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## Soh, Cheong Boon

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 Author ID: soh.cheong-boon Published as: Soh, C. B.; Soh, C.-B.; Soh, Cheong Boon; Soh, Cheong-Boon
 Documents Indexed: 80 Publications since 1985
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#### Co-Authors

 31 single-authored 12 Gunawan, Erry 9 Dong, Xuedong 9 Wang, Jianliang 8 Berger, C. S. 8 Li, Zhengguo 6 Dabke, Kishor P. 6 Xu, Xinhe 5 Chai, Tianyou 5 Lin, Chong 5 Yang, Guanghong 3 Tang, Lizhong 3 Wang, Dianhui 3 Wang, Weihua 2 Li, Zhonghua 2 Soong, Boon-Hee 2 Tan, P. T. 2 Wen, Changyun 1 Chan, Chi Kyet 1 Cong, Lanmei 1 Foo, Yung Kuan 1 Goh, H. C. 1 Lam, James 1 Li, Chong 1 Lie, Tek Tjing 1 Lim, Teik-Cheng 1 Lim, Young-Hun 1 Liu, Yuqiong 1 Soh, Yeng Chai 1 Teo, C. K. 1 Weng, Wulin 1 Zhang, Yongbing
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#### Serials

 23 International Journal of Systems Science 11 International Journal of Control 11 IEEE Transactions on Automatic Control 7 IMA Journal of Mathematical Control and Information 5 Linear Algebra and its Applications 3 Automatica 3 Systems & Control Letters 2 IEEE Transactions on Information Theory 2 International Journal of Robust and Nonlinear Control 1 Communications in Algebra 1 Journal of Mathematical Analysis and Applications 1 IEEE Transactions on Circuits and Systems 1 Information Sciences 1 Journal of Algebra 1 Dynamics and Control 1 IEEE Transactions on Circuits and Systems. I: Fundamental Theory and Applications 1 IEE Proceedings. Part D. Control Theory and Applications 1 Journal of Mathematical Systems, Estimation, and Control 1 IEE Proceedings. Control Theory and Applications 1 Finite Fields and their Applications 1 International Journal of Communication Systems
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#### Fields

 64 Systems theory; control (93-XX) 11 Functions of a complex variable (30-XX) 10 Information and communication theory, circuits (94-XX) 6 Number theory (11-XX) 6 Linear and multilinear algebra; matrix theory (15-XX) 5 Ordinary differential equations (34-XX) 4 Numerical analysis (65-XX) 3 Operations research, mathematical programming (90-XX) 2 Field theory and polynomials (12-XX) 2 Real functions (26-XX) 2 Convex and discrete geometry (52-XX) 2 Computer science (68-XX) 1 Associative rings and algebras (16-XX) 1 Group theory and generalizations (20-XX)

#### Citations contained in zbMATH

53 Publications have been cited 232 times in 197 Documents Cited by Year
On the stability properties of polynomials with perturbed coefficients. Zbl 0565.93054
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
Robust stability of discrete-time systems using delta operators. Zbl 0737.93062
Soh, C. B.
1991
A note on the $$q$$-ary image of a $$q^ m$$-ary repeated-root cyclic code. Zbl 0872.94051
Tang, Li-zhong; Soh, Cheong Boon; Gunawan, Erry
1997
Stability of impulsive differential systems. Zbl 0899.34010
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1997
Necessary and sufficient conditions for stability of symmetric interval matrices. Zbl 0694.93077
Soh, C. B.
1990
On regularizing singular systems by decentralized output feedback. Zbl 1056.93501
Wang, Dianhui; Soh, C. B.
1999
Robustness of uncertain descriptor systems. Zbl 0901.93043
Lin, Chong; Wang, Jianliang; Wang, Dianhui; Soh, C. B.
1997
Robust $$C$$-controllability and/or $$C$$-observability for uncertain descriptor systems with interval perturbations in all matrices. Zbl 0957.93005
Lin, Chong; Wang, Jian Liang; Yang, Guang-Hong; Soh, C. B.
1999
Robust controllability and robust closed-loop stability with static output feedback for a class of uncertain descriptor systems. Zbl 0941.93031
Lin, Chong; Wang, Jian Liang; Yang, Guang-Hong; Soh, C. B.
1999
Damping margins of polynomials with perturbed coefficients. Zbl 0643.93059
Soh, C. B.; Berger, C. S.
1988
Lyapunov stability of a class of hybrid dynamic systems. Zbl 0952.93102
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
2000
Necessary and sufficient conditions for the controllability of linear interval descriptor systems. Zbl 0908.93012
Lin, Chong; Wang, Jianliang; Soh, C.-B.
1998
Maximum bounds for robust stability of linear uncertain descriptor systems with structured perturbations. Zbl 1069.93029
Lin, Chong; Wang, Jianliang; Soh, C. B.
2003
Robust stability of a class of hybrid dynamic uncertain systems. Zbl 0916.93058
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1998
Robust output tracking for nonlinear uncertain systems. Zbl 0877.93048
Li, Zhong-hua; Chai, Tian-You; Wen, Changyun; Soh, Cheong-Boon
1995
Stability of hybrid dynamic systems. Zbl 0889.93042
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1997
Consistent parameter estimation of systems disturbed by correlated noise. Zbl 0876.93098
Zhang, Y.; Lie, T. T.; Soh, C. B.
1997
Stability robustness measures of state-space models. Zbl 0757.93067
Soh, C. B.
1991
Schur stability of convex combination of matrices. Zbl 0703.15014
Soh, C. B.
1990
Stability margins of continuous time interval systems. Zbl 0732.93063
Soh, C. B.
1991
Correcting Argoun’s approach for the stability of interval matrices. Zbl 0714.93036
Soh, C. B.
1990
Invariance of the aperiodic property for polynomials with perturbed coefficients. Zbl 0708.93015
Soh, C. B.
1990
Comments on ‘Convergence property of interval matrices and interval polynomials’. Zbl 0683.93063
Soh, C. B.
1989
A simple approach to stabilization of discrete-time systems by output feedback. Zbl 0587.93051
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
Robust structural stability of linear interval descriptor systems. Zbl 1033.93519
Li, Chong; Wang, Jianliang; Soh, C. B.
1999
Robust controllability and observability of impulsive interval hybrid dynamic systems. Zbl 1033.93006
Li, Z.; Soh, C. B.
1999
Controllability and observability of impulsive hybrid dynamic systems. Zbl 0943.93015
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1999
Matrix characterization of MDS linear codes over modules. Zbl 1125.94340
Dong, Xue-Dong; Soh, Cheong Boon; Gunawan, Erry
1998
Reliable nonlinear control system design by using strictly redundant control elements. Zbl 0930.93037
Yang, Guang-Hong; Wang, Jianliang; Soh, C. B.
1998
Robust stabilization of MIMO nonlinear time-varying mismatched uncertain systems. Zbl 0906.93051
Wang, Wei-Hua; Soh, Cheong-Boon; Chai, Tian-You
1997
On a root distribution criterion for interval polynomials. Zbl 0775.93079
Soh, C. B.
1992
Necessary and sufficient condition for the existence of Kharitonov-like theorems. Zbl 0784.93058
Soh, C. B.
1991
Generalization of the Hermite-Biehler theorem and applications. Zbl 0704.93046
Soh, C. B.
1990
Controllability and observability of periodic hybrid interval systems. Zbl 1080.93616
Soh, C. B.
2000
Robust stability of impulsive periodic hybrid systems with dependent perturbations. Zbl 1080.93615
Soh, C. B.
2000
Adaptive neural model-based decentralized predictive control. Zbl 1080.93630
Wang, D. H.; Soh, C. B.
2000
Robust stability of perturbed periodic hybrid systems. Zbl 1033.93520
Soh, C. B.
1999
Decentralized $$H_ \infty$$-controller design for nonlinear systems. Zbl 1056.93531
Yang, Guang-Hong; Wang, Jianliang; Soh, C. B.; Lam, James
1999
Lyapunov stability of discontinuous dynamic systems. Zbl 0940.93054
Li, Z.; Soh, C. B.
1999
Linear block codes for four-dimensional signals. Zbl 0929.94029
Dong, Xuedong; Soh, Cheong Boon; Gunawan, Erry
1999
Groups of algebraic integers used for coding QAM signals. Zbl 0935.94004
Dong, Xuedong; Soh, Cheong Boon; Gunawan, Erry; Tang, Lizhong
1998
Reliable nonlinear control system design using duplicated control elements. Zbl 0898.93012
Liu, Yuqiong; Wang, Jianliang; Yang, Guang-Hong; Soh, C. B.
1997
Adaptive robust control of nonlinear uncertain systems. Zbl 0844.93071
Li, Zhong-Hua; Chai, Tian-You; Soh, Cheong-Boon; Wen, Changyun
1995
Frequency domain criteria for robust root locations of generalized disc polynomials. Zbl 0772.93069
Soh, C. B.
1992
Robust discrete time systems using delta operators. Zbl 0733.93047
Soh, C. B.
1991
Invariance of the dynamic properties of a linear continuous time system. Zbl 0742.93054
Soh, C. B.; Goh, H. C.; Teo, C. K.
1991
Strict aperiodic property of a polynomial set with coefficients on a diamond and generalizations. Zbl 0726.93066
Soh, C. B.
1990
Damping margin of continuous-time systems with polytope uncertainties. Zbl 0698.93069
Soh, C. B.
1990
A simple geometrical proof of the box theorem. Zbl 0742.93040
Soh, C. B.
1990
Destabilizing perturbations for linear systems. Zbl 0686.93069
Soh, C. B.; Chan, C. K.
1989
Perturbed polynomials with zeros in the left-sector. Zbl 0685.93024
Soh, Y. C.; Foo, Y. K.; Soh, C. B.
1989
Damping ratio of polynomials with perturbed coefficients. Zbl 0661.93061
Soh, C. B.; Berger, C. S.
1988
Some properties of the canonical parameter space. Zbl 0566.93049
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
Maximum bounds for robust stability of linear uncertain descriptor systems with structured perturbations. Zbl 1069.93029
Lin, Chong; Wang, Jianliang; Soh, C. B.
2003
Lyapunov stability of a class of hybrid dynamic systems. Zbl 0952.93102
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
2000
Controllability and observability of periodic hybrid interval systems. Zbl 1080.93616
Soh, C. B.
2000
Robust stability of impulsive periodic hybrid systems with dependent perturbations. Zbl 1080.93615
Soh, C. B.
2000
Adaptive neural model-based decentralized predictive control. Zbl 1080.93630
Wang, D. H.; Soh, C. B.
2000
On regularizing singular systems by decentralized output feedback. Zbl 1056.93501
Wang, Dianhui; Soh, C. B.
1999
Robust $$C$$-controllability and/or $$C$$-observability for uncertain descriptor systems with interval perturbations in all matrices. Zbl 0957.93005
Lin, Chong; Wang, Jian Liang; Yang, Guang-Hong; Soh, C. B.
1999
Robust controllability and robust closed-loop stability with static output feedback for a class of uncertain descriptor systems. Zbl 0941.93031
Lin, Chong; Wang, Jian Liang; Yang, Guang-Hong; Soh, C. B.
1999
Robust structural stability of linear interval descriptor systems. Zbl 1033.93519
Li, Chong; Wang, Jianliang; Soh, C. B.
1999
Robust controllability and observability of impulsive interval hybrid dynamic systems. Zbl 1033.93006
Li, Z.; Soh, C. B.
1999
Controllability and observability of impulsive hybrid dynamic systems. Zbl 0943.93015
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1999
Robust stability of perturbed periodic hybrid systems. Zbl 1033.93520
Soh, C. B.
1999
Decentralized $$H_ \infty$$-controller design for nonlinear systems. Zbl 1056.93531
Yang, Guang-Hong; Wang, Jianliang; Soh, C. B.; Lam, James
1999
Lyapunov stability of discontinuous dynamic systems. Zbl 0940.93054
Li, Z.; Soh, C. B.
1999
Linear block codes for four-dimensional signals. Zbl 0929.94029
Dong, Xuedong; Soh, Cheong Boon; Gunawan, Erry
1999
Necessary and sufficient conditions for the controllability of linear interval descriptor systems. Zbl 0908.93012
Lin, Chong; Wang, Jianliang; Soh, C.-B.
1998
Robust stability of a class of hybrid dynamic uncertain systems. Zbl 0916.93058
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1998
Matrix characterization of MDS linear codes over modules. Zbl 1125.94340
Dong, Xue-Dong; Soh, Cheong Boon; Gunawan, Erry
1998
Reliable nonlinear control system design by using strictly redundant control elements. Zbl 0930.93037
Yang, Guang-Hong; Wang, Jianliang; Soh, C. B.
1998
Groups of algebraic integers used for coding QAM signals. Zbl 0935.94004
Dong, Xuedong; Soh, Cheong Boon; Gunawan, Erry; Tang, Lizhong
1998
A note on the $$q$$-ary image of a $$q^ m$$-ary repeated-root cyclic code. Zbl 0872.94051
Tang, Li-zhong; Soh, Cheong Boon; Gunawan, Erry
1997
Stability of impulsive differential systems. Zbl 0899.34010
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1997
Robustness of uncertain descriptor systems. Zbl 0901.93043
Lin, Chong; Wang, Jianliang; Wang, Dianhui; Soh, C. B.
1997
Stability of hybrid dynamic systems. Zbl 0889.93042
Li, Zhengguo; Soh, Cheong Boon; Xu, Xinhe
1997
Consistent parameter estimation of systems disturbed by correlated noise. Zbl 0876.93098
Zhang, Y.; Lie, T. T.; Soh, C. B.
1997
Robust stabilization of MIMO nonlinear time-varying mismatched uncertain systems. Zbl 0906.93051
Wang, Wei-Hua; Soh, Cheong-Boon; Chai, Tian-You
1997
Reliable nonlinear control system design using duplicated control elements. Zbl 0898.93012
Liu, Yuqiong; Wang, Jianliang; Yang, Guang-Hong; Soh, C. B.
1997
Robust output tracking for nonlinear uncertain systems. Zbl 0877.93048
Li, Zhong-hua; Chai, Tian-You; Wen, Changyun; Soh, Cheong-Boon
1995
Adaptive robust control of nonlinear uncertain systems. Zbl 0844.93071
Li, Zhong-Hua; Chai, Tian-You; Soh, Cheong-Boon; Wen, Changyun
1995
On a root distribution criterion for interval polynomials. Zbl 0775.93079
Soh, C. B.
1992
Frequency domain criteria for robust root locations of generalized disc polynomials. Zbl 0772.93069
Soh, C. B.
1992
Robust stability of discrete-time systems using delta operators. Zbl 0737.93062
Soh, C. B.
1991
Stability robustness measures of state-space models. Zbl 0757.93067
Soh, C. B.
1991
Stability margins of continuous time interval systems. Zbl 0732.93063
Soh, C. B.
1991
Necessary and sufficient condition for the existence of Kharitonov-like theorems. Zbl 0784.93058
Soh, C. B.
1991
Robust discrete time systems using delta operators. Zbl 0733.93047
Soh, C. B.
1991
Invariance of the dynamic properties of a linear continuous time system. Zbl 0742.93054
Soh, C. B.; Goh, H. C.; Teo, C. K.
1991
Necessary and sufficient conditions for stability of symmetric interval matrices. Zbl 0694.93077
Soh, C. B.
1990
Schur stability of convex combination of matrices. Zbl 0703.15014
Soh, C. B.
1990
Correcting Argoun’s approach for the stability of interval matrices. Zbl 0714.93036
Soh, C. B.
1990
Invariance of the aperiodic property for polynomials with perturbed coefficients. Zbl 0708.93015
Soh, C. B.
1990
Generalization of the Hermite-Biehler theorem and applications. Zbl 0704.93046
Soh, C. B.
1990
Strict aperiodic property of a polynomial set with coefficients on a diamond and generalizations. Zbl 0726.93066
Soh, C. B.
1990
Damping margin of continuous-time systems with polytope uncertainties. Zbl 0698.93069
Soh, C. B.
1990
A simple geometrical proof of the box theorem. Zbl 0742.93040
Soh, C. B.
1990
Comments on ‘Convergence property of interval matrices and interval polynomials’. Zbl 0683.93063
Soh, C. B.
1989
Destabilizing perturbations for linear systems. Zbl 0686.93069
Soh, C. B.; Chan, C. K.
1989
Perturbed polynomials with zeros in the left-sector. Zbl 0685.93024
Soh, Y. C.; Foo, Y. K.; Soh, C. B.
1989
Damping margins of polynomials with perturbed coefficients. Zbl 0643.93059
Soh, C. B.; Berger, C. S.
1988
Damping ratio of polynomials with perturbed coefficients. Zbl 0661.93061
Soh, C. B.; Berger, C. S.
1988
On the stability properties of polynomials with perturbed coefficients. Zbl 0565.93054
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
A simple approach to stabilization of discrete-time systems by output feedback. Zbl 0587.93051
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
Some properties of the canonical parameter space. Zbl 0566.93049
Soh, C. B.; Berger, C. S.; Dabke, K. P.
1985
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#### Cited by 334 Authors

 10 Dinh, Hai Quang 10 Soh, Cheong Boon 10 Yang, Hongjiu 8 Xia, Yuanqing 7 Soh, Yeng Chai 6 Shi, Peng 5 Sriboonchitta, Songsak 4 Chen, Wuhua 4 Matveev, Alexey S. 4 Petrenko, Pavel Sergeevich 4 Qiu, Jiqing 4 Savkin, Andrey V. 4 Sun, Ji Tao 4 Zhang, Qingling 4 Zheng, Wei Xing 3 Chen, Shinn-Horng 3 Chou, Jyhhorng 3 Foo, Yung Kuan 3 Hinrichsen, Diederich 3 Lin, Chong 3 Liu, Bin 3 Liu, Hongwei 3 Mansour, Morkous S. 3 Shi, Bao 3 Szulc, Tomasz 3 Wang, Jianliang 3 Wen, Changyun 3 Yang, Shujie 3 Yu, Runyi 3 Zhang, Jinhui 3 Zhang, Yu 2 Aguirre-Hernández, Baltazar 2 Barmish, B. Ross 2 Bhattacharyya, Shankar Prashad 2 Chai, Tianyou 2 Dhompongsa, Sompong 2 Duan, Guangren 2 Elsner, Ludwig F. 2 Fang, Yuguang 2 Feng, Xiangbo 2 Fu, Mengyin 2 Fu, Minyue 2 Fu, Zhumu 2 Hill, David John 2 Huang, Chih-Peng 2 Jury, Eliahu I. 2 Karimi, Hamid Reza 2 Katbab, Abdollah 2 Keel, Lee H. 2 Klin-Eam, Chakkrid 2 Lam, James 2 Liu, Xinzhi 2 Liu, Xiusheng 2 Loparo, Kenneth A. 2 Mahmoud, Magdi Sadik Mostafa 2 Mehdi, Driss 2 Nesenchuk, A. A. 2 Qi, Xiaohui 2 Ren, Junchao 2 Sriwirach, Wateekorn 2 Sun, Yeong-Jeu 2 Tempo, Robert 2 Vicino, Antonio 2 Wan, Hui 2 Wang, Liqi 2 Wu, Qinghua 2 Wu, Xiaotai 2 Yan, Litan 2 Yang, Guanghong 2 Zhang, Wenbing 2 Zhu, Shi-xin 1 Abdallah, Chaouki Tanios 1 Álamo, Teodoro 1 Almutairi, Naif B. 1 Amini, Fatemeh 1 Anders, Jonathan W. 1 Aydin, Nuh 1 Babazadeh, Maryam 1 Bachelier, Olivier 1 Balachandran, Krishnan 1 Bandi, Ramakrishna 1 Bandyopadhyay, Bijnan 1 Bao, Shi 1 Bara, Gabriela Iuliana 1 Bartlett, Andrew C. 1 Bhaintwal, Maheshanand 1 Bhaya, Amit 1 Bi, Shuhui 1 Blondel, Vincent D. 1 Boonma, Sorasit 1 Boujarwah, A. S. 1 Calise, Anthony J. 1 Cao, Feilong 1 Caravani, Paolo 1 Cerone, Vito 1 Chaabane, Mohamed 1 Chadli, Mohammed 1 Chang, Fan-Ren 1 Chen, Bocong 1 Chen, Liang ...and 234 more Authors
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#### Cited in 61 Serials

 25 Automatica 19 International Journal of Control 18 Systems & Control Letters 16 International Journal of Systems Science 9 Linear Algebra and its Applications 8 Journal of the Franklin Institute 7 Circuits, Systems, and Signal Processing 7 International Journal of Robust and Nonlinear Control 5 Mathematical Problems in Engineering 4 Discrete Mathematics 4 Applied Mathematics and Computation 4 Finite Fields and their Applications 4 Abstract and Applied Analysis 3 Journal of Mathematical Analysis and Applications 3 Information Sciences 3 MCSS. Mathematics of Control, Signals, and Systems 3 Automation and Remote Control 3 International Journal of Systems Science. Principles and Applications of Systems and Integration 2 Linear and Multilinear Algebra 2 Chaos, Solitons and Fractals 2 Journal of Algebra 2 Journal of Optimization Theory and Applications 2 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 2 Multidimensional Systems and Signal Processing 2 International Journal of Adaptive Control and Signal Processing 2 Asian Journal of Control 1 Journal of Mathematical Physics 1 Fuzzy Sets and Systems 1 International Journal of Mathematics and Mathematical Sciences 1 Journal of Computational and Applied Mathematics 1 Kybernetika 1 Bulletin of the Korean Mathematical Society 1 Applied Mathematics and Mechanics. (English Edition) 1 Applied Numerical Mathematics 1 Journal of Complexity 1 Journal of Economic Dynamics & Control 1 Applied Mathematics Letters 1 Applied Mathematical Modelling 1 Applicable Algebra in Engineering, Communication and Computing 1 Russian Mathematics 1 Applied Mathematics. Series B (English Edition) 1 Journal of Mathematical Sciences (New York) 1 Numerical Linear Algebra with Applications 1 Complexity 1 Reliable Computing 1 ELA. The Electronic Journal of Linear Algebra 1 European Journal of Control 1 Nonlinear Dynamics 1 Sibirskiĭ Zhurnal Industrial’noĭ Matematiki 1 Discrete Dynamics in Nature and Society 1 Far East Journal of Mathematical Sciences 1 Journal of Zhejiang University. Science 1 Journal of Systems Science and Complexity 1 Journal of Algebra and its Applications 1 Journal of Control Theory and Applications 1 Nonlinear Analysis. Hybrid Systems 1 Groups, Complexity, Cryptology 1 International Journal of Differential Equations 1 Journal of Control Science and Engineering 1 Cryptography and Communications 1 Izvestiya Irkutskogo Gosudarstvennogo Universiteta. Seriya Matematika
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#### Cited in 23 Fields

 162 Systems theory; control (93-XX) 17 Ordinary differential equations (34-XX) 17 Information and communication theory, circuits (94-XX) 14 Linear and multilinear algebra; matrix theory (15-XX) 13 Functions of a complex variable (30-XX) 11 Number theory (11-XX) 10 Probability theory and stochastic processes (60-XX) 9 Numerical analysis (65-XX) 6 Field theory and polynomials (12-XX) 5 Calculus of variations and optimal control; optimization (49-XX) 5 Operations research, mathematical programming (90-XX) 3 Real functions (26-XX) 3 Computer science (68-XX) 2 Commutative algebra (13-XX) 2 Dynamical systems and ergodic theory (37-XX) 2 Operator theory (47-XX) 2 Convex and discrete geometry (52-XX) 1 Combinatorics (05-XX) 1 Algebraic geometry (14-XX) 1 Special functions (33-XX) 1 Quantum theory (81-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX)