Scientific Publications 1990

1. 1. Nguyen Tu Cuong, On the length of the powers of a system of parameters in local rings, Nagoya Mathematical Journal, 120 (1990), 77 - 88.
2. 2. Vu Ngoc Phat, An application of implicit function theorem in the solution of controllability problems, Kibernetika, USSR, 4 (1990), 55 - 59. English translation: Cybernetics {\bf 27} (1990).
3. 3. Nguyen Minh Tri, On the global hypoellipticity of a high order differential operator, Differentsialnye Uravneniya, 26 (1990), N$^o$ 4, 687 - 692 (in Russian). (Translation in Differential Equations 26 (1990), N$^o$ 4, 507 - 510).
4. 4. Nguyen Minh Tri, Fourth-order hypoelliptic pseudodifferental operators with noninvolutive characteristics sets, Vestnik M. S. U. (1990), N$^o$ 2, 71 - 73 (in Russian).
5. 5. Nguyen Minh Tri, Yu. V. Egorova, Maximally hypoelliptic operators with noninvolutive characteristics sets, Doklady Akademii Nauk USSR, 314 (1990), N$^o$ 5, 1059 - 1061 (in Russian). (Translation in Soviet Mathematics - Doklady 42 (1991), N$^o$ 2, 585 - 587).
6. 6. Nguyen Minh Tri, On some classes of pseudo-differential hypoelliptic operators}. Ph. D. Thesis, Lomonosov Moscow State University (1990) (in Russian).
7. 7. Morales Marcel, Ngo Viet Trung, Orlando E. Villamayor, Sur la fonction de Hilbert-Samuel des clôtures intégrales des puissances d'idéaux engendrés par un système de paramètres, Journal of Algebra, 129 (1990), 96 - 102.
8. 8. Nguyen Khoa Son, Approximate controllability of linear retarded systems in $R^n \times L^p$: a discrete time approach, Lecture Notes in Control and Information Sciences, Springer-Verlag, 143(1990), 404-412
9. 9. Vu Ngoc Phat, Nguyen Khoa Son, Linear nonstationary control systems : null controllability with restrained controls in Banach spaces, Optimization, 21(1990), 271-280
10. 10. Nguyen Khoa Son, A unified approach to constrained approximate controllability for the heat equations and the retarded equations, Journal of Mathematical Analysis and Applications, 159(1990), 1-19
11. 11. NGuyen Dinh Cong, On central exponents of linear systems with coefficients perturbed by a white noise. English transl., Differential Equations, 26 (1990), N$^o$ 3, 307 - 313.
12. 12. NGuyen Dinh Cong, On Lyapunov exponents and central exponents of linear systems of differential equations with almost periodic coefficients under random perturbations, Acta Mathematica Vietnamica, 15 (1990), N$^o$ 1, 69 - 73.
13. 13. Dinh Nho Hao, Notes on a nonlinear dispersive equation., Zeitschrift f\"ur angewandte Mathematik und Mechanik, 70 (1990), 627 - 628.
14. 14. Dinh Nho Hao, Notes on the Benjamin-Bona-Mahony equation, Applicable Analysis, 35 (1990), 221 - 246.
15. 15. Dinh Nho Hao, Tran Duc Van, R. Gorenflo, Approximating the solution to the Cauchy problem and the boundary value problem for the Laplace equation, In: Theory and Practice of Geophysical Data Inversion (eds.: A. Vogel et al.), Vieweg & Sohn, Braunschweig/Wiesbaden, 1990, 35 - 48
16. 16. Nguyen Dong Yen, Pham Huy Dien, On differential estimations for marginal functions in mathematical programming problems with inclusion constraints, Lecture Notes in Control and Information Sciences, Springer Verlag, Berlin, 143 (1990), 244 - 251.
17. 17. Le Tuan Hoa, Mario Fiorentini, On monomial k-Buchsbaum curves in $P^r$., Annali dell’Università di Ferrara, VII, Sc. Mat., 36 (1990), 159 - 174.
18. 18. Nguyen Quoc Thang, A note on the Hasse principle, Acta Arithmetica, 54 (1990), 171 - 184.
19. 19. On polyhedral annexation method for concave minimization, In: Functional Analysis, Optimization and Mathematical Economics, (Lev J. Leifman and J. B. Rosen eds.), Oxford University Press, (1990) 248 - 260
20. 20. Ergodic properties of the multi-dimensional Rayleigh gas with a semipermeable barriers, J. Statist. Phys. 59 (1990), 1589 - 1602
21. 21. The uniqueness of solution of infinite order boundary value problems, Acta Math. Vietnam. 15 (1990), 41 - 54
22. 22. Sobolev-Orlicz spaces of infinite order and nonlinear differential equations, Analysis 10 (1990), 231 - 245
23. 23. Some fixed point theorems for mappings of contraction type in quasimetric spaces, Acta Math. Vietnam. 15 (1990), 85 - 91
24. 24. Nombres de Lojasiewicz et singularites a l infini des polynomes de deux variables complexes, C. R. Acad. Sci. Paris, Serie1 311 (1990), 429 - 432
25. 25. On differential estimations for marginal functions in mathematical programming problems with inclusion constraints, In: Lecture Notes in Control and Information Sciences, Springer Verlag, Berlin, 143 (1990), 244 - 251
26. 26. Certain integral transformations with the Macdonald function K_\nu(z) in the kernels, Ukrain. Mat. Zh. 42 (1990), 990 - 993; English transl.: Ukrain. Math. J. 42 (1990), 880 - 883
27. 27. Modified Laplace transforms and a multidimensional H-transform, Dokl. Akad. Nauk SSSR 313 (1990), 1299 - 1302; English transl.: Soviet Math. Dokl. 42 (1991), 150 - 153
28. 28. Mapping properties and composition structure of convolution transforms, Mapping properties and composition structure of convolution transforms