Edit Profile (opens in new tab) Komatsu, Hikosaburo (b. 1935 d. 2022) Co-Author Distance Author ID: komatsu.hikosaburo Published as: Komatsu, Hikosaburo; Komatsu, H.; Komatsu, Hikosaburō more...less External Links: MGP · Wikidata · GND · IdRef Documents Indexed: 73 Publications since 1960, including 2 Books 8 Contributions as Editor · 1 Further Contribution Co-Authors: 6 Co-Authors with 6 Joint Publications 167 Co-Co-Authors all top 5 Co-Authors 76 single-authored 2 Kawai, Takahiro 1 Aoki, Takashi 1 Fujimoto, Yoshihisa 1 Goto, Takefumi 1 Ishii, Tadashi 1 Kataoka, Kiyoomi 1 Knobloch, Eberhard 1 Liu, Dun 1 Morimoto, Mitsuo 1 Mulase, Motohiko 1 Noumi, Masatoshi 1 Ogawa, Tsukane 1 Oshima, Toshio 1 Uchikoshi, Keisuke 1 Yano, Tamaki all top 5 Serials 12 Journal of the Faculty of Science. Section I A 4 RIMS Kokyuroku 4 Proceedings of the Japan Academy 3 Journal of the Mathematical Society of Japan 2 Pacific Journal of Mathematics 2 Proceedings of the Japan Academy. Series A 2 Publications of the Research Institute for Mathematical Sciences, Kyoto University 2 Lecture Notes in Mathematics 2 Journal of the Faculty of Science. Section I 2 RIMS Kokyuroku 1 Hokkaido Mathematical Journal 1 Journal of Differential Equations 1 Journal of Mathematics of Kyoto University 1 Mathematische Annalen 1 Tôhoku Mathematical Journal. Second Series 1 Southeast Asian Bulletin of Mathematics 1 Advances in Mathematics 1 Journal of Northwest University. Natural Sciences Edition 1 Journal de Mathématiques Pures et Appliquées. Neuvième Série 1 The Asian Journal of Mathematics 1 Sophia Kokyuroku in Mathematics 1 Springer Proceedings in Mathematics & Statistics 1 Iwanami Shoten Kiso Sūgaku all top 5 Fields 38 Functional analysis (46-XX) 31 Partial differential equations (35-XX) 10 Integral transforms, operational calculus (44-XX) 10 Operator theory (47-XX) 8 General and overarching topics; collections (00-XX) 8 History and biography (01-XX) 8 Several complex variables and analytic spaces (32-XX) 7 Ordinary differential equations (34-XX) 6 Global analysis, analysis on manifolds (58-XX) 2 Algebraic topology (55-XX) 2 Information and communication theory, circuits (94-XX) 1 Number theory (11-XX) 1 Commutative algebra (13-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Group theory and generalizations (20-XX) 1 Topological groups, Lie groups (22-XX) 1 Real functions (26-XX) 1 Functions of a complex variable (30-XX) 1 Approximations and expansions (41-XX) 1 Abstract harmonic analysis (43-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 49 Publications have been cited 1,112 times in 799 Documents Cited by ▼ Year ▼ Ultradistributions. I: Structure theorems and a characterization. Zbl 0258.46039Komatsu, Hikosaburo 289 1973 Fractional powers of operators. Zbl 0154.16104Komatsu, H. 150 1966 Projective and injective limits of weakly compact sequences of locally convex spaces. Zbl 0168.10603Komatsu, H. 81 1967 Ultradistributions. II: The kernel theorem and ultradistributions with support in a submanifold. Zbl 0385.46027Komatsu, Hikosaburo 69 1977 Ultradistributions. III: Vector valued ultradistributions and the theory of kernels. Zbl 0507.46035Komatsu, Hikosaburo 57 1982 Fractional powers of operators. II: Interpolation spaces. Zbl 0168.10702Komatsu, H. 48 1967 Semi-groups of operators in locally convex spaces. Zbl 0154.16103Komatsu, H. 34 1964 Fractional powers of operators. III: Negative powers. IV: Potential operators. Zbl 0181.41003Komatsu, H. 32 1969 The implicit function theorem for ultradifferentiable mappings. Zbl 0467.26004Komatsu, Hikosaburo 30 1979 Boundary values of hyperfunction solutions of linear partial differential equations. Zbl 0225.35032Komatsu, Hikosaburo; Kawai, Takahiro 24 1971 A characterization of real analytic functions. Zbl 0144.35505Komatsu, Hikosaburo 23 1960 A local version of Bochner’s tube theorem. Zbl 0239.32012Komatsu, Hikosaburo 22 1972 Ultradifferentiability of solutions of ordinary differential equations. Zbl 0486.34004Komatsu, Hikosaburo 18 1980 Resolutions by hyperfunctions of sheaves of solutions of differential equations with constant coefficients. Zbl 0161.29802Komatsu, H. 17 1968 On the index of ordinary differential operators. Zbl 0232.34026Komatsu, Hikosaburo 17 1971 Relative cohomology of sheaves of solutions of differential equations. Zbl 0278.58010Komatsu, Hikosaburo 17 1973 Microlocal analysis in Gevrey classes and in complex domains. Zbl 0791.35003Komatsu, Hikosaburo 14 1991 Laplace transforms of hyperfunctions: A new foundation of the Heaviside calculus. Zbl 0644.44001Komatsu, Hikosaburo 13 1987 An analogue of the Cauchy-Kowlevsky theorem for ultradifferentiable functions and a division theorem of ultradistributions as its dual. Zbl 0424.46032Komatsu, Hikosaburo 13 1979 Fractional powers of operators. VI: Interpolation of non-negative operators and imbedding theorems. Zbl 0249.47013Komatsu, Hikosaburo 12 1972 Operational calculus and semi-groups of operators. Zbl 0798.46041Komatsu, Hikosaburo 12 1993 Abstract analyticity in time and unique continuation property of solutions of a parabolic equation. Zbl 0100.12101Komatsu, Hikosaburo 12 1961 Irregularity of characteristic elements and construction of nullsolutions. Zbl 0443.35009Komatsu, Hikosaburo 11 1976 A general interpolation theorem of Marcinkiewicz type. Zbl 0469.46052Komatsu, Hikosaburo 11 1981 A proof of Kotake and Narasimhan’s theorem. Zbl 0113.30501Komatsu, H. 9 1962 Fractional powers of operators. V: Dual operators. Zbl 0208.16302Komatsu, H. 8 1970 An introduction to the theory of hyperfunctions. Zbl 0258.46040Komatsu, Hikosaburo 7 1973 Solution of differential equations by means of Laplace hyperfunctions. Zbl 0894.35005Komatsu, Hikosaburo 7 1996 On the regularity of hyperfunction solutions of linear ordinary differential equations with real analytic coefficients. Zbl 0266.34006Komatsu, Hikosaburo 6 1973 Irregularity of characteristic elements and hyperbolicity. Zbl 0375.35044Komatsu, Hikosaburo 6 1977 Linear hyperbolic equations with Gevrey coefficients. Zbl 0407.35052Komatsu, Hikosaburo 6 1980 Boundary values for solutions of elliptic equations. Zbl 0199.16701Komatsu, Hikosaburo 5 1970 Ultradistributions, hyperfunctions and linear differential equations. Zbl 0282.46039Komatsu, Hikosaburo 5 1973 An ergodic theorem. Zbl 0157.21401Komatsu, H. 3 1968 Hyperfunctions and linear partial differential equations. Zbl 0263.35075Komatsu, Hikosaburo 3 1973 Seki, founder of modern mathematics in Japan. A commemoration on his tercentenary. Collected papers of the international conference on the history of mathematics in memory of Seki Takakazu, Tokyo, Japan, August 25–31, 2008. Zbl 1266.01005 2 2013 Cohomology of morphisms of sheafed spaces. Zbl 0231.55013Komatsu, Hikosaburo 2 1971 Functional analysis and related topics, 1991. Proceedings ot the international conference in memory of Professor Kôsaku Yosida held at RIMS, Kyoto University, Japan, July 29-Aug. 2, 1991. Zbl 0782.00076 2 1993 An elementary theory of hyperfunctions and microfunctions. Zbl 0828.35005Komatsu, Hikosaburo 2 1992 Multipliers for Laplace hyperfunctions – a justification of Heaviside’s rules. Zbl 0897.46024Komatsu, H. 2 1994 On interior regularities of the solutions of principally elliptic systems of linear partial differential equations. Zbl 0113.08801Komatsu, H. 2 1961 Laplace transforms of hyperfunctions: Another foundation of the Heaviside operational calculus. Zbl 0716.44005Komatsu, Hikosaburo 2 1988 On the index of systems of linear ordinary differential operators. Zbl 0443.47047Komatsu, Hikosaburo 1 1978 Linear ordinary differential equations with Gevrey coefficients. Zbl 0464.34011Komatsu, Hikosaburo 1 1982 Heaviside’s theory of signal transmission on submarine cables. Zbl 1207.46036Komatsu, Hikosaburo 1 2010 Prof. Yosida’s proof of the Plancherel and the Bochner theorems for locally compact abelian groups. Zbl 1016.43005Komatsu, Hikosaburo 1 2001 Hyperfunctions and pseudo-differential equations. Proceedings of a conference at Katata, 1971. Zbl 0253.00006 1 1973 Ultradistributions and hyperfunctions. Zbl 0264.46036Komatsu, Hikosaburo 1 1973 Operational calculus, hyperfunctions and ultradistributions. Zbl 0674.44006Komatsu, Hikosaburo 1 1989 Seki, founder of modern mathematics in Japan. A commemoration on his tercentenary. Collected papers of the international conference on the history of mathematics in memory of Seki Takakazu, Tokyo, Japan, August 25–31, 2008. Zbl 1266.01005 2 2013 Heaviside’s theory of signal transmission on submarine cables. Zbl 1207.46036Komatsu, Hikosaburo 1 2010 Prof. Yosida’s proof of the Plancherel and the Bochner theorems for locally compact abelian groups. Zbl 1016.43005Komatsu, Hikosaburo 1 2001 Solution of differential equations by means of Laplace hyperfunctions. Zbl 0894.35005Komatsu, Hikosaburo 7 1996 Multipliers for Laplace hyperfunctions – a justification of Heaviside’s rules. Zbl 0897.46024Komatsu, H. 2 1994 Operational calculus and semi-groups of operators. Zbl 0798.46041Komatsu, Hikosaburo 12 1993 Functional analysis and related topics, 1991. Proceedings ot the international conference in memory of Professor Kôsaku Yosida held at RIMS, Kyoto University, Japan, July 29-Aug. 2, 1991. Zbl 0782.00076 2 1993 An elementary theory of hyperfunctions and microfunctions. Zbl 0828.35005Komatsu, Hikosaburo 2 1992 Microlocal analysis in Gevrey classes and in complex domains. Zbl 0791.35003Komatsu, Hikosaburo 14 1991 Operational calculus, hyperfunctions and ultradistributions. Zbl 0674.44006Komatsu, Hikosaburo 1 1989 Laplace transforms of hyperfunctions: Another foundation of the Heaviside operational calculus. Zbl 0716.44005Komatsu, Hikosaburo 2 1988 Laplace transforms of hyperfunctions: A new foundation of the Heaviside calculus. Zbl 0644.44001Komatsu, Hikosaburo 13 1987 Ultradistributions. III: Vector valued ultradistributions and the theory of kernels. Zbl 0507.46035Komatsu, Hikosaburo 57 1982 Linear ordinary differential equations with Gevrey coefficients. Zbl 0464.34011Komatsu, Hikosaburo 1 1982 A general interpolation theorem of Marcinkiewicz type. Zbl 0469.46052Komatsu, Hikosaburo 11 1981 Ultradifferentiability of solutions of ordinary differential equations. Zbl 0486.34004Komatsu, Hikosaburo 18 1980 Linear hyperbolic equations with Gevrey coefficients. Zbl 0407.35052Komatsu, Hikosaburo 6 1980 The implicit function theorem for ultradifferentiable mappings. Zbl 0467.26004Komatsu, Hikosaburo 30 1979 An analogue of the Cauchy-Kowlevsky theorem for ultradifferentiable functions and a division theorem of ultradistributions as its dual. Zbl 0424.46032Komatsu, Hikosaburo 13 1979 On the index of systems of linear ordinary differential operators. Zbl 0443.47047Komatsu, Hikosaburo 1 1978 Ultradistributions. II: The kernel theorem and ultradistributions with support in a submanifold. Zbl 0385.46027Komatsu, Hikosaburo 69 1977 Irregularity of characteristic elements and hyperbolicity. Zbl 0375.35044Komatsu, Hikosaburo 6 1977 Irregularity of characteristic elements and construction of nullsolutions. Zbl 0443.35009Komatsu, Hikosaburo 11 1976 Ultradistributions. I: Structure theorems and a characterization. Zbl 0258.46039Komatsu, Hikosaburo 289 1973 Relative cohomology of sheaves of solutions of differential equations. Zbl 0278.58010Komatsu, Hikosaburo 17 1973 An introduction to the theory of hyperfunctions. Zbl 0258.46040Komatsu, Hikosaburo 7 1973 On the regularity of hyperfunction solutions of linear ordinary differential equations with real analytic coefficients. Zbl 0266.34006Komatsu, Hikosaburo 6 1973 Ultradistributions, hyperfunctions and linear differential equations. Zbl 0282.46039Komatsu, Hikosaburo 5 1973 Hyperfunctions and linear partial differential equations. Zbl 0263.35075Komatsu, Hikosaburo 3 1973 Hyperfunctions and pseudo-differential equations. Proceedings of a conference at Katata, 1971. Zbl 0253.00006 1 1973 Ultradistributions and hyperfunctions. Zbl 0264.46036Komatsu, Hikosaburo 1 1973 A local version of Bochner’s tube theorem. Zbl 0239.32012Komatsu, Hikosaburo 22 1972 Fractional powers of operators. VI: Interpolation of non-negative operators and imbedding theorems. Zbl 0249.47013Komatsu, Hikosaburo 12 1972 Boundary values of hyperfunction solutions of linear partial differential equations. Zbl 0225.35032Komatsu, Hikosaburo; Kawai, Takahiro 24 1971 On the index of ordinary differential operators. Zbl 0232.34026Komatsu, Hikosaburo 17 1971 Cohomology of morphisms of sheafed spaces. Zbl 0231.55013Komatsu, Hikosaburo 2 1971 Fractional powers of operators. V: Dual operators. Zbl 0208.16302Komatsu, H. 8 1970 Boundary values for solutions of elliptic equations. Zbl 0199.16701Komatsu, Hikosaburo 5 1970 Fractional powers of operators. III: Negative powers. IV: Potential operators. Zbl 0181.41003Komatsu, H. 32 1969 Resolutions by hyperfunctions of sheaves of solutions of differential equations with constant coefficients. Zbl 0161.29802Komatsu, H. 17 1968 An ergodic theorem. Zbl 0157.21401Komatsu, H. 3 1968 Projective and injective limits of weakly compact sequences of locally convex spaces. Zbl 0168.10603Komatsu, H. 81 1967 Fractional powers of operators. II: Interpolation spaces. Zbl 0168.10702Komatsu, H. 48 1967 Fractional powers of operators. Zbl 0154.16104Komatsu, H. 150 1966 Semi-groups of operators in locally convex spaces. Zbl 0154.16103Komatsu, H. 34 1964 A proof of Kotake and Narasimhan’s theorem. Zbl 0113.30501Komatsu, H. 9 1962 Abstract analyticity in time and unique continuation property of solutions of a parabolic equation. Zbl 0100.12101Komatsu, Hikosaburo 12 1961 On interior regularities of the solutions of principally elliptic systems of linear partial differential equations. Zbl 0113.08801Komatsu, H. 2 1961 A characterization of real analytic functions. Zbl 0144.35505Komatsu, Hikosaburo 23 1960 all cited Publications top 5 cited Publications all top 5 Cited by 662 Authors 49 Pilipović, Stevan 25 Schindl, Gerhard 24 Vindas, Jasson 22 Prangoski, Bojan 17 Debrouwere, Andreas 17 Kostić, Marko 17 Rainer, Armin 16 Sanz, Javier 15 Kawai, Takahiro 15 Langenbruch, Michael 13 Jiménez-Garrido, Javier 12 Teofanov, Nenad 11 Albanese, Angela Anna 10 Dlotko, Tomasz W. 10 Hoepfner, Gustavo 9 Boiti, Chiara 9 Chung, Soon-Yeong 9 Jornet, David 9 Komatsu, Hikosaburo 9 Solov’ev, Mikhaĭl Aleksandrovich 9 Velinov, Daniel 8 Kim, Dohan 7 Neyt, Lenny 7 Ōuchi, Sunao 7 Shakhmurov, Veli B. 7 Valdivia Ureña, Manuel 6 Cholewa, Jan W. 6 Domański, Paweł 6 Nenning, David Nicolas 6 Oshima, Toshio 6 Rodino, Luigi 6 Ruzhansky, Michael V. 6 Toft, Joachim 6 Zanghirati, Luisa 5 Araújo, Gabriel 5 Bonet Solves, José 5 Colombo, Fabrizio 5 Cordaro, Paulo D. 5 de Lessa Victor, Bruno 5 Dimovski, Pavel 5 Kaneko, Akira 5 Kania, Maria B. 5 Kashiwara, Masaki 5 Kriegl, Andreas 5 Li, Miao 5 Michor, Peter Wolfram 5 Nguyen Thieu Huy 5 Oliaro, Alessandro 5 Peloso, Marco Maria 5 Rodríguez-Bernal, Aníbal 5 Schmets, Jean 5 Struppa, Daniele Carlo 5 Thorel, Alexandre 5 Tomić, Filip 5 Vučković, Đorđe 4 Albrecht, Ernst 4 Aoki, Takashi 4 Cappiello, Marco 4 Cicognani, Massimo 4 Dasgupta, Aparajita 4 Dattori da Silva, Paulo L. 4 Droste, Bernd 4 Fernández, Carmen 4 Fürdös, Stefan 4 Galbis, Antonio 4 Gantner, Jonathan 4 Gramchev, Todor V. 4 Jakšić, Smiljana 4 Juan-Huguet, Jordi 4 Kruse, Karsten 4 Maksimović, Snjezana 4 Meise, Reinhold G. 4 Motos Izquierdo, Joaquin 4 Muramatu, Tosinobu 4 Musin, Il’dar Khamitovich 4 Nagamachi, Shigeaki 4 Petzsche, Hans-Joachim 4 Planells, María Jesús 4 Ragognette, Luis Fernando 4 Smirnov, Alexander G. 4 Stanković, Bogoljub 4 Sun, Chunyou 4 Tajima, Shinichi 4 Takeuchi, Kiyoshi 4 Tomilov, Yuri 4 Uchida, Motoo 4 Vogt, Dietmar 4 Vu Thi Ngoc Ha 4 Weis, Lutz W. 3 Adwan, Ziad 3 Atanackovic, Teodor M. 3 Besse, Nicolas 3 Blasco, Oscar 3 Bouzar, Chikh 3 Bruno, Tommaso 3 Chaili, Rachid 3 Chen, Chuang 3 Chung, Jaeyoung 3 Cioranescu, Ioana 3 D’Ovidio, Mirko ...and 562 more Authors all top 5 Cited in 192 Serials 63 Journal of Mathematical Analysis and Applications 43 Publications of the Research Institute for Mathematical Sciences, Kyoto University 29 Journal of Functional Analysis 23 Proceedings of the American Mathematical Society 22 Mathematische Annalen 22 Proceedings of the Japan Academy. Series A 22 Transactions of the American Mathematical Society 21 Proceedings of the Japan Academy 20 Journal of Differential Equations 17 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 16 Results in Mathematics 14 Annales de l’Institut Fourier 14 Manuscripta Mathematica 12 Annali di Matematica Pura ed Applicata. Serie Quarta 12 Journal of Pseudo-Differential Operators and Applications 11 Archiv der Mathematik 11 Mathematische Nachrichten 10 Integral Equations and Operator Theory 10 The Journal of Geometric Analysis 9 Arkiv för Matematik 9 Mathematische Zeitschrift 9 Rendiconti del Seminario Matematico della Università di Padova 9 Journal of Mathematical Sciences (New York) 8 Communications in Mathematical Physics 8 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie IV 7 Functiones et Approximatio. Commentarii Mathematici 7 Monatshefte für Mathematik 7 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 7 Semigroup Forum 7 Siberian Mathematical Journal 7 The Journal of Fourier Analysis and Applications 6 Theoretical and Mathematical Physics 6 Integral Transforms and Special Functions 6 Fractional Calculus & Applied Analysis 5 Archive for Rational Mechanics and Analysis 4 Applicable Analysis 4 Journal d’Analyse Mathématique 4 Advances in Mathematics 4 Bulletin de la Société Mathématique de France 4 Collectanea Mathematica 4 Compositio Mathematica 4 Czechoslovak Mathematical Journal 4 Annals of Global Analysis and Geometry 4 Communications in Partial Differential Equations 4 Journal de Mathématiques Pures et Appliquées. Neuvième Série 4 Filomat 4 Banach Journal of Mathematical Analysis 3 Israel Journal of Mathematics 3 Journal of Mathematical Physics 3 Rocky Mountain Journal of Mathematics 3 Studia Mathematica 3 Bulletin. Classe des Sciences Mathématiques et Naturelles. Sciences Mathématiques 3 Acta Mathematica 3 Annales Scientifiques de l’École Normale Supérieure. Quatrième Série 3 Tôhoku Mathematical Journal. Second Series 3 Indagationes Mathematicae. New Series 3 Bulletin des Sciences Mathématiques 3 Discrete and Continuous Dynamical Systems 3 Abstract and Applied Analysis 3 Journal of Evolution Equations 3 Discrete and Continuous Dynamical Systems. Series B 3 Bulletin of the American Mathematical Society 3 Complex Analysis and Operator Theory 2 Analysis Mathematica 2 Letters in Mathematical Physics 2 Mathematical Methods in the Applied Sciences 2 Mathematical Notes 2 Periodica Mathematica Hungarica 2 Ukrainian Mathematical Journal 2 Journal of Geometry and Physics 2 Annales Polonici Mathematici 2 Duke Mathematical Journal 2 Inventiones Mathematicae 2 Journal of Soviet Mathematics 2 Publications de l’Institut Mathématique. Nouvelle Série 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Rendiconti del Seminario Matemàtico e Fisico di Milano 2 SIAM Journal on Numerical Analysis 2 Zeitschrift für Analysis und ihre Anwendungen 2 Stochastic Analysis and Applications 2 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 2 Journal of the American Mathematical Society 2 Forum Mathematicum 2 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences 2 Aequationes Mathematicae 2 Expositiones Mathematicae 2 Annales de la Faculté des Sciences de Toulouse. Mathématiques. Série VI 2 Potential Analysis 2 Annales Academiae Scientiarum Fennicae. Mathematica 2 Positivity 2 Novi Sad Journal of Mathematics 2 Journal of Dynamical and Control Systems 2 Communications in Contemporary Mathematics 2 Annales Mathematicae Silesianae 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Communications on Pure and Applied Analysis 2 Journal of Function Spaces and Applications 2 Mediterranean Journal of Mathematics 2 Sarajevo Journal of Mathematics 2 Complex Variables and Elliptic Equations ...and 92 more Serials all top 5 Cited in 54 Fields 352 Functional analysis (46-XX) 316 Partial differential equations (35-XX) 198 Operator theory (47-XX) 92 Several complex variables and analytic spaces (32-XX) 68 Real functions (26-XX) 66 Global analysis, analysis on manifolds (58-XX) 62 Ordinary differential equations (34-XX) 52 Functions of a complex variable (30-XX) 51 Harmonic analysis on Euclidean spaces (42-XX) 33 Integral transforms, operational calculus (44-XX) 25 Probability theory and stochastic processes (60-XX) 21 Quantum theory (81-XX) 19 Fluid mechanics (76-XX) 17 Topological groups, Lie groups (22-XX) 17 Abstract harmonic analysis (43-XX) 12 Dynamical systems and ergodic theory (37-XX) 11 Integral equations (45-XX) 10 Algebraic geometry (14-XX) 10 Numerical analysis (65-XX) 9 Potential theory (31-XX) 9 Sequences, series, summability (40-XX) 8 Differential geometry (53-XX) 7 Mathematical logic and foundations (03-XX) 7 Approximations and expansions (41-XX) 7 Systems theory; control (93-XX) 6 Category theory; homological algebra (18-XX) 5 Special functions (33-XX) 4 Commutative algebra (13-XX) 4 Algebraic topology (55-XX) 4 Biology and other natural sciences (92-XX) 3 History and biography (01-XX) 3 Field theory and polynomials (12-XX) 3 Manifolds and cell complexes (57-XX) 3 Mechanics of particles and systems (70-XX) 3 Statistical mechanics, structure of matter (82-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Associative rings and algebras (16-XX) 2 Measure and integration (28-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 2 Geometry (51-XX) 2 General topology (54-XX) 2 Mechanics of deformable solids (74-XX) 2 Optics, electromagnetic theory (78-XX) 2 Classical thermodynamics, heat transfer (80-XX) 1 Combinatorics (05-XX) 1 Number theory (11-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Nonassociative rings and algebras (17-XX) 1 Group theory and generalizations (20-XX) 1 Difference and functional equations (39-XX) 1 Computer science (68-XX) 1 Astronomy and astrophysics (85-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Information and communication theory, circuits (94-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. Updates and corrections should be made in Wikidata.