theorems of fuzzy relations. Zbl 0943.03042 Kawahara, Yasuo; Furusawa, Hitoshi; Mori, Masao 8 1999 Notes on the universality of relational functors. Zbl 0274.18004 Kawahara, Yasuo 6 1973 Dedekind categories with cutoff operators. Zbl 1230.18003 Furusawa, Hitoshi; Kawahara, Yasuo; Winter, Michael 5 2011 Relations in categories with pullbacks. Zbl 0261.18005 Kawahara, Yasuo 5 1973 Crispness in Dedekind categories. Zbl 1270.18008 Kawahara, Yasuo; Furusawa, Hitoshi 5 2001 Relational structures and their partial morphisms in view of single pushout rewriting. Zbl 1494.68113 Kawahara, Yasuo; Mizoguchi, Yoshihiro 4 1994 Formal concepts in Dedekind categories. Zbl 1140.68065 Ishida, Toshikazu; Honda, Kazumasa; Kawahara, Yasuo 3 2008 Point axioms in Dedekind categories. Zbl 1271.18003 Furusawa, Hitoshi; Kawahara, Yasuo 3 2012 Continuous relations and Richardson’s theorem. Zbl 1364.68270 Furusawa, Hitoshi; Ishida, Toshikazu; Kawahara, Yasuo 3 2012 A symbolic calculus of regular expressions. Zbl 0641.68079 Mizoguchi, Yoshihiro; Ohtsuka, Hiroshi; Kawahara, Yasuo 2 1987 Period lengths of cellular automata on square lattices with rule 90. Zbl 0939.68720 Kawahara, Yasuo; Kumamoto, Satoru; Mizoguchi, Yoshihiro; Nohmi, Masaya; Ohtsuka, Hiroshi; Shoudai, Takayoshi 2 1995 Manifolds in categories. Zbl 0251.18014 Kawahara, Yasuo 2 1972 Relational graph rewritings. Zbl 0873.68101 Mizoguchi, Yoshihiro; Kawahara, Yasuo 2 1995 Relational formalisations of compositions and liftings of multirelations. Zbl 1471.68124 Furusawa, Hitoshi; Kawahara, Yasuo; Struth, Georg; Tsumagari, Norihiro 2 2015 Urysohn’s lemma in Schröder categories. Zbl 1270.18006 Kawahara, Yasuo 2 2007 Applications of relational calculus to computer mathematics. Zbl 0645.68086 Kawahara, Yasuo 1 1988 Fuzzy graph rewritings. Zbl 0939.68676 Mori, Masao; Kawahara, Yasuo 1 1995 Trees and terms in relational graph rewriting system. Zbl 0939.68685 Mizoguchi, Yoshihiro; Kawahara, Yasuo 1 1995 Lattices in Dedekind categories. Zbl 0996.18001 Kawahara, Yasuo 1 2001 Relational aspects of relational database dependencies. Zbl 1058.68049 Okuma, Hitomi; Kawahara, Yasuo 1 2000 Matrix calculus in I-categories and an axiomatic characterization of relations in a regular category. Zbl 0274.18003 Kawahara, Yasuo 1 1973 On dynamical behaviors of cellular automata ca-60. Zbl 0760.68055 Lee, Hyen Yeal; Kawahara, Yasuo 1 1992 Kleisli, Parikh and Peleg compositions and liftings for multirelations. Zbl 1371.68171 Furusawa, Hitoshi; Kawahara, Yasuo; Struth, Georg; Tsumagari, Norihiro 1 2017 Groups in allegories. Zbl 1029.18006 Kawahara, Yasuo 1 2002 Informational representability for contexts in Dedekind categories. Zbl 1270.68104 Okuma, Hitomi; MacCaull, Wendy; Kawahara, Yasuo 1 2002 Cardinality functions in allegories. Zbl 1207.18004 Kawahara, Yasuo; Winter, Michael 1 2010 Relational set theory. Zbl 1502.03017 Kawahara, Yasuo 1 1995 Kleisli, Parikh and Peleg compositions and liftings for multirelations. Zbl 1371.68171 Furusawa, Hitoshi; Kawahara, Yasuo; Struth, Georg; Tsumagari, Norihiro 1 2017 Relational formalisations of compositions and liftings of multirelations. Zbl 1471.68124 Furusawa, Hitoshi; Kawahara, Yasuo; Struth, Georg; Tsumagari, Norihiro 2 2015 Point axioms in Dedekind categories. Zbl 1271.18003 Furusawa, Hitoshi; Kawahara, Yasuo 3 2012 Continuous relations and Richardson’s theorem. Zbl 1364.68270 Furusawa, Hitoshi; Ishida, Toshikazu; Kawahara, Yasuo 3 2012 Dedekind categories with cutoff operators. Zbl 1230.18003 Furusawa, Hitoshi; Kawahara, Yasuo; Winter, Michael 5 2011 Cardinality functions in allegories. Zbl 1207.18004 Kawahara, Yasuo; Winter, Michael 1 2010 Formal concepts in Dedekind categories. Zbl 1140.68065 Ishida, Toshikazu; Honda, Kazumasa; Kawahara, Yasuo 3 2008 Urysohn’s lemma in Schröder categories. Zbl 1270.18006 Kawahara, Yasuo 2 2007 On the cardinality of relations. Zbl 1134.03318 Kawahara, Yasuo 13 2006 Groups in allegories. Zbl 1029.18006 Kawahara, Yasuo 1 2002 Informational representability for contexts in Dedekind categories. Zbl 1270.68104 Okuma, Hitomi; MacCaull, Wendy; Kawahara, Yasuo 1 2002 Crispness in Dedekind categories. Zbl 1270.18008 Kawahara, Yasuo; Furusawa, Hitoshi 5 2001 Lattices in Dedekind categories. Zbl 0996.18001 Kawahara, Yasuo 1 2001 A small final coalgebra theorem. Zbl 0952.68101 Kawahara, Yasuo; Mori, Masao 11 2000 Relational aspects of relational database dependencies. Zbl 1058.68049 Okuma, Hitomi; Kawahara, Yasuo 1 2000 An algebraic formalization of fuzzy relations. Zbl 0934.03068 Kawahara, Yasuo; Furusawa, Hitoshi 12 1999 Categorical representation theorems of fuzzy relations. Zbl 0943.03042 Kawahara, Yasuo; Furusawa, Hitoshi; Mori, Masao 8 1999 Crispness and representation theorem in Dedekind categories. Zbl 0933.18003 Kawahara, Yasuo; Furusawa, Hitoshi 10 1997 Period lengths of cellular automata on square lattices with rule 90. Zbl 0939.68720 Kawahara, Yasuo; Kumamoto, Satoru; Mizoguchi, Yoshihiro; Nohmi, Masaya; Ohtsuka, Hiroshi; Shoudai, Takayoshi 2 1995 Relational graph rewritings. Zbl 0873.68101 Mizoguchi, Yoshihiro; Kawahara, Yasuo 2 1995 Fuzzy graph rewritings. Zbl 0939.68676 Mori, Masao; Kawahara, Yasuo 1 1995 Trees and terms in relational graph rewriting system. Zbl 0939.68685 Mizoguchi, Yoshihiro; Kawahara, Yasuo 1 1995 Relational set theory. Zbl 1502.03017 Kawahara, Yasuo 1 1995 Relational structures and their partial morphisms in view of single pushout rewriting. Zbl 1494.68113 Kawahara, Yasuo; Mizoguchi, Yoshihiro 4 1994 On dynamical behaviors of cellular automata ca-60. Zbl 0760.68055 Lee, Hyen Yeal; Kawahara, Yasuo 1 1992 Pushout-complements and basic concepts of grammars in toposes. Zbl 0723.18004 Kawahara, Yasuo 12 1990 Applications of relational calculus to computer mathematics. Zbl 0645.68086 Kawahara, Yasuo 1 1988 A symbolic calculus of regular expressions. Zbl 0641.68079 Mizoguchi, Yoshihiro; Ohtsuka, Hiroshi; Kawahara, Yasuo 2 1987 Notes on the universality of relational functors. Zbl 0274.18004 Kawahara, Yasuo 6 1973 Relations in categories with pullbacks. Zbl 0261.18005 Kawahara, Yasuo 5 1973 Matrix calculus in I-categories and an axiomatic characterization of relations in a regular category. Zbl 0274.18003 Kawahara, Yasuo 1 1973 Manifolds in categories. Zbl 0251.18014 Kawahara, Yasuo 2 1972 all cited Publications top 5 cited Publications all top 5 Cited by 85 Authors 15 Kawahara, Yasuo 11 Winter, Michael 8 Furusawa, Hitoshi 6 Berghammer, Rudolf 6 Guttmann, Walter 5 Kahl, Wolfram 5 Stucke, Insa 4 Höfner, Peter 4 Mizoguchi, Yoshihiro 4 Oliveira, José Nuno 3 Adámek, Jiří 2 di Lena, Pietro 2 Glück, Roland 2 Goldblatt, Robert Ian 2 Grabowski, Adam 2 Mitsuishi, Takashi 2 Möller, Bernhard 2 Porst, Hans-Eberhard 2 Rosselló, Francesc 2 Sichler, Jiří Jan 2 Trnková, Věra 1 Alcântara, Maigan S. da S. 1 Antimirov, Valentin M. 1 Barbosa, Luís Soares 1 Bello, Rafael 1 Braatz, Benjamin 1 Brunet, Paul 1 Burmeister, Peter 1 Caballero, Yailé 1 Coello, Lenniet 1 Conte, Giuseppe 1 Danilenko, Nikita 1 de B. Melo, Silvio 1 de Oliveira, Wilson Rosa 1 Desharnais, Jules 1 Dias, Thiago 1 Dow, R. A. 1 Ehrig, Hartmut 1 Endrullis, Jörg 1 Fernandez, Yumilka 1 Filiberto, Yaima 1 Flocchini, Paola 1 Frias, Mabel 1 Friggens, David 1 Geurts, Frédéric 1 Golas, Ulrike 1 Gomes, Leandro G. 1 Grinenko, Anastasiya 1 Gritzner, Thomas F. 1 Honda, Kazumasa 1 Ishida, Toshikazu 1 Jackson, Ethan K. 1 Jugnia, Celestin Nkuimi 1 Kianpi, Maurice 1 Koubek, Vaclav 1 Lee, Hyen Yeal 1 Llabrés, Mercè 1 Lohre, Eckhard 1 Lowe, Michael J. S. 1 Madeira, Alexandre 1 Margara, Luciano 1 McIver, Annabelle K. 1 Milius, Stefan 1 Mingarelli, Angelo Bernado 1 Moreira, Nelma 1 Mori, Masao 1 Overbeek, Roy 1 Pan, Xiaodong 1 Pous, Damien 1 Reis, Rogério 1 Rosset, Aloïs 1 Rutten, Jan J. M. M. 1 Santoro, Nicola 1 Shul’geifer, E. G. 1 Soboll, Thomas 1 Sousa, Lurdes 1 Struth, Georg 1 Tews, Hendrik 1 Torrens, Joan 1 Tsalenko, M. Sh. 1 Tsumagari, Norihiro 1 Valiente, Gabriel 1 von Oheimb, David 1 Wißmann, Thorsten 1 Xu, Yang all top 5 Cited in 22 Serials 12 Journal of Logical and Algebraic Methods in Programming 10 Theoretical Computer Science 7 Fuzzy Sets and Systems 5 Information Sciences 3 Cahiers de Topologie et Géométrie Différentielle Catégoriques 3 The Journal of Logic and Algebraic Programming 2 Physica D 2 Applied Categorical Structures 2 Soft Computing 1 Discrete Mathematics 1 Journal of Mathematical Physics 1 Algebra Universalis 1 International Journal of Mathematics and Mathematical Sciences 1 Journal of Soviet Mathematics 1 Annals of Pure and Applied Logic 1 Journal of Symbolic Computation 1 Information and Computation 1 Formal Aspects of Computing 1 International Journal of Foundations of Computer Science 1 Theory and Applications of Categories 1 Revista Investigación Operacional 1 RAIRO. Theoretical Informatics and Applications all top 5 Cited in 12 Fields 55 Computer science (68-XX) 41 Category theory; homological algebra (18-XX) 36 Mathematical logic and foundations (03-XX) 7 Combinatorics (05-XX) 5 General algebraic systems (08-XX) 4 Order, lattices, ordered algebraic structures (06-XX) 3 Dynamical systems and ergodic theory (37-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Operations research, mathematical programming (90-XX) 1 Associative rings and algebras (16-XX) 1 General topology (54-XX) 1 Statistical mechanics, structure of matter (82-XX) Citations by Year