## Cowen, Carl C.

Compute Distance To:
 Author ID: cowen.carl-c Published as: Cowen, Carl C.; Cowen, C. C.
 Documents Indexed: 50 Publications since 1978, including 1 Book 1 Contribution as Editor Co-Authors: 34 Co-Authors with 33 Joint Publications 523 Co-Co-Authors
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### Co-Authors

 18 single-authored 7 Gallardo-Gutiérrez, Eva Antonia 6 MacCluer, Barbara D. 4 Ko, Eungil 3 Wahl, Rebecca G. 1 Angelos, James R. 1 Carroll, Tom 1 Crosby, D. E. 1 Davidson, Kenneth R. 1 Debro, Kelly E. 1 Dritschel, Michael A. 1 Felder, Christopher 1 Ferguson, Pamela A. 1 Gunatillake, Gajath 1 Horine, Thomas L. 1 Jackman, D. K. 1 Jafari, Farhad 1 Jung, Sungeun 1 Kaufman, Robert P. 1 Kriete, Thomas L. III 1 Li, Shaokuan 1 Long, John J. jun. 1 Narayan, Sivaram K. 1 Ortiz Albino, R. M. 1 Penney, Richard C. 1 Pommerenke, Christian 1 Porter, A. Duane 1 Richman, Alexander E. 1 Rubel, Lee Albert 1 Sepanski, Peter D. 1 Sexauer, E. A. 1 Thompson, Derek A. 1 Woolf, H. J. 1 Yeow, Y. C. 1 Zerbe, B. S.
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### Serials

 6 Journal of Functional Analysis 6 Linear Algebra and its Applications 4 Transactions of the American Mathematical Society 4 Journal of Operator Theory 3 Indiana University Mathematics Journal 3 Proceedings of the American Mathematical Society 2 Acta Scientiarum Mathematicarum 2 Integral Equations and Operator Theory 2 Journal für die Reine und Angewandte Mathematik 1 American Mathematical Monthly 1 Journal of Mathematical Analysis and Applications 1 Journal of the London Mathematical Society. Second Series 1 Pacific Journal of Mathematics 1 SIAM Journal on Matrix Analysis and Applications 1 Aequationes Mathematicae 1 Proceedings of the Royal Irish Academy. Section A, Mathematical and Physical Sciences 1 Taiwanese Journal of Mathematics 1 Contemporary Mathematics 1 Complex Analysis and Operator Theory 1 Concrete Operators
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### Fields

 41 Operator theory (47-XX) 13 Functions of a complex variable (30-XX) 8 Functional analysis (46-XX) 5 Linear and multilinear algebra; matrix theory (15-XX) 4 Several complex variables and analytic spaces (32-XX) 4 Difference and functional equations (39-XX) 1 General and overarching topics; collections (00-XX) 1 Sequences, series, summability (40-XX) 1 Convex and discrete geometry (52-XX)

### Citations contained in zbMATH Open

48 Publications have been cited 1,746 times in 1,218 Documents Cited by Year
Composition operators on spaces of analytic functions. Zbl 0873.47017
Cowen, Carl C.; MacCluer, Barbara D.
1995
Linear fractional composition operators on $$H^ 2$$. Zbl 0638.47027
Cowen, Carl C.
1988
Iteration and the solution of functional equations for functions analytic in the unit disk. Zbl 0476.30017
Cowen, Carl C.
1981
The commutant of an analytic Toeplitz operator. Zbl 0391.47014
Cowen, Carl C.
1978
Composition operators on $$H^ 2$$. Zbl 0504.47032
Cowen, Carl C.
1983
Hyponormality of Toeplitz operators. Zbl 0668.47021
Cowen, Carl C.
1988
Hermitian weighted composition operators on $$H^{2}$$. Zbl 1213.47034
Cowen, Carl C.; Ko, Eungil
2010
Linear fractional maps of the ball and their composition operators. Zbl 0970.47011
Cowen, Carl C.; MacCluer, Barbara D.
2000
Spectra of some composition operators. Zbl 0814.47040
Cowen, Carl C.; MacCluer, Barbara D.
1994
Subnormality and composition operators on $$H^ 2$$. Zbl 0669.47012
Cowen, Carl C.; Kriete, Thomas L. III
1988
An analytic Toeplitz operator that commutes with a compact operator and a related class of Toeplitz operators. Zbl 0438.47029
Cowen, Carl C.
1980
A new class of operators and a description of adjoints of composition operators. Zbl 1106.47023
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2006
Inequalities for the angular derivative of an analytic function in the unit disk. Zbl 0476.30001
Cowen, Carl C.; Pommerenke, Christian
1982
Some subnormal Toeplitz operators. Zbl 0532.47019
Cowen, Carl C.; Long, John J.
1984
Hermitian weighted composition operators and Bergman extremal functions. Zbl 1296.47025
Cowen, Carl C.; Gunatillake, Gajath; Ko, Eungil
2013
Hyponormal and subnormal Toeplitz operators. Zbl 0677.47017
Cowen, Carl C.
1988
The commutant of an analytic Toeplitz operator. II. Zbl 0408.47024
Cowen, Carl C.
1980
Normal and cohyponormal weighted composition operators on $$H^2$$. Zbl 1327.47019
Cowen, Carl C.; Jung, Sungeun; Ko, Eungil
2014
Subnormality of the Cesàro operator and a semigroup of composition operators. Zbl 0557.47018
Cowen, Carl C.
1984
More subnormal Toeplitz operators. Zbl 0577.47025
Cowen, Carl C.
1986
Commuting analytic functions. Zbl 0542.30030
Cowen, Carl C.
1984
Triangular truncation and finding the norm of a Hadamard multiplier. Zbl 0751.15010
Angelos, James R.; Cowen, Carl C.; Narayan, Sivaram K.
1992
On equivalence of Toeplitz operators. Zbl 0489.47012
Cowen, Carl C.
1982
Compact composition operators not in the Schatten classes. Zbl 0792.47031
Carroll, Tom; Cowen, Carl C.
1991
Some problems on composition operators. Zbl 0908.47025
Cowen, Carl C.; MacCluer, Barbara D.
1998
Spectra of some weighted composition operators on $$H^2$$. Zbl 1399.47083
Cowen, Carl C.; Ko, Eungil; Thompson, Derek; Tian, Feng
2016
Geometry and the norms of Hadamard multipliers. Zbl 0821.15018
Cowen, Carl C.; Debro, Kelly E.; Sepanski, Peter D.
1995
Schroeder’s equation in several variables. Zbl 1033.32011
Cowen, Carl C.; MacCluer, Barbara D.
2003
Norms of Hadamard multipliers. Zbl 0793.15017
Cowen, Carl C.; Dritschel, Michael A.; Penney, Richard C.
1994
Unitary equivalence of one-parameter groups of Toeplitz and composition operators. Zbl 1242.47022
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2011
Geometric properties of linear fractional maps. Zbl 1109.32011
Cowen, C. C.; Richman, A. E.; Crosby, D. E.; Horine, T. L.; Ortiz Albino, R. M.; Yeow, Y. C.; Zerbe, B. S.
2006
Commutants of finite Blaschke product multiplication operators. Zbl 1353.47047
Cowen, Carl C.; Wahl, Rebecca G.
2015
Analytic solutions of Boettcher’s functional equation in the unit disk. Zbl 0526.30033
Cowen, Carl C.
1982
Shift-invariant subspaces invariant for composition operators on the Hardy-Hilbert space. Zbl 1309.47020
Cowen, Carl C.; Wahl, Rebecca G.
2014
Composition operators on Hilbert spaces of analytic functions: A status report. Zbl 0713.47029
Cowen, Carl C.
1990
Consequences of universality among Toeplitz operators. Zbl 1334.47011
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2015
Studies on composition operators. Proceedings of the Rocky Mountain Mathematics Consortium, Laramie, WY, USA, July 8–19, 1996. Zbl 0880.00042
1998
A joint spectrum for shift invariant subspaces of $$H^ 2$$ of the polydisc. Zbl 0458.47027
Cowen, C. C.; Rubel, Lee A.
1980
Rota’s universal operators and invariant subspaces in Hilbert spaces. Zbl 1359.47006
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2016
Hilbert space operators that are subnormal in the Krein space sense. Zbl 0675.47020
Cowen, Carl C.; Li, Shaokuan
1988
An application of Hadamard multiplication to operators on weighted Hardy spaces. Zbl 0699.47018
Cowen, Carl C.
1990
An introduction to Rota’s universal operators: properties, old and new examples and future issues. Zbl 1344.47003
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2016
Commutants and the operator equation $$AX=\lambda XA$$. Zbl 0378.47016
Cowen, Carl C.
1979
Rearranging the alternating harmonic series. Zbl 0455.40003
Cowen, C. C.; Davidson, K. R.; Kaufman, R. P.
1980
Transferring subnormality of adjoint composition operators. Zbl 0773.47009
Cowen, Carl C.
1992
Finding norms of Hadamard multipliers. Zbl 0949.15032
Cowen, C. C.; Ferguson, P. A.; Jackman, D. K.; Sexauer, E. A.; Vogt, C.; Woolf, H. J.
1996
A new proof of a Nordgren, Rosenthal and Wintrobe theorem on universal operators. Zbl 1369.47008
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2017
Convexity of the Berezin range. Zbl 07523366
Cowen, Carl C.; Felder, Christopher
2022
Convexity of the Berezin range. Zbl 07523366
Cowen, Carl C.; Felder, Christopher
2022
A new proof of a Nordgren, Rosenthal and Wintrobe theorem on universal operators. Zbl 1369.47008
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2017
Spectra of some weighted composition operators on $$H^2$$. Zbl 1399.47083
Cowen, Carl C.; Ko, Eungil; Thompson, Derek; Tian, Feng
2016
Rota’s universal operators and invariant subspaces in Hilbert spaces. Zbl 1359.47006
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2016
An introduction to Rota’s universal operators: properties, old and new examples and future issues. Zbl 1344.47003
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2016
Commutants of finite Blaschke product multiplication operators. Zbl 1353.47047
Cowen, Carl C.; Wahl, Rebecca G.
2015
Consequences of universality among Toeplitz operators. Zbl 1334.47011
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2015
Normal and cohyponormal weighted composition operators on $$H^2$$. Zbl 1327.47019
Cowen, Carl C.; Jung, Sungeun; Ko, Eungil
2014
Shift-invariant subspaces invariant for composition operators on the Hardy-Hilbert space. Zbl 1309.47020
Cowen, Carl C.; Wahl, Rebecca G.
2014
Hermitian weighted composition operators and Bergman extremal functions. Zbl 1296.47025
Cowen, Carl C.; Gunatillake, Gajath; Ko, Eungil
2013
Unitary equivalence of one-parameter groups of Toeplitz and composition operators. Zbl 1242.47022
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2011
Hermitian weighted composition operators on $$H^{2}$$. Zbl 1213.47034
Cowen, Carl C.; Ko, Eungil
2010
A new class of operators and a description of adjoints of composition operators. Zbl 1106.47023
Cowen, Carl C.; Gallardo-Gutiérrez, Eva A.
2006
Geometric properties of linear fractional maps. Zbl 1109.32011
Cowen, C. C.; Richman, A. E.; Crosby, D. E.; Horine, T. L.; Ortiz Albino, R. M.; Yeow, Y. C.; Zerbe, B. S.
2006
Schroeder’s equation in several variables. Zbl 1033.32011
Cowen, Carl C.; MacCluer, Barbara D.
2003
Linear fractional maps of the ball and their composition operators. Zbl 0970.47011
Cowen, Carl C.; MacCluer, Barbara D.
2000
Some problems on composition operators. Zbl 0908.47025
Cowen, Carl C.; MacCluer, Barbara D.
1998
Studies on composition operators. Proceedings of the Rocky Mountain Mathematics Consortium, Laramie, WY, USA, July 8–19, 1996. Zbl 0880.00042
1998
Finding norms of Hadamard multipliers. Zbl 0949.15032
Cowen, C. C.; Ferguson, P. A.; Jackman, D. K.; Sexauer, E. A.; Vogt, C.; Woolf, H. J.
1996
Composition operators on spaces of analytic functions. Zbl 0873.47017
Cowen, Carl C.; MacCluer, Barbara D.
1995
Geometry and the norms of Hadamard multipliers. Zbl 0821.15018
Cowen, Carl C.; Debro, Kelly E.; Sepanski, Peter D.
1995
Spectra of some composition operators. Zbl 0814.47040
Cowen, Carl C.; MacCluer, Barbara D.
1994
Norms of Hadamard multipliers. Zbl 0793.15017
Cowen, Carl C.; Dritschel, Michael A.; Penney, Richard C.
1994
Triangular truncation and finding the norm of a Hadamard multiplier. Zbl 0751.15010
Angelos, James R.; Cowen, Carl C.; Narayan, Sivaram K.
1992
Transferring subnormality of adjoint composition operators. Zbl 0773.47009
Cowen, Carl C.
1992
Compact composition operators not in the Schatten classes. Zbl 0792.47031
Carroll, Tom; Cowen, Carl C.
1991
Composition operators on Hilbert spaces of analytic functions: A status report. Zbl 0713.47029
Cowen, Carl C.
1990
An application of Hadamard multiplication to operators on weighted Hardy spaces. Zbl 0699.47018
Cowen, Carl C.
1990
Linear fractional composition operators on $$H^ 2$$. Zbl 0638.47027
Cowen, Carl C.
1988
Hyponormality of Toeplitz operators. Zbl 0668.47021
Cowen, Carl C.
1988
Subnormality and composition operators on $$H^ 2$$. Zbl 0669.47012
Cowen, Carl C.; Kriete, Thomas L. III
1988
Hyponormal and subnormal Toeplitz operators. Zbl 0677.47017
Cowen, Carl C.
1988
Hilbert space operators that are subnormal in the Krein space sense. Zbl 0675.47020
Cowen, Carl C.; Li, Shaokuan
1988
More subnormal Toeplitz operators. Zbl 0577.47025
Cowen, Carl C.
1986
Some subnormal Toeplitz operators. Zbl 0532.47019
Cowen, Carl C.; Long, John J.
1984
Subnormality of the Cesàro operator and a semigroup of composition operators. Zbl 0557.47018
Cowen, Carl C.
1984
Commuting analytic functions. Zbl 0542.30030
Cowen, Carl C.
1984
Composition operators on $$H^ 2$$. Zbl 0504.47032
Cowen, Carl C.
1983
Inequalities for the angular derivative of an analytic function in the unit disk. Zbl 0476.30001
Cowen, Carl C.; Pommerenke, Christian
1982
On equivalence of Toeplitz operators. Zbl 0489.47012
Cowen, Carl C.
1982
Analytic solutions of Boettcher’s functional equation in the unit disk. Zbl 0526.30033
Cowen, Carl C.
1982
Iteration and the solution of functional equations for functions analytic in the unit disk. Zbl 0476.30017
Cowen, Carl C.
1981
An analytic Toeplitz operator that commutes with a compact operator and a related class of Toeplitz operators. Zbl 0438.47029
Cowen, Carl C.
1980
The commutant of an analytic Toeplitz operator. II. Zbl 0408.47024
Cowen, Carl C.
1980
A joint spectrum for shift invariant subspaces of $$H^ 2$$ of the polydisc. Zbl 0458.47027
Cowen, C. C.; Rubel, Lee A.
1980
Rearranging the alternating harmonic series. Zbl 0455.40003
Cowen, C. C.; Davidson, K. R.; Kaufman, R. P.
1980
Commutants and the operator equation $$AX=\lambda XA$$. Zbl 0378.47016
Cowen, Carl C.
1979
The commutant of an analytic Toeplitz operator. Zbl 0391.47014
Cowen, Carl C.
1978
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### Cited by 816 Authors

 49 Stević, Stevo 43 Zhou, Zehua 33 Wang, Maofa 30 Gallardo-Gutiérrez, Eva Antonia 30 Koo, Hyungwoon 27 Li, Songxiao 26 Liang, Yuxia 24 Lee, Woo Young 23 Choe, Boo Rim 23 Ko, Eungil 23 Zhu, Xiangling 22 Cowen, Carl C. 21 Lindström, Mikael 21 Wolf, Elke 20 Bracci, Filippo 20 Queffélec, Hervé 19 Contreras, Manuel D. 19 Hwang, In Sung 19 Lê Hai Khôi 19 Rodríguez-Piazza, Luis 17 Bourdon, Paul S. 17 Díaz-Madrigal, Santiago 17 Ohno, Shûichi 14 Curto, Raúl Enrique 14 Jung, Sungeun 14 Lefèvre, Pascal 14 Li, Daniel 13 Huang, Hansong 13 Partington, Jonathan R. 13 Smith, Wayne Stewart 12 Fatehi, Mahsa 12 Izuchi, Keiji 12 Shoikhet, David 12 Vaezi, Hamid 12 Zhao, Ruhan 11 Chalendar, Isabelle 11 Colonna, Flavia 11 Jiang, Zhijie 10 Bonet Solves, José 10 Galindo, Pablo 10 Gu, Caixing 10 Guo, Xin 10 Liu, Yongmin 10 Phạm Trọng Tiến 10 Shapiro, Joel H. 9 Allen, Robert F. 9 Cao, Guangfu 9 Doubtsov, Evgueni Sergeevich 9 Gunatillake, Gajath 9 MacCluer, Barbara D. 9 Matache, Valentin 9 Rättyä, Jouni 9 Vukotić, Dragan 9 Yao, Xingxing 8 Hammond, Christopher N. B. 8 Lu, Yufeng 8 Tjani, Maria 8 Yu, Yanyan 7 Elin, Mark 7 Fang, Zhongshan 7 Han, Kaikai 7 Hosokawa, Takuya 7 Hu, Qinghua 7 Izuchi, Yuko 7 Laitila, Jussi 7 Lee, Jieun 7 Lee, Jun Ik 7 Liu, Junming 7 Martín, María J. 7 Nieminen, Pekka J. 7 Pons, Matthew A. 7 Shi, Yecheng 7 Tong, Cezhong 7 Ueki, Sei-ichiro 7 Yuan, Cheng 7 Zheng, Dechao 6 Abbasi, Ebrahim 6 Arosio, Leandro 6 Bayart, Frédéric 6 Charpentier, Stéphane 6 Chen, Yong 6 Dai, Jineng 6 Eklund, Ted 6 Garayev, Mübariz Tapdıgoğlu 6 Gumenyuk, Pavel 6 Guo, Kunyu 6 Guo, Zhitao 6 Jiang, Liangying 6 Jordá, Enrique 6 Kang, Dong-Oh 6 Kim, Yoenha 6 Le, Trieu 6 Mashreghi, Javad 6 Narayan, Sivaram K. 6 Park, Inyoung 6 Pham Viet Hai 6 Sadraoui, Houcine 6 Shaabani, Mahmood Haji 6 Singh Manhas, Jasbir 6 Yang, Weifeng ...and 716 more Authors
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### Cited in 190 Serials

 144 Journal of Mathematical Analysis and Applications 68 Journal of Functional Analysis 68 Complex Analysis and Operator Theory 61 Integral Equations and Operator Theory 60 Proceedings of the American Mathematical Society 39 Applied Mathematics and Computation 35 Complex Variables and Elliptic Equations 32 Transactions of the American Mathematical Society 30 Linear Algebra and its Applications 30 Abstract and Applied Analysis 20 Advances in Mathematics 19 Journal of Inequalities and Applications 17 Bulletin of the Australian Mathematical Society 17 Mediterranean Journal of Mathematics 15 Archiv der Mathematik 15 Computational Methods and Function Theory 15 Operators and Matrices 13 Rocky Mountain Journal of Mathematics 13 Journal of Function Spaces 12 Comptes Rendus. Mathématique. Académie des Sciences, Paris 12 Banach Journal of Mathematical Analysis 11 Journal d’Analyse Mathématique 11 International Journal of Mathematics 11 Mathematical Inequalities & Applications 10 Collectanea Mathematica 10 Mathematische Zeitschrift 10 Numerical Functional Analysis and Optimization 10 Acta Mathematica Sinica. English Series 9 Israel Journal of Mathematics 9 Czechoslovak Mathematical Journal 9 Concrete Operators 8 Mathematische Nachrichten 8 Filomat 8 Communications of the Korean Mathematical Society 8 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 7 Glasgow Mathematical Journal 7 Results in Mathematics 7 Journal of the Australian Mathematical Society 7 Science China. Mathematics 6 Revista Matemática Iberoamericana 6 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 6 Journal of Mathematical Sciences (New York) 6 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 6 Journal of Function Spaces and Applications 6 Annals of Functional Analysis 6 Analysis and Mathematical Physics 5 Mathematische Annalen 5 The Journal of Geometric Analysis 5 Potential Analysis 5 Acta Mathematica Scientia. Series B. (English Edition) 4 Linear and Multilinear Algebra 4 Annali di Matematica Pura ed Applicata. Serie Quarta 4 Illinois Journal of Mathematics 4 International Journal of Mathematics and Mathematical Sciences 4 Michigan Mathematical Journal 4 Monatshefte für Mathematik 4 Rendiconti del Circolo Matemàtico di Palermo. Serie II 4 Bulletin of the Korean Mathematical Society 4 Science in China. Series A 4 Indagationes Mathematicae. New Series 4 Bulletin des Sciences Mathématiques 4 Open Mathematics 3 Mathematical Notes 3 Mathematical Proceedings of the Cambridge Philosophical Society 3 Periodica Mathematica Hungarica 3 Studia Mathematica 3 Bulletin of the London Mathematical Society 3 Kyungpook Mathematical Journal 3 Memoirs of the American Mathematical Society 3 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 3 Quaestiones Mathematicae 3 Journal de Mathématiques Pures et Appliquées. Neuvième Série 3 Expositiones Mathematicae 3 Advances in Applied Clifford Algebras 3 Integral Transforms and Special Functions 3 Annales Academiae Scientiarum Fennicae. Mathematica 3 Vietnam Journal of Mathematics 3 Taiwanese Journal of Mathematics 3 Wuhan University Journal of Natural Sciences (WUJNS) 3 Revista Matemática Complutense 3 Asian-European Journal of Mathematics 2 Analysis Mathematica 2 Arkiv för Matematik 2 Acta Mathematica Vietnamica 2 Annales de l’Institut Fourier 2 Annales Polonici Mathematici 2 Annales Universitatis Mariae Curie-Skłodowska. Sectio A. Mathematica 2 Canadian Mathematical Bulletin 2 Journal of Approximation Theory 2 Journal of the Korean Mathematical Society 2 Journal für die Reine und Angewandte Mathematik 2 Journal of Soviet Mathematics 2 Mathematica Slovaca 2 Proceedings of the Edinburgh Mathematical Society. Series II 2 Semigroup Forum 2 SIAM Journal on Control and Optimization 2 Tôhoku Mathematical Journal. Second Series 2 Chinese Annals of Mathematics. Series B 2 Bulletin of the Iranian Mathematical Society 2 Constructive Approximation ...and 90 more Serials
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### Cited in 43 Fields

 1,034 Operator theory (47-XX) 554 Functions of a complex variable (30-XX) 331 Functional analysis (46-XX) 192 Several complex variables and analytic spaces (32-XX) 47 Dynamical systems and ergodic theory (37-XX) 31 Linear and multilinear algebra; matrix theory (15-XX) 20 Potential theory (31-XX) 14 Harmonic analysis on Euclidean spaces (42-XX) 13 Integral equations (45-XX) 12 Difference and functional equations (39-XX) 7 Numerical analysis (65-XX) 6 Real functions (26-XX) 5 Combinatorics (05-XX) 5 Global analysis, analysis on manifolds (58-XX) 4 Computer science (68-XX) 4 Operations research, mathematical programming (90-XX) 4 Systems theory; control (93-XX) 3 Number theory (11-XX) 3 Algebraic geometry (14-XX) 3 Group theory and generalizations (20-XX) 3 Special functions (33-XX) 3 Partial differential equations (35-XX) 3 Sequences, series, summability (40-XX) 3 Approximations and expansions (41-XX) 3 Abstract harmonic analysis (43-XX) 3 Convex and discrete geometry (52-XX) 2 Topological groups, Lie groups (22-XX) 2 Ordinary differential equations (34-XX) 2 Integral transforms, operational calculus (44-XX) 2 Geometry (51-XX) 2 Differential geometry (53-XX) 2 Probability theory and stochastic processes (60-XX) 2 Quantum theory (81-XX) 1 Mathematical logic and foundations (03-XX) 1 Commutative algebra (13-XX) 1 Associative rings and algebras (16-XX) 1 Nonassociative rings and algebras (17-XX) 1 $$K$$-theory (19-XX) 1 Measure and integration (28-XX) 1 General topology (54-XX) 1 Manifolds and cell complexes (57-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Information and communication theory, circuits (94-XX)