Đinh Sĩ Tiệp

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Ấn phẩm

1. 1. Đinh Sĩ Tiệp, Phạm Tiến Sơn, The mountain pass theorem in terms of tangencies, , Journal of Mathematical Analysis and Applications, Volume 554, Issue 1, 1 February 2026, 130000 (2026)
2. 2. Đinh Sĩ Tiệp, Nguyễn Xuân Việt Nhân, Lipschitz continuity of Lipschitz-Killing curvature densities at infinity, Selecta Mathematica, Volume 31, article number 35, (2025) (2025)
3. 3. Đinh Sĩ Tiệp, Guo Feng, Nguyễn Hồng Đức, Phạm Tiến Sơn, Computation of the Łojasiewicz exponents of real bivariate analytic functions, Manuscripta Mathematica . Volume 176, 1 (2025) (2025)
4. 4. Đinh Sĩ Tiệp, Feng Guo, Nguyễn Hồng Đức, Phạm Tiến Sơn, Limits of real bivariate rational functions, Journal of Symbolic Computation Volume 129, 2025, 102405 (2025)
5. 5. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Characterizations of directional openness for set-valued mappings, Pure Appl. Funct. Anal., 8 (2023), no. 4, 1023-1037. (2023)
6. 6. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Definable continuous mappings and Whyburn's conjecture, Proceedings of the American Mathematical Society 151 (2023), no. 5, 2081--2095, (2023)
7. 7. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Lipschitz continuity of tangent directions at infinity, Bulletin des Sciences Mathématiques, 182 (2023), 103223 (2023)
8. 8. Đinh Sĩ Tiệp, Zbigniew Jelonek, Phạm Tiến Sơn, Stability of closedness of semi-algebraic sets under continuous semi-algebraic mappings, Proceedings of the American Mathematical Society, 150 (2022), 3663-3673 (2022)
9. 9. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Stability of Closedness of Closed Convex Sets under Linear Mappings, Journal of Convex Analysis, 28 (2021), 1281-1291 (2021)
10. 10. Đinh Sĩ Tiệp, Guo Feng, Phạm Tiến Sơn, Global Łojasiewicz inequalities on comparing the rate of growth of polynomial functions, Journal of Mathematical Analysis and Applications, 499 (2021), 125057, (2021)
11. 11. Đinh Sĩ Tiệp, Zbigniew Jelonek, Thom Isotopy Theorem for Nonproper Maps and Computation of Sets of Stratified Generalized Critical Values,, Discrete & Computational Geometry volume 65, pages 279–304 (2021), (2021)
12. 12. Đinh Sĩ Tiệp, Krzysztof Kurdyka, Phạm Tiến Sơn, Global mixed Łojasiewicz inequalities and asymptotic critical values, Annales Polonici Mathematici, 123 (2019), 259–266 (2019)
13. 13. Đinh Sĩ Tiệp, Hà Huy Vui, Phạm Tiến Sơn, Hölder-Type Global Error Bounds for Non-degenerate Polynomial Systems, Acta Mathematica Vietnamica, 42 (2017), 563–585 (2017)
14. 14. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Łojasiewicz inequalities with explicit exponents for smallest singular value functions, Journal of Complexity, 41 (2017), 58-71 (2017)
15. 15. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Łojasiewicz-type inequalities with explicit exponents for the largest eigenvalue function of real symmetric polynomial matrices, International Journal of Mathematics, 27 (2016), 27 page (2016)
16. 16. Đinh Sĩ Tiệp, Krzysztof Kurdyka, Horizontal Gradient of Polynomial Functions for the Standard Engel Structure on $\mathbb R^4$, Journal of Dynamical and Control Systems, 22(2016), 15-34 (2016)
17. 17. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Hà Huy Vui, A Frank–Wolfe type theorem for nondegenerate polynomial programs, Mathematical Programming, 147(2014), 519-538 (2014)
18. 18. Đinh Sĩ Tiệp, Hà Huy Vui, Phạm Tiến Sơn, Nguyễn Thị Tha̓o, Global Łojasiewicz-type inequality for non-degenerate polynomial maps, Journal of Mathematical Analysis and Applications 410 (2014), 541–560 (2014)
19. 19. Đinh Sĩ Tiệp, Krzysztof Kurdyka, Olivier Le Gal, Łojasiewicz inequality on non-compact domains and singularities at infinity, International Journal of Mathematics 24 (2013), 1350079, 8 pp (2013)
20. 20. Đinh Sĩ Tiệp, Hà Huy Vui, Nguyễn Thị Tha̓o, Lojasiewicz inequality for polynomial functions on non-compact domains, International Journal of Mathematics, 23 (2012), 28p (2012)
21. 21. Patrice Orro, Krzysztof Kurdyka, Đinh Sĩ Tiệp, Gradient horizontal de fonctions polynomiales, Annales de l'Institut Fourier, 59 (2009),1999-2042 (2009)

Tiền ấn phẩm

1. 1. Đinh Sĩ Tiệp, Feng Guo, Nguyễn Hồng Đức, Phạm Tiến Sơn, The numerical range of limits of real rational functions (2026)
2. 2. Đinh Sĩ Tiệp, Nguyễn Xuân Việt Nhân, Planar extensions in o-minimal structures (2026)
3. 3. Đinh Sĩ Tiệp, Phạm Tiến Sơn, Nichtnegativstellensatze for definable functions in o-minimal structures, preprint arXiv. (2021)
4. 4. Đinh Sĩ Tiệp, Olivier Le Gal, Phạm Tiến Sơn, Limits of tangent spaces to definable sets. (2019)

Các hoạt động khoa học

Seminar

1. Definable Schoenflies theorem (Part II)
2. Definable Schoenflies theorem