### Vu Ngoc Phat

Full Professor, Doctor of Science
Department of Optimization and Control Theory
Stability and Control of Dynamical Systems with time-varying delays |

**Address**

Office: Building A6, Room 504

Tel: +84 (024) 38361121 / 504

Email: vnphat AT math.ac.vn

**Education and academic degrees**

- B.Sc: 1975, Azerbaijan State University, former USSR
- Ph.D: 1984, Azerbaijan State University, former USSR
- Dr.Sc: 1995, Institute of Mathematics, Polish Academy of Sciences, Warsaw, Poland
- Associate professor: 1992
- Full professor: 2001

Hiệp hội tham gia:

- American Mathematical Society (AMS)
- Society for Industrial and Applied Mathematíc (SIAM)
- World Scientific and Engineering Society (WSES)
- Mathematical Review (MR)
- Steering Technical Committee of Nonlinear Control Theory (IFAC).

*Thành viên ban biên tập tạp chí toán học:*

- Optimization, 1998-2002
- Journal of Applied Mathematics, 2010 – 2015
- Mathematical Problems in Engineering, 2011-2014
- Nonlinear Functional Analysis and Applications, 1999 - 2015
- Advances in Nonlinear Variational Inequalities, 2003 -
- Acta Mathematica Vietnamica, 2008 -
- Vietnam Journal of Mathematics, 2011-
- Thai Journal of Mathematics, 2006 -

* Research areas:* Control theory, stability analysis, optimization, ems, time-delay systems.

#### PUBLICATIONS

*List of publications in MathSciNet*

* *

*List of recent publications*1 | Vu Ngoc Phat, N.T. Thanh, New criteria for finite-time stability of nonlinear fractional-order delay systems: A Gronwall inequality approach. Appllied Mathematics Letters, 83 (2018), pp. 169-175. |

2 | Nguyen Huu Sau, Vu Ngoc Phat, LP approach to exponential stabilization of singular positive time-delay systems via memory state feedback, Journal of Industrial and Management Optimization, 14 (2018), 583-596. |

3 | Phan Thanh Nam, Hieu Trinh, Pubudu Nishantha Pathirana, Vu Ngoc Phat, Stability analysis of nonlinear time-delay systems using a novel switched positive systems method, IEEE Transactions on Automatic Control, 63 (2018), 291-297. |

4 | Nguyen Huyen Muoi, Vu Ngoc Phat, P. Niamsup, Criteria for robust finite-time stabilization of linear singular systems with interval time-varying delay, IET Control Theory and Applications, 11 (2017), 1968 - 1975. |

5 | N.T. Thanh, P. Niamsup, Vu Ngoc Phat, Finite-time stability of singular nonlinear switched time-delay systems: A singular value decomposition approach, Journal of the Franklin Institute, 354 (2017), 3502-3518. |

6 | N.T. Thanh, H. Trinh, Vu Ngoc Phat, Stability analysis of fractional differential time-delay equations, IET Control Theory and Applications, 11 (2017), 1006-1015. |

7 | P. Niamsup, N.T. Thanh, Vu Ngoc Phat, Robust finite-time stabilization of nonlinear systems with multiple delays in states and controls, Communications on Applied Nonlinear Analysis, 23 (2016), 1-13 . |

8 | Nguyen Huyen Muoi, G. Rajchakit, Vu Ngoc Phat, LMI approach to finite-time stability and stabilization of singular discrete delay systems, Acta Applicandae Mathematicae, 146(2016), 81-93. |

9 | P.Niamsup, Vu Ngoc Phat, Robust finite-time control for linear time-varying delay systems with bounded control, Asian Jounal of Control, 18 (2016), 2317-2324. |

10 | Vu Ngoc Phat, N.T. Thanh, H. Trinh, New results on $H_\infty$ filtering for nonlinear large-scale systems with interconnected time-varying delays, Optimal Control Applications and Methods, 37 (2016), 958-964. |

11 | Nguyen H.Sau, P.Niamsup, Vu Ngoc Phat, Positivity and stability analysis for linear implicit difference delay equations, Linear Algebra and its Applications, 510 (2016), 25–41. |

12 | Le A. Tuan, Vu Ngoc Phat, Robust finite-time stability and $H_\infty$ control of linear discrete-time delay systems with norm-bounded disturbances, Acta Mathematica Vietnamica, 41 (2016),481-493. |

13 | Adly Samir, Tạ Thị Huyền Trang, Vu Ngoc Phat, Guaranteed quadratic cost control of nonlinear time-varying delay systems via output feedback stabilization, Pacific Journal of Optimization, 12 (2016), 2016, 649-667. |

14 | P. T. Nam, Vu Ngoc Phat, P. N. Pathirana, H. Trinh, Stability analysis of a general family of nonlinear positive discrete time-delay systems, International Journal of Control, 89 (2016), 1303-1315. |

15 | P. Niamsup, Vu Ngoc Phat, A new result on finite-time control of singular linear time-delay systems, Applied Mathematics Letters, 60 (2016), 1-7. |

16 | Tạ Thị Huyền Trang, Vu Ngoc Phat, Adly Samir, Finite-time stabilization and H∞ control of nonlinear delay systems via output feedback. Journal of Industrial and Management Optimization 12 (2016), 303–315. |

17 | Vu Ngoc Phat, Nguyen T. Thanh, H. Trinh, Full-order observer design for nonlinear complex large-scale systems with unknown time-varying delayed interactions. Complexity, 21 (2015), 123-133. |

18 | Le Van Hien, Vu Ngoc Phat, H. Trinh, New generalized Halanay inequalities with applications to stability of nonlinear non-autonomous time-delay systems. Nonlinear Dynamics, 82 (2015), 563-575. |

19 | Vu Ngoc Phat, Nguyen Huyen Muoi, M.V. Bulatov, Robust finite-time stability of linear differential-algebraic delay equations, Linear Algebra and its Applications, 487 (2015), 146-157. |

20 | Piyapong Niamsup, K. Ratchagit, Vu Ngoc Phat, Novel criteria for finite-time stabilization and guaranteed cost control of delayed neural networks, Neurocomputing, 160 (2015), 281-286. |

21 | Piyapong Niamsup, Vu Ngoc Phat, State Feedback Guaranteed Cost Controller for Nonlinear Time-Varying Delay Systems, Vietnam Journal of Mathematics, 43 (2015), 215-228. |

22 | Le Van Hien, Le Huy Vu, Vu Ngoc Phat, Improved delay-dependent exponential stability of singular systems with mixed interval time-varying delays, IET Control Theory & Applications, 9 (2015), 1364 - 1372. |

23 | Vu Ngoc Phat, P. Niamsup, Global stabilization of linear time-varying delay systems with bounded controls. Applied Mathematics Letters, 46 (2015), 11-16. |

24 | M.V. Thuan, Vu Ngoc Phat, T.L. Fernando, H. Trinh, Exponential stabilization of time-varying delay systems with nonlinear perturbations, IMA Journal of Mathematical Control and Information, 31 ( 2014), 441-464. |

25 | M.V. Bulatov, M.N. Machkhina, Vu Ngoc Phat, Existence and uniqueness of solutions to integral-algebraic equations with variable limits of integrations, Communications on Applied Nonlinear Anaysis, 21(2014), 65-76. |

26 | Mai Viet Thuan, Le Van Hien, Vu Ngoc Phat, Exponential stabilization of non-autonomous delayed neural networks via Riccati equations, Applied Mathematics and Computation, 246(2014), 533-545. |

27 | Vu Ngoc Phat, Nguyen Huu Sau, On exponential stability of linear singular positive delayed systems, Applied Mathematics Letters, 38 (2014), 67–72. |

28 | Vu Ngoc Phat, T. Fernando, H. Trinh, Observer-based control for time-varying delay neural networks with nonlinear observation, Neural Computing and Applications, Vol. 24, 2014, 1639-1645. |

29 | Nguyen Truong Thanh, Vu Ngoc Phat, Decentralized stability for switched nonlinear large-scale systems with interval time-varying delays in interconnections, Nonlinear Analysis: Hybrid Systems, 11 (2014), 21-36. |

30 | Le A. Tuan, Phan T. Nam, Vu Ngoc Phat, $H_\infty$ controller design for neural networks with mixed interval time-varying delays, Neural Processing Letters, 37(2013), 235-249. |

31 | Vu Ngoc Phat, H. Trinh, Design of $H_\infty $ control of neural networks with time-varying delys, Neural Comput. and Applic., 22 (2013), 323 - 331. |

32 | Vu Ngoc Phat, $H_\infty$ control for nonlinear systems with interval non-differentiable time-varying delay, European Journal of Control, 19 (2013), 190 - 198. |

33 | Vu Ngoc Phat, T. L. Fernando and H. M. Trinh, Output feedback guaranteed cost control of uncertain linear discrete systems with interval time-varying delays, Applied Mathematical Modelling, 37 (2013), 1580 - 158. |

34 | Vu Ngoc Phat, M. V. Thuan, New criteria for stability and stabilization of neural networks with mixed time-varying delays, Vietnam Journal of Mathematics, 40 (2012), 79-93. |

35 | Vu Ngoc Phat, M. V. Thuan and H. M. Trinh, Dynamic output feedback guaranteed cost control of linear systems with time-varying delays in states and outputs, Applied Mathematics and Computation, 218 (2012), 10697–10707. |

36 | Vu Ngoc Phat, T. L. Fernando and H. M. Trinh, Decentralized stabilization of large-scale systems with time-varying delays in interconnections, International Journal of Adaptive Control and Signal Processing, 26 (2012), 541 -- 554. |

37 | Vu Ngoc Phat, L. V. Hien, New exponential estimate for robust stability of nonlinear neutral time delay systems with convex polytopic uncertainties, Journal Nonlinear and Convex Analysis, 12 (2012), 541 -- 553. |

38 | Vu Ngoc Phat, Nguyen T. Thanh, Decentralized $H_infty$ control for large-scale interconnected nonlinear time-delay systems via LMI approach, Journal of Process Control, 22 (2012), 1325 -- 1339. |

39 | Vu Ngoc Phat, K. Ratchagit and Y. Khongtham, LMI approach to exponential stability of linear systems with interval time-varying delays, Linear Algebra and its Applications, 336 (2012), Pp. 243–251. |

40 | Vu Ngoc Phat, M. V. Thuan, Optimal guaranteed cost control of linear systems with mixed time-varying delayed state and control, Journal of Optimization Theory and Applications, 125 (2012), 394 -- 412. |

41 | Vu Ngoc Phat, Mai Viet Thuan and Hieu Trinh, Observer-based controller design of time-delay systems with an interval time-varying delay, Int. J. Appl. Math. Comput. Sci., 22 (2012), 921 -- 927. |

42 | Vu Ngoc Phat, K. Ratchagit, Stability and stabilization of switched linear discrete-time systems with interval time-varying delay, Nonlinear Analysis: Hybrid Systems 5 (2011), 605 - 612. |

43 | Vu Ngoc Phat, T. Botmart and P. Niamsup, Delay-dependent exponential stabilization for uncertain linear systems with interval non-differentiable time-varying delays, Applied Mathematics and Computation 217 (2011), 8236 - 8247. |

44 | Vu Ngoc Phat, N. S. Bay and N. M. Lin, Robust $H_\infty $ control of linear time-varying systems with mixed delays in the Hilbert space, Optim. Control Appl. Meth. 32 (2011), 545 -557. |

45 | Vu Ngoc Phat, T. T. Anh and L. V. Hien, Stability analysis for linear non-autonomous systems with mixed multiple time-varying delays and applications, Acta Math. Vietnamica 36 (2011), 129 -- 143. |

46 | Vu Ngoc Phat, P. Niamsup, A novel exponential stability condition of hybrid neural networks with time-varying delay, Vietnam Journal of Math. 38 (2010), 341 - 351. |

47 | Vu Ngoc Phat, L. V. Hien, Robust stabilization of linear polytopic control systems with mixed delays, Acta Math. Vietnamica 35 (2010), 427 - 438. |

48 | Vu Ngoc Phat, V. Jeyakumar, Stability, stabilization and duality for linear time-varying systems, Optimization, 59 (2010), 447 -- 460. |

49 | Vu Ngoc Phat, P. T. Nam and H. M. Hien, Asymptotic stability of linear state-delayed neutral systems with polytope type uncertainties, Dynamic Systems and Applications 19 (2010), 63 -- 74. |

50 | Vu Ngoc Phat, Switched controller design for stabilization of nonlinear hybrid systems with time-varying delays in state and control, J. of the Franklin Institute, 347 (2010), 195 -- 207. |

51 | Vu Ngoc Phat, Q. P. Ha and H. Trinh, Parameter-dependent $H_\infty$ control for linear time delay polytopic systems, J. Optim. Theory Appl, 147 (2010), 58 -- 70. |

52 | Vu Ngoc Phat, $H_\infty$ control for nonlinear time-varying delay systems with polytopic type uncertainties,Nonlinear Analysis: Theory, Methods and Applications, 72 (2010), 4254 -- 4263. |

53 | Vu Ngoc Phat, P. T. Nam, Exponential stability delayed Hopfield neural networks with various activation functions and polytopic uncertainties,Physics Letters A, 374 (2010), 2527 -- 2533. |

54 | Vu Ngoc Phat, H. Trinh, Exponential stabilization of neural networks with various activation functions and mixed time-varying delays, IEEE Trans. Neural Networks, 21 (2010), 1180 -- 1185. |

55 | Vu Ngoc Phat, T. Bormat and P. Niamsup, Switching design for exponential stability of a class of nonlinear hybrid time-delay systems, Nonlinear Analysis: Hybrid Systems, 3 (2009), 1- 10. |

56 | L.V. Hien, Vu Ngoc Phat, Exponential stabilization for a class of hybrid systems with mixed delays in state and control, Nonlinear Analysis: Hybrid Systems, 3 (2009), 259- 265. |

57 | P. Niamsup, Vu Ngoc Phat, $H_\infty $ optimal control of LTV systems with time-varying delay via controllability approach, ScienceAsia, 35 (2009), 284-289. |

58 | L.V. Hien, Vu Ngoc Phat, Delay feedback control in exponential stabilization of linear time-varying systems with input delay, IMA J. Math. Contr. Inform., 26 (2009), 163-177. |

59 | L.V.Hien, Vu Ngoc Phat, Exponential stability and stabilization of a class of uncertain linear time-delay systems, J. of the Franklin Institute, 346 (2009), 611-625. |

60 | L.V. Hien, Q.P. Ha, Vu Ngoc Phat, Stability and stabilization of switched linear dynamic systems with time delay and uncertainties, Appl. Math. Computation, 210 (2009), 223-231. |

61 | P.T. Nam, Vu Ngoc Phat, Robust stabilization of linear systems with delayed state and control, J. Optim. Theory Appl., 140 (2009), 287-299. |

62 | P.T. Nam, Vu Ngoc Phat, An improved stability criterion for a class of neutral differential equations, Appl. Math. Letters, 22 (2009), 31-35. |

63 | Vu Ngoc Phat, Q.P. Ha, $H_\infty$ control and exponential stability for a class of nonlinear non-autonomous systems with time-varying delay, J. Optim. Theory Appl., 142, (2009), 603-618. |

64 | Vu Ngoc Phat, L.V. Hien, An application of Razumikhin theorem to exponential stability for linear non-autonomous systems with arbitrary time-varying delays, Appl. Math. Letters, 22 (2009), 1412-1417. |

65 | Vu Ngoc Phat, Memoryless $H_\infty$ controller design for switched nonlinear systems with mixed time-varying delays, Int. J. of Control, 82 (2009), 1889-1898. |

66 | Vu Ngoc Phat, P. Niamsup, Stability analysis for a class of functional differential equations and applications,Nonlinear Anal.: Theory, Methods \& Applications, 71 (2009), 6265 -- 6275. |

67 | P. Niamsup, K. Mukdasai, Vu Ngoc Phat, Linear uncertain non-autonomous time-delay systems: stability and stabilizability via Riccati equations, Electron, J. Differential Equations 2008, 10 pp. |

68 | Phan Than Nam, Vu Ngoc Phat, Robust exponential stability and stabilization of linear uncertain polytopic time-delay systems, J. Control Theory Appl. 6 (2008), 163 - 170. |

69 | Vu Ngoc Phat, D. Q. Vinh and N. S. Bay, $L_2$-stabilization and $H_\infty$ control for linear non-autonomous time-delay systems in Hilbert spaces via Riccati equations, Adv. Nonlinear Var. Inequal. 11 (2008), 75 - 86. |

70 | P. Niamsup, K. Mukdasai, Vu Ngoc Phat, Improved exponential stability for time-varying systems with nonlinear delayed perturbations, Appl. Math. Computation, 204 (2008), 490-495. |

71 | Vu Ngoc Phat, Q.P. Ha, New characterization of stabilizability via Riccati equations for LTV systems, IMA J. Math.Contr. Inform., 25 (2008), 419-429. |

72 | Vu Ngoc Phat, Phan Thanh Nam, Exponential stability and stabilization of uncertain linear time-varying systems using parameter dependent Lyapunov function, Internat. J. Control 80 (2007), N0 8, 1333 - 1341. |

73 | Vu Ngoc Phat, Dao Quang Vinh, Controllability and $H_\infty$ control for linear continuous time-varying uncertain systems. Differential equations and applications, 4 (2007), 105 - 111. |

74 | Vu Ngoc Phat, S. Pairote, Exponential stability of switched linear systems with time-varying delay, Electron. J. Differential Equations 2007, 10 pp. |

75 | Vu Ngoc Phat, Global stabilization for linear continuous time-varying systems, Appl. Math. Comput. 175 (2006), 1730 - 1743. |

76 | Vu Ngoc Phat, Satiracoo Pairote, Global stabilization of linear periodically time-varying switched systems via matrix inequalities, J. Control Theory Appl. 4 (2006), 26 - 31. |

77 | Vu Ngoc Phat, Piyapong Niamsup, Stability of linear time-varying delay systems and applications to control problems, J. Comput. Appl. Math. 194 (2006), 343 - 356. |

78 | Vu Ngoc Phat, Sufficient conditions for stabilizability of linear periodic differential equations, Southeast Asian Bull. Math. 30 (2006), 331 - 340. |

79 | Vu Ngoc Phat, P. Niamsup, Stabilization of linear nonautonomous systems with norm-bounded controls, J. Optim. Theory Appl. 131 (2006), 135 - 149. |

80 | Vu Ngoc Phat, Phan Thanh Nam, Exponential stability criteria of linear non-autonomous systems with multiple delays, Electron. J. Differential Equations 2005, N0 58, 8 pp. |

81 | Vu Ngoc Phat, A. V. Savkin, Robust set-valued state estimation for linear time-varying systems in Hilbert spaces, Nonlinear Funct. Anal. Appl. 10 (2005), 285 - 298. |

82 | Vu Ngoc Phat, A. V. Savkin, Robust set-valued state estimation for linear time-varying systems in Hilbert spaces, Nonlinear Funct. Anal. Appl. 10 (2005), 285 - 298. |

83 | Vu Ngoc Phat, J. Jiang, Stabilization of nonlinear discrete-time systems via a digital communication channel. Int. J. Math. Math. Sc. 1 (2005), 43 - 56. |

84 | Vu Ngoc Phat, Robust stability and stabilizability of uncertain linear hybrid systems with state delays, IEEE Trans. on CAS II 52 (2004), 894 - 898. |

85 | Vu Ngoc Phat, D. Q. Vinh, Controllability and H-infinity control of linear continuous time-varying uncertain systems. Diff. Equations and Appl. 4 (2004), 313 - 327. |

86 | Vu Ngoc Phat, Jianming Jiang, Andrey V. Savkin, Ian R. Petersen, Robust stabilization of linear uncertain discrete-time systems via a limited capacity communication channel, Systems Control Letters. 53 (2004), 347 - 360. |

87 | Vu Ngoc Phat, Nonlinear $H_\inf}$ control in Hilbert spaces via Riccati operator equation, Nonlinear Funct. Anal. Appl. 9 (2004), 79 - 92. |

88 | Vu Ngoc Phat, N. M. Linh, On the stabilization of nonlinear continuous-time systems in Hilbert spaces, Southeast Asian Bull. Math. 27 (2003), 135 - 142. |

89 | Nguyen Sinh Bay, Vu Ngoc Phat, Stability analysis of nonlinear retarded difference equations in Banach spaces. Advances in difference equations, IV, Comput. Math. Appl. 45 (2003), 951 - 960. |

90 | Nguyen Sinh Bay, Nguyen The Hoan, Vu Ngoc Phat, On the asymptotic stability of time-varying differential equations with multiple delays and applications, Acta Math. Vietnam. 28 (2003), 51 - 64. |

91 | Vu Ngoc Phat, On the stability of a class of nonlinear time-delay differential control systems in Banach spaces, Diff. Equations and Appl. 3 (2003), 203 - 218. |

92 | Vu Ngoc Phat, Complete stabilization of distributed parameter systems: A controllability analysis approach. In: Proc. 15th Int. IFAC’2002 Congress, July, 2002, Barcelona, 1325 - 1330. |

93 | Vu Ngoc Phat, Andrey V. Savkin, Robust state estimation for a class of uncertain time-delay systems. Systems Control Letters, 47 (2002), 237 - 245. |

94 | Vu Ngoc Phat, New stabilization criteria for linear time-varying systems with state delay and norm-bounded uncertainties. IEEE Trans. Automat. Control 47 (2002), 2095 - 2098. |

95 | Vu Ngoc Phat, Nguyen Sinh Bay, Asymptotic stability of a class of nonlinear functional differential equations, Nonlinear Funct. Anal. Appl. 7 (2002), 299 - 311. |

96 | Vu Ngoc Phat, Nguyen Sinh Bay, Lyapunov stability and stabilizability of linear differential time-varying delay systems in Hilbert spaces, Far East J. Math. Sci. (FJMS) 5 (2002), N0 1, 65 - 80. |

97 | Vu Ngoc Phat, Tran Tin Kiet, On the Lyapunov equation in Banach spaces and applications to control problems, Int. J. Math. Math. Sci. 29 (2002), 155 - 166. |

98 | J. Y. Park, Vu Ngoc Phat, I. H. Jung, Constrained controllability of linear time-varying systems in Banach spaces, Optimization 50 (2001), 187 - 204. |

99 | Vu Ngoc Phat, Stabilization of linear continuous time-varying systems with state delays in Hilbert spaces, Elect. J. Diff. Equations (2001), 1 - 12. |

100 | Nguyen Manh Linh, Vu Ngoc Phat, Exponential stability of nonlinear time-varying differential equations and applications, Elect. J. Diff. Equations (2001), N0 34, 1 - 12. |

101 | Vu Ngoc Phat, T. T. Kiet, Global controllability to a target set of a discrete-time system in Banach spaces. Nonlinear Funct. Anal. Appl. 5 (2000), 23 - 37. |

102 | Jong Yeoul Park, Vu Ngoc Phat, Il Hyo Jung, On stability of nonlinear nonautonomous systems by Lyapunov's direct method. J. Korean Math. Soc. 37 (2000), 805 - 821. |

103 | Vu Ngoc Phat, Constrained controllability theory: from linear to nonlinear dynamical discrete-time systems. East-West J. Math. 2 (2000), 1 - 19. |

104 | Vu Ngoc Phat, J. Y. Park, On the Gronwall inequality and asymptotic stability of nonlinear discrete systems with multiple delays. Dynam. Systems Appl. 9 (2000), 309 - 321. |

105 | Vu Ngoc Phat, Tran Tin Kiet, Lyapunov stability of nonlinear time-varying differential equations, Acta Math. Vietnam. 25 (2000), N0 2, 231 - 249. |

106 | Vu Ngoc Phat, Jong Yeoul Park, and Il Hyo Jung, Constrained controllability of linear time-varying Stability and constrained controllability of linear control systems in Banach spaces. J. Korean Math. Society 37 (2000), 593 - 612. |

107 | P. Niamsup, Vu Ngoc Phat, Asymptotic stability of nonlinear control systems described by differential equations with multiple delays. Elect. J. Diff. Equations 11 (2000), 1 - 17. |

108 | Vu Ngoc Phat, Introduction to mathematical control theory (in Vietnamese) – Nhập môn lý thuyết điều khiển tối ưu. NXB ĐHQG, Hanoi, 2000, 245 trang. |

109 | Vu Ngoc Phat, Tran Tin Kiet, On the stabilizability of nonlinear systems in finite-dimensional spaces. Funct. Anal. Appl. 4 (1999), 73 - 85. |

110 | Vu Ngoc Phat, Krein-Rutman theorem on existence of eigenvectors in Banach spaces : Recent extensions and applications. Nonl. Funct. Anal. Appl. 4 (1999), 25 - 40. |

111 | Nguyen Sinh Bay, Vu Ngoc Phat, Stability of nonlinear discrete time-varying retarded systems. Vietnam J. Math. 27 (1999), 373 - 377. |

112 | Vu Ngoc Phat, On the stability and stabilizability of nonlinear dynamical systems. Nonlinear Anal. Forum. 4 (1999), 65 - 75. |

113 | Vu Ngoc Phat, On the stability of time-varying differential equations. Optimization 45 (1999), 237 - 254. |

114 | Vu Ngoc Phat, J. Y. Park, Asymptotic stability of nonlinear purturbed discrete systems with multiple delays. In: Proc. Inter. Conf. Math. Anal. Appl. Chinju, Korea, 5 (1998), 123 - 137. |

115 | Vu Ngoc Phat, Jong Yeoul Park, Further generalizations of Farkas' theorem and applications in optimal control. J. Math. Anal. Appl. 216 (1997), 23 - 39. |

116 | Vu Ngoc Phat, Weak asymptotic stabilizability of discrete-time inclusions given by set-valued operators. J. Math. Anal. Appl. 202 (1996), 353 - 369. |

117 | Vu Ngoc Phat, Constrained control problems of discrete processes. World Scientific, Singapore-New Jersey-London, 1996, 228p. |

118 | Vu Ngoc Phat, Constrained controllability theory of dynamical systems. Dr. Sc. Thesis, Institute of Mathematics, Polish Academy of Sciences, Warszawa, Poland, 1995. |

119 | Vu Ngoc Phat, Some aspects of constrained controllability of discrete-time dynamical systems. Optimization 33 (1995), 57 - 79. |

120 | Vu Ngoc Phat, Constrained controllability of linear control infinite-dimensional systems: A set-valued analysis approach. IMA J. Math. Contr. Inform. 11 (1994), 185 - 199. |

121 | Vu Ngoc Phat, Constrained controllability and reachability of linear discrete-time descriptor systems. Optimization 31 (1994), 165 - 177. |

122 | Vu Ngoc Phat, Some remarks on controllability and reachability of nonstationary discrete-time processes. Optimization 29 (1994), 173 - 180. |

123 | Vu Ngoc Phat, Trinh Cong Dieu, On the Krein-Rutman theorem and its applications in controllability. Proceedings of AMS 124 (1994), 495 - 501. |

124 | Vu Ngoc Phat, K. Balachandra, On the controllability of linear descriptor systems in Banach spaces. Acta Math. Vietnam. 1 (1992), 67 - 76. |

125 | Vu Ngoc Phat, K. Murugesan, A note on constrained controllability of linear descriptor systems. Optimization 25 (1992), 77 - 82. |

126 | Vu Ngoc Phat, Trinh Cong Dieu, Linear control discrete-time systems with disturbances: Constrained controllability to a subset. Optimization 24 (1992), 319 - 327. |

127 | Vu Ngoc Phat, Trinh Cong Dieu, Constrained controllability of linear discrete-time systems with constrained controls and states in Banach spaces. SIAM J. Contr. and Optim. 30 (1992), 1311 - 1319. |

128 | Vu Ngoc Phat, Controllability problems of dynamical syatems: a set-valued approach. In: Proc. of the 36th Int. Colloquium on Applied Mathematics, Ilmelnau, Germany, October 1991, 121-132. |

129 | Vu Ngoc Phat, Control problems of nonlinear dynamical systems with phase constraints. Inter. Series of Numerical Analysis 99 (1991), 433 - 440. |

130 | Vu Ngoc Phat, Nguyen Khoa Son, Linear nonstationary discrete-time systems: Null controllability with restrained controls in Banach spaces. Optimization. 2 (1990), 271 - 279. |

131 | Vu Ngoc Phat, An application of implicit function theorem in the solution of controllability problems. Kibernetika, USSR, 4 (1990), 55 - 59. English translation: Cybernetics, 27 (1990). |

132 | Vu Ngoc Phat, New results on controllability of linear nonstationary systems with constrained controls and states. In: Proc. of 14th Inter. Conference on Math. Optimization and Applications, Eisenach, FRG, December 11-16, 1989, 92 - 103. |

133 | Vu Ngoc Phat, Controllability of linear discrete-time systems with multiple delays on controls and states. Int. J. Contr. 5 (1989), 1645 - 1654. |

134 | Vu Ngoc Phat, Controllability of linear time-dependent systems with a phase constraint. Avtomatika i Telemekhanika, USSR 8 (1988), 51 - 59. English translation: Automat Remote Control 49 (1988), 998 - 1004. |

135 | Vu Ngoc Phat, Controllability of nonlinear discrete-time systems without differentiability assumption. Optimization 19 (1988), 133 - 142. |

136 | Vu Ngoc Phat, Approximate controllability of nonlinear discrete-time systems in Banach spaces. Acta Math. Vietnam. 13 (1988), 81 - 88. |

137 | Vu Ngoc Phat, R.G. Faradzev and V. A. Shapiro, Controllability theory of dynamical discrete-time systems. Avtomatika i Telemekhanika, USSR 1(1986), English translation: Automat Remote Control 47 (1986), 1 - 23. |

138 | Vu Ngoc Phat, Controllability in multivalued discrete-time processes. Kibernetika, USSR 5(1986), 62-67. English translation: Cybernetics 22 (1986), 610 - 615. |

139 | Vu Ngoc Phat, On the controllability of nonlinear two parameter discrete-time systems with constrained controls. Optimization 16 (1985), 869 - 876. |

140 | Vu Ngoc Phat, Qualitative properties of nonlinear dynamical systems. Ph. D. Thesis, Azerbaizan University, Bacu, USSR 1984 (in Russian). |

141 | Vu Ngoc Phat, Pseudoconvex sets and controllability of discrete-time systems in Banach spaces. Vestnik Kharcov University, USSR 254 (1984), 57 - 61. (in Russian). |

142 | Vu Ngoc Phat, Controllability of nonlinear two-parametric discrete-time systems. Probl. Optim. ASU, Bacu, USSR (1983), 171 - 179 (in Russian). |

143 | Vu Ngoc Phat, Controllability of discrete-time systems with nonconvex restrained controls. Optimization 14 (1983), 371 - 375. |

144 | Vu Ngoc Phat, Controllability problem of general nonlinear processes. Vietnam J. Math. 2 (1981), 27 - 31 (in Vietnamese). |

145 | Vu Ngoc Phat, Controllability of nonlinear dynamical discrete-time systems. Acta Math. Vietnam. 2 (1980), 63 - 74. |

146 | Vu Ngoc Phat, Controllability of pseudolinear dynamical systems. Vietnam J. Math. 2 (1980), 18 - 23 (in Vietnamese). |

### Highlights

25/06/18, Conference: Arithmetic and geometry of local and global fields |

26/07/18, Conference: Một số phương pháp phân tích thống kê hiện đại và Ứng dụng |

14/08/18, Conference: Đại hội Toán học Việt Nam lần thứ 9 |

10/09/18, Conference: The 10th Japan-Vietnam Joint Seminar on Commutative Algebra |

15/09/18, Conference: The 6th Franco-Japanese-Vietnamese Symposium on Singularities |

22/10/18, Conference: The Third Mongolia-Russia-Vietnam Workshop on Numerical Solution of Integral and Differential Equations (NSIDE 2018) |

23/10/18, Conference: ALGEBRAIC GEOMETRY IN EAST ASIA |