# zbMATH — the first resource for mathematics

## Chukwu, Ethelbert Nwakuche

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 Author ID: chukwu.ethelbert-nwakuche Published as: Chukwu, E. N.; Chukwu, Ethelberg N.; Chukwu, Ethelbert N.; Chukwu, Ethelbert Nwakuche
 Documents Indexed: 73 Publications since 1972, including 7 Books Reviewing Activity: 21 Reviews
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#### Co-Authors

 61 single-authored 3 Gronski, Jan M. 2 Hájek, Otomar 2 Silliman, Sherwood D. 2 Simpson, Henry C. 2 Underwood, Robert G. 1 Kovari, Louis D. 1 Lenhart, Suzanne M. 1 Smoczynski, Piotr
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#### Serials

 8 Journal of Mathematical Analysis and Applications 7 Applied Mathematics and Computation 7 Journal of Optimization Theory and Applications 6 Nonlinear Analysis. Theory, Methods & Applications 3 Annali di Matematica Pura ed Applicata. Serie Quarta 2 IEEE Transactions on Automatic Control 2 Nigerian Journal of Science. Published for the Science Association of Nigeria 2 SIAM Journal on Mathematical Analysis 2 Nonlinear Analysis. Real World Applications 2 SIAM Journal on Control 2 Mathematics in Science and Engineering 2 Series on Advances in Mathematics for Applied Sciences 2 Atlantis Studies in Mathematics for Engineering and Science 1 Computers & Mathematics with Applications 1 Indian Journal of Pure & Applied Mathematics 1 Journal of the Australian Mathematical Society, Series B 1 International Journal of Mathematics and Mathematical Sciences 1 Journal of Differential Equations 1 Journal of the London Mathematical Society. Second Series 1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 1 Portugaliae Mathematica 1 Journal of the Nigerian Mathematical Society 1 Japan Journal of Industrial and Applied Mathematics 1 Atti della Accademia Nazionale dei Lincei. Serie Ottava. Rendiconti. Classe di Scienze Fisiche, Matematiche e Naturali 1 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 1 Bollettino della Unione Matemàtica Italiana. Supplemento 1 Dynamics of Continuous, Discrete and Impulsive Systems
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#### Fields

 43 Systems theory; control (93-XX) 35 Ordinary differential equations (34-XX) 23 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 12 Calculus of variations and optimal control; optimization (49-XX) 3 Functional analysis (46-XX) 2 Integral equations (45-XX) 1 Approximations and expansions (41-XX) 1 Operator theory (47-XX) 1 Global analysis, analysis on manifolds (58-XX) 1 Statistics (62-XX) 1 Biology and other natural sciences (92-XX)

#### Citations contained in zbMATH

58 Publications have been cited 311 times in 185 Documents Cited by Year
Controllability questions for nonlinear systems in abstract spaces. Zbl 0697.49040
Chukwu, E. N.; Lenhart, S. M.
1991
Stability and time-optimal control of hereditary systems. Zbl 0751.93067
Chukwu, Ethelbert Nwakuche
1992
Mathematical controllability theory of capital growth of nations. Zbl 0784.90015
Chukwu, E. N.
1992
Differential models and neutral systems for controlling the wealth of nations. Zbl 0970.91056
Chukwu, E. N.
2001
Null controllability in function space of nonlinear retarded systems with limited control. Zbl 0555.93008
Chukwu, E. N.
1984
On the null-controllability of nonlinear delay systems with restrained controls. Zbl 0446.93015
Chukwu, Ethelbert N.
1980
On the boundedness of solutions of third order differential equations. Zbl 0319.34027
Chukwu, Ethelbert Nwakuche
1975
Euclidean controllability of linear delay systems with limited controls. Zbl 0418.93009
Chukwu, Ethelbert Nwakuche
1979
On the boundedness and stability of solutions of some differential equations of the fifth order. Zbl 0346.34038
Chukwu, E. N.
1976
Functional inclusion and controllability of nonlinear neutral functional differential systems. Zbl 0416.93026
Chukwu, E. N.
1979
Complete controllability to a closed target set. Zbl 0332.93016
Chukwu, E. N.; Silliman, S. D.
1977
The time optimal control problem of linear neutral functional systems. Zbl 0535.49013
Chukwu, Ethelbert N.
1982
Controllability of delay systems with restrained controls. Zbl 0387.93009
Chukwu, E. N.
1979
On the boundedness and the existence of a periodic solution of some nonlinear third order delay differential equation. Zbl 0424.34071
Chukwu, Ethelberg N.
1978
Nonlinear delay systems controllability. Zbl 0752.93010
Chukwu, E. N.
1991
The time control theory of linear differential equations of neutral type. Zbl 0671.49005
Chukwu, E. N.
1988
Global null controllability of nonlinear delay equations with controls in a compact set. Zbl 0594.93014
Chukwu, E. N.
1987
Stability and time-optimal control of hereditary systems. With application to the economic dynamics of the US. 2nd ed. Zbl 1008.93003
Chukwu, E. N.
2001
Global behaviour of retarded functional differential equations. Zbl 0721.34086
Chukwu, E. N.
1989
Null controllability of nonlinear neutral differential equations. Zbl 0639.93011
Underwood, Robert G.; Chukwu, E. N.
1988
Total controllability to affine manifolds of control systems. Zbl 0504.93012
Chukwu, E. N.
1984
Approximate and complete controllability of nonlinear systems to a convex target set. Zbl 0404.93011
Chukwu, Ethelbert N.; Gronski, Jan M.
1977
On the boundedness and stability properties of solutions of some differential equations of the fifth order. Zbl 0341.34038
Chukwu, E. N.
1975
Optimal control of the growth of wealth of nations. Zbl 1098.91001
Chukwu, E. N.
2003
Universal laws for the control of global economic growth with nonlinear hereditary dynamics. Zbl 0854.90025
Chukwu, E. N.
1996
Control in $$W_ 2^{(1)}$$ of nonlinear interconnected systems of neutral type. Zbl 0839.93015
Chukwu, E. N.
1995
The time optimal control theory of functional differential equations applicable to mathematical ecology. Zbl 0732.92029
Chukwu, E. N.
1988
On the Euclidean controllability of a neutral system with nonlinear base. Zbl 0614.34067
Chukwu, E. N.
1987
An estimate for the solution of a certain functional differential equation of neutral type. Zbl 0533.34052
Chukwu, E. N.
1982
Global asymptotic behaviour of functional differential equations of the neutral type. Zbl 0482.34053
Chukwu, Ethelbert N.
1981
Capture in linear functional differential games of pursuit. Zbl 0423.90099
Chukwu, E. N.
1979
Finite time controllability of non-linear control processes. Zbl 0274.93006
Chukwu, Ethelbert N.
1975
The omega problem of all members of the United Nations. Zbl 1243.91001
Chukwu, Ethelbert Nwakuche
2010
A mathematical treatment of economic cooperation and competion among nations: with Nigeria, USA, UK, China, and Middle East examples. With CD-ROM. Zbl 1077.91034
Chukwu, Ethelbert Nwakuche
2005
Control of nonlinear delay differential economic systems in $$W_2^{(1)}$$. Zbl 0929.34050
Chukwu, E. N.
1997
Mathematical controllability theory of the growth of wealth of nations. Zbl 0845.90028
Chukwu, E. N.
1996
Control of interconnected nonlinear delay differential equations in $$W_ 2^{(1)}$$. Zbl 0836.34088
Chukwu, E. N.
1995
Optimal control of the growth of income of nations. Zbl 0800.49011
Chukwu, E. N.
1994
Mathematical controllability theory of the growth of wealth of nations. Zbl 0799.90029
Chukwu, Ethelbert N.
1994
Control of global economic growth: Will the center hold? Zbl 0791.90014
Chukwu, E. N.
1993
Global constrained null-controllability of nonlinear neutral systems. Zbl 0770.93005
Chukwu, E. N.; Underwood, Robert G.; Kovari, Louis D.
1992
Perturbations of nonlinear systems of neutral type. Zbl 0688.34044
Chukwu, E. N.; Simpson, H. C.
1989
A neutral functional differential equation of Lurie type. Zbl 0432.34046
Chukwu, E. N.
1980
Disconjugacy and optimal control. Zbl 0418.49017
Chukwu, E. N.; Hajek, O.
1979
Symmetries of autonomous linear control systems. Zbl 0253.93013
Chukwu, Ethelbert Nwakuche
1974
On the stability of a nonhomogeneous differential equation of the fourth order. Zbl 0272.34067
Chukwu, E. N.
1972
Cooperation and competition in modeling the dynamics of gross-domestic products of nations. Zbl 1116.91341
Chukwu, E. N.
2005
International economic models as surveillance for the optimal control of the growth of wealth of nations. Zbl 1046.91090
Chukwu, E. N.
2002
On the controllability of nonlinear economic systems with delay: The Italian example. Zbl 0937.91026
Chukwu, Ethelbert N.
1998
Optimal control of the growth of wealth of nations: With Austria and U. S. A. examples. Zbl 0911.90054
Chukwu, Ethelbert Nwakuche
1997
The solution operator in $$W_ p^{(1)}$$ for systems of neutral type. Zbl 0884.34079
Chukwu, E. N.; Simpson, H. C.
1997
Control of nonlinear delay differential equations in $$W_ 2^{(1)}$$ with economic applications. Zbl 0881.93012
Chukwu, E. N.
1997
Function space null controllability of linear delay systems with limited power. Zbl 0632.93006
Chukwu, E. N.
1987
On the controllability to closed sets of nonlinear and related linear systems. Zbl 0361.93014
Chukwu, Ethelbert Nwakuche
1977
On the controllability of non-linear control process satisfying a third order differential equation. Zbl 0364.93026
Chukwu, E. N.
1976
A connection between optimal control and disconjugacy. Zbl 0337.49001
Chukwu, E. N.; Hajek, O.
1976
On the boundedness of a certain fourth-order differential equation. Zbl 0343.34025
Chukwu, E. N.
1975
On the reachable sets of non-autonomous linear control systems. Zbl 0321.93017
Chukwu, Ethelbert N.
1975
The omega problem of all members of the United Nations. Zbl 1243.91001
Chukwu, Ethelbert Nwakuche
2010
A mathematical treatment of economic cooperation and competion among nations: with Nigeria, USA, UK, China, and Middle East examples. With CD-ROM. Zbl 1077.91034
Chukwu, Ethelbert Nwakuche
2005
Cooperation and competition in modeling the dynamics of gross-domestic products of nations. Zbl 1116.91341
Chukwu, E. N.
2005
Optimal control of the growth of wealth of nations. Zbl 1098.91001
Chukwu, E. N.
2003
International economic models as surveillance for the optimal control of the growth of wealth of nations. Zbl 1046.91090
Chukwu, E. N.
2002
Differential models and neutral systems for controlling the wealth of nations. Zbl 0970.91056
Chukwu, E. N.
2001
Stability and time-optimal control of hereditary systems. With application to the economic dynamics of the US. 2nd ed. Zbl 1008.93003
Chukwu, E. N.
2001
On the controllability of nonlinear economic systems with delay: The Italian example. Zbl 0937.91026
Chukwu, Ethelbert N.
1998
Control of nonlinear delay differential economic systems in $$W_2^{(1)}$$. Zbl 0929.34050
Chukwu, E. N.
1997
Optimal control of the growth of wealth of nations: With Austria and U. S. A. examples. Zbl 0911.90054
Chukwu, Ethelbert Nwakuche
1997
The solution operator in $$W_ p^{(1)}$$ for systems of neutral type. Zbl 0884.34079
Chukwu, E. N.; Simpson, H. C.
1997
Control of nonlinear delay differential equations in $$W_ 2^{(1)}$$ with economic applications. Zbl 0881.93012
Chukwu, E. N.
1997
Universal laws for the control of global economic growth with nonlinear hereditary dynamics. Zbl 0854.90025
Chukwu, E. N.
1996
Mathematical controllability theory of the growth of wealth of nations. Zbl 0845.90028
Chukwu, E. N.
1996
Control in $$W_ 2^{(1)}$$ of nonlinear interconnected systems of neutral type. Zbl 0839.93015
Chukwu, E. N.
1995
Control of interconnected nonlinear delay differential equations in $$W_ 2^{(1)}$$. Zbl 0836.34088
Chukwu, E. N.
1995
Optimal control of the growth of income of nations. Zbl 0800.49011
Chukwu, E. N.
1994
Mathematical controllability theory of the growth of wealth of nations. Zbl 0799.90029
Chukwu, Ethelbert N.
1994
Control of global economic growth: Will the center hold? Zbl 0791.90014
Chukwu, E. N.
1993
Stability and time-optimal control of hereditary systems. Zbl 0751.93067
Chukwu, Ethelbert Nwakuche
1992
Mathematical controllability theory of capital growth of nations. Zbl 0784.90015
Chukwu, E. N.
1992
Global constrained null-controllability of nonlinear neutral systems. Zbl 0770.93005
Chukwu, E. N.; Underwood, Robert G.; Kovari, Louis D.
1992
Controllability questions for nonlinear systems in abstract spaces. Zbl 0697.49040
Chukwu, E. N.; Lenhart, S. M.
1991
Nonlinear delay systems controllability. Zbl 0752.93010
Chukwu, E. N.
1991
Global behaviour of retarded functional differential equations. Zbl 0721.34086
Chukwu, E. N.
1989
Perturbations of nonlinear systems of neutral type. Zbl 0688.34044
Chukwu, E. N.; Simpson, H. C.
1989
The time control theory of linear differential equations of neutral type. Zbl 0671.49005
Chukwu, E. N.
1988
Null controllability of nonlinear neutral differential equations. Zbl 0639.93011
Underwood, Robert G.; Chukwu, E. N.
1988
The time optimal control theory of functional differential equations applicable to mathematical ecology. Zbl 0732.92029
Chukwu, E. N.
1988
Global null controllability of nonlinear delay equations with controls in a compact set. Zbl 0594.93014
Chukwu, E. N.
1987
On the Euclidean controllability of a neutral system with nonlinear base. Zbl 0614.34067
Chukwu, E. N.
1987
Function space null controllability of linear delay systems with limited power. Zbl 0632.93006
Chukwu, E. N.
1987
Null controllability in function space of nonlinear retarded systems with limited control. Zbl 0555.93008
Chukwu, E. N.
1984
Total controllability to affine manifolds of control systems. Zbl 0504.93012
Chukwu, E. N.
1984
The time optimal control problem of linear neutral functional systems. Zbl 0535.49013
Chukwu, Ethelbert N.
1982
An estimate for the solution of a certain functional differential equation of neutral type. Zbl 0533.34052
Chukwu, E. N.
1982
Global asymptotic behaviour of functional differential equations of the neutral type. Zbl 0482.34053
Chukwu, Ethelbert N.
1981
On the null-controllability of nonlinear delay systems with restrained controls. Zbl 0446.93015
Chukwu, Ethelbert N.
1980
A neutral functional differential equation of Lurie type. Zbl 0432.34046
Chukwu, E. N.
1980
Euclidean controllability of linear delay systems with limited controls. Zbl 0418.93009
Chukwu, Ethelbert Nwakuche
1979
Functional inclusion and controllability of nonlinear neutral functional differential systems. Zbl 0416.93026
Chukwu, E. N.
1979
Controllability of delay systems with restrained controls. Zbl 0387.93009
Chukwu, E. N.
1979
Capture in linear functional differential games of pursuit. Zbl 0423.90099
Chukwu, E. N.
1979
Disconjugacy and optimal control. Zbl 0418.49017
Chukwu, E. N.; Hajek, O.
1979
On the boundedness and the existence of a periodic solution of some nonlinear third order delay differential equation. Zbl 0424.34071
Chukwu, Ethelberg N.
1978
Complete controllability to a closed target set. Zbl 0332.93016
Chukwu, E. N.; Silliman, S. D.
1977
Approximate and complete controllability of nonlinear systems to a convex target set. Zbl 0404.93011
Chukwu, Ethelbert N.; Gronski, Jan M.
1977
On the controllability to closed sets of nonlinear and related linear systems. Zbl 0361.93014
Chukwu, Ethelbert Nwakuche
1977
On the boundedness and stability of solutions of some differential equations of the fifth order. Zbl 0346.34038
Chukwu, E. N.
1976
On the controllability of non-linear control process satisfying a third order differential equation. Zbl 0364.93026
Chukwu, E. N.
1976
A connection between optimal control and disconjugacy. Zbl 0337.49001
Chukwu, E. N.; Hajek, O.
1976
On the boundedness of solutions of third order differential equations. Zbl 0319.34027
Chukwu, Ethelbert Nwakuche
1975
On the boundedness and stability properties of solutions of some differential equations of the fifth order. Zbl 0341.34038
Chukwu, E. N.
1975
Finite time controllability of non-linear control processes. Zbl 0274.93006
Chukwu, Ethelbert N.
1975
On the boundedness of a certain fourth-order differential equation. Zbl 0343.34025
Chukwu, E. N.
1975
On the reachable sets of non-autonomous linear control systems. Zbl 0321.93017
Chukwu, Ethelbert N.
1975
Symmetries of autonomous linear control systems. Zbl 0253.93013
Chukwu, Ethelbert Nwakuche
1974
On the stability of a nonhomogeneous differential equation of the fourth order. Zbl 0272.34067
Chukwu, E. N.
1972
all top 5

#### Cited by 194 Authors

 23 Journal of Optimization Theory and Applications 18 Journal of Mathematical Analysis and Applications 16 Applied Mathematics and Computation 8 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 7 Computers & Mathematics with Applications 6 International Journal of Control 5 Chaos, Solitons and Fractals 5 Applied Mathematics Letters 5 Nonlinear Analysis. Theory, Methods & Applications 4 Kybernetika 4 Systems & Control Letters 3 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica 3 Optimization 3 Mathematical and Computer Modelling 3 Nonlinear Analysis. Real World Applications 3 Advances in Difference Equations 2 Bulletin of the Australian Mathematical Society 2 International Journal of Systems Science 2 Applied Mathematics and Mechanics. (English Edition) 2 Stochastic Analysis and Applications 2 Acta Mathematicae Applicatae Sinica. English Series 2 Journal of Difference Equations and Applications 2 Nonlinear Dynamics 2 Abstract and Applied Analysis 2 International Journal of Applied Mathematics and Computer Science 2 Journal of Dynamical and Control Systems 2 International Journal of Differential Equations 2 Afrika Matematika 2 Journal of Applied Analysis and Computation 1 Applicable Analysis 1 Journal of the Franklin Institute 1 Mathematical Biosciences 1 Mathematical Methods in the Applied Sciences 1 Applied Mathematics and Optimization 1 Automatica 1 Information Sciences 1 Journal of Computational and Applied Mathematics 1 Journal of Soviet Mathematics 1 Le Matematiche 1 Operations Research 1 Proceedings of the Japan Academy. Series A 1 Chinese Annals of Mathematics. Series B 1 Journal of Integral Equations and Applications 1 Japan Journal of Industrial and Applied Mathematics 1 M$$^3$$AS. Mathematical Models & Methods in Applied Sciences 1 Applied Mathematical Modelling 1 Glasnik Matematički. Serija III 1 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 1 Analele Ştiinţifice ale Universităţii Al. I. Cuza din Iaşi. Serie Nouă. Matematică 1 Journal of Mathematical Sciences (New York) 1 Discrete and Continuous Dynamical Systems 1 Mathematical Problems in Engineering 1 European Journal of Control 1 Journal of Vibration and Control 1 Differential Equations and Dynamical Systems 1 Vietnam Journal of Mathematics 1 Journal of Inequalities and Applications 1 Fractional Calculus & Applied Analysis 1 Communications in Nonlinear Science and Numerical Simulation 1 The ANZIAM Journal 1 Differential Equations 1 Differentsial’nye Uravneniya i Protsessy Upravleniya 1 Journal of Applied Mathematics 1 Journal of Applied Mathematics and Computing 1 Fixed Point Theory and Applications 1 Journal of Control Theory and Applications 1 Journal of Biological Dynamics 1 Nonlinear Oscillations 1 Journal of Fixed Point Theory and Applications 1 European Journal of Pure and Applied Mathematics 1 Acta Universitatis Sapientiae. Mathematica 1 Mathematics