Institute of Mathematics

Ta Thi Hoai An

Ta Thi Hoai An

Professor. Dr. Sc.

Department of Algebra and Number Theory

Research Interest: Algebraic Number Theory, Nevanlinna Theory, Algebraic geometry

Contact

Office: Room 307, Building A5
Phone: +84 024 37563474 (ext. 154)
Email: tthan AT math.ac.vn

Scientific CV

Address
Office: Building A5, Room 305
Tel: +84 024 37563474 (ext. 154)
Email: tthan AT math.ac.vn
 

Education and academic degrees:

  • 1993: Bachelor/Master
  • 2001: PhD
  • 2014: Doctor of Science
  • 2009: Associate Professor


Research areas: Algebraic Number Theory, Nevanlinna Theory, Algebraic geometry
 

Fellowships and awards: 

  • Award by Institute of Mathematics Vietnam 2009.
  • Humboldt Research Fellowship for experience researcher, Germany.   
  • Junior Associate Research Member at ICTP, Italy (2004-2012).


Visiting  positions:

  •  Free University, Berrlin Germany 2014-2014.
  • September to October 2010: Mathematical Institute, Academia Sinica, Taiwan.
  • July 2009: Mathematical Institute, Academia Sinica, Taiwan
  • February 2009- May 2009: Essen- Duisburg University, Germany (Humboldt Fellow).
  • November 2008-January 2009: Bonn, Germany
  • October to November 2008: Fields Institute, Toronto, Canada.
  • May 2008: Visiting associate professor, Blaise Pascal University, France.
  • Spring 2008: International Center for Theoretical Physics, Trieste, Italy.
  • Fall 2006: Mathematical Institute, Academia Sinica, Taiwan.
  • Fall 2005: International Center for Theoretical Physics, Trieste, Italy.
  • June-July 2004: Visiting associate professor, Blaise Pascal University, France.
  • From Sep. 2001 to June 2004:  Postdoctoral, Mathematical Institute, Academia Sinica, Taiwan.
  • From Oct. 2000 to Dec. 2000: Fourier Institute, Grenoble University, France.            
  • From May 1999 to July 1999: Paul Sabatier University, France.             

Student Supervision:

Ph.D.:  

  • Ha Tran Phuong, co-advisor, Ph. D. (Completed 2009), Hanoi Institute of Mathematics.
  • Nguyen Thi Ngoc Diep, co-advisor, Ph.D (ompleted 2015), Vinh University
  • Nguyen Viet Phuong (Currently)

Master:

  • Doan Thi Thao (Completed 2022),
  • Nguyen Thi Phuong  (Completed 2022),
  • Dang Thi Thu Thao (Completed 2021)
  • Nguyen Viet Phuong, M. S. (Completed 2009), Thai Nguyen university.
  • Nguyen Xuan Linh, M. S. (Completed 2009), Hanoi Nature Scinence university.
  • Nguyen Truong Giang, M. S. (Completed 2008), Thai Nguyen university.
  • Do Hong Nga, M. S. (Completed 2008), Thai Nguyen university.
  • Dao Thi Thu Ha, M. S. (Completed 2007), Thai Nguyen university.
  • Hoang Tan Viet, M. S. (Completed 2006), Thai Nguyen university.

Grant support:

  1. The second main theorem and applications, NAFOSTED, PI (currently)
  2. The Nevanlinna Index, NAFOSTED, PI (2018-2020)
  3. Distribution theory and some applications, NAFOSTED, PI (2015-2017)
  4. Buchi, Hensley’s problems for meromorphic functions and Related Topics, NAFOSTED, PI (2012-2014)
  5. Nevanlinna Theory and Related Topics, NAFOSTED, PI (2009-2011)

Scientific Publications

Publications

  1. 1. Ta Thi Hoai An, Ngo Quoc Hoan, Multiple Eulerian polynomials, The Journal of Analysis, Volume 34, pages 21–34, (2026) (2026)
  2. 2. Ta Thi Hoai An, William Cherry, Nguyen Viet Phuong, A non-Archimedean second main theorem for hypersurfaces in subgeneral position, Proceedings of the American Mathematical Society, 153 (2025), 3395-3402 (2025)
  3. 3. Nguyen Viet Phuong, Ta Thi Hoai An, Defect relations for holomorphic curves of finite lower order intersecting hypersurfaces, Journal of Mathematical Analysis and Applications Volume 544, Issue 2, 15 April 2025, 129086 (2025)
  4. 4. Ta Thi Hoai An, Nguyen Viet Phuong, A Non-Archimedean Second Main Theorem for Small Functions and Applications, Taiwanese Journal of Mathematics, 27 (2023), 913-929 (2023)
  5. 5. Ta Thi Hoai An, Nguyen Viet Phuong, A lemma about meromorphic functions sharing a small function, Computational Methods and Function Theory 22 (2022), no. 2, 277–286, (2022)
  6. 6. Ta Thi Hoai An, Nguyen Viet Phuong, Zeros of Differential Polynomials of Meromorphic Functions, Acta Mathematica Vietnamica, 47 (2022), pages 211–221 (2022)
  7. 7. Ta Thi Hoai An, Nguyen Viet Phuong, A note on Hayman’s conjecture, International Journal of MathematicsVol. 31, No. 06, 2050048 (2020) (2020)
  8. 8. Alain Escassut, Ta Thi Hoai An, Classical p-adic Nevanlinna theory and Nevalinna theory out of a hole. [Corrected title: Classical p-adic Nevanlinna theory and Nevanlinna theory out of a hole], Advances in ultrametric analysis, 161–203, Contemp. Math., 704, Amer. Math. Soc., Providence, RI, 2018 (2018)
  9. 9. Alain Escassut, Ta Thi Hoai An, New applications of the $p$-adic Nevanlinna theory p-Adic Numbers Ultrametric, p-Adic Numbers, Ultrametric Analysis and Applications, 10 (2018), 12–31. (2018)
  10. 10. Ta Thi Hoai An, Nguyen Viet Phuong, Uniqueness theorems for differential polynomials sharing a small function, Computational Methods and Function Theory, 17 (2017), 613–634 (2017)
  11. 11. Alain Escassut, Ta Thi Hoai An, P-Adic Nevanlinna Theory Outside of a Hole, Vietnam Journal of Mathematics, 45 (2017), 681–694 (2017)
  12. 12. Ta Thi Hoai An, Hoang Le Truong, Nguyen Tat Thang, Tran Nam Trung, Thomas Hales, Mark Adams, Gertrud Bauer, Dang Tat Dat, Cezary Kaliszyk, Victor Magron, Sean Mclaughlin, Nguyen Quang Truong, Tobias Nipkow, Steven Obua, Joseph Pleso, Jason Rute, Alexey Solovyev, Alexey Solovyev, Thi Diep Trieu, Josef Urban, Ky Vu, Roland Zumkeller, Forum of Mathematics, Pi, 5 (2017) 29 pages. (2017)
  13. 13. Ta Thi Hoai An, Cherry William, Julie Tzu-Yueh Wang, Supplement and Erratum to "Algebraic degeneracy of non-Archimedean analytic maps'' [Indagationes Mathematicae (N.S.) 19 (2008) 481–492], Indagationes Mathematicae (N.S.) 26 (2015), 329–336 (2015)
  14. 14. Ta Thi Hoai An, Nguyen Thi Ngoc Diep, Genus one factors of curves defined by separated variable polynomials, Journal of Number Theory, 133 (2013), 2616-2634 (2013)
  15. 15. Ta Thi Hoai An, Hsiu-Lien Huang, Julie Tzu-Yueh Wang, Generalized B\"uchi's problem for algebraic functions and meromorphic functions, Mathematische Zeitschrift 273 (2013), 95-122 (2013)
  16. 16. Ta Thi Hoai An, Nguyen Thi Ngoc Diep, Heights of Function Field Points on Curves Given by Equations with Separated Variables, International Journal of Mathematics,23 (2012) (2012)
  17. 17. Ta Thi Hoai An, William Cherry, Preface [Special issue dedicated to Professor Ha Huy Khoai on the occasion of his 65th birthday], Vietnam J. Math. 39 (2011), no. 3, v--vii (2011)
  18. 18. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Hensley's problem for complex and non-Archimedean meromorphic functions, Journal of Mathematical Analysis and Applications 381(2011), 661 -- 677 (2011)
  19. 19. Ta Thi Hoai An, Aaron Levin, Julie Tzu-Yueh Wang, A $p$-adic Nevanlinna-Diophantine correspondence, Acta Arithmetica 146 (2011), 379 -- 397 (2011)
  20. 20. Ta Thi Hoai An, Unique range sets for meromorphic functions constructed without an injectivity hypothesis, Taiwanese Journal of Mathematics, 15 (2011), 697 -- 709 (2011)
  21. 21. Ta Thi Hoai An, Julie Tzu-Yueh Wang, A note on uniqueness polynomials of entire functions, Vietnam J. Math. 37 (2009), 225-236 (2009)
  22. 22. Ta Thi Hoai An, Ha Tran Phuong, On an explicit estimate on multiplicity truncation in the second main theorem for holomorphic curves encountering hypersurfaces in general position in projective space, Houston Journal of Mathematics, 35 (2009), 775-786 (2009)
  23. 23. Ta Thi Hoai An, Ha Huy Khoai, A survey on uniqueness polynomials and unique range sets, . In: Some topics on value distribution and differentiability in complex and p-adic analysis.,143-163; Math. Monogr. Ser., 11, Sci. Press Beijing, 20008. (2008)
  24. 24. Ta Thi Hoai An, Ha Huy Khoai, Uniqueness polynomials and unique range sets, . Some topics on value distribution and differentiability in complex and p-adic analysis, 148–163, Math. Monogr. Ser., 11, Sci. Press Beijing, Beijing, 2008. (2008)
  25. 25. Ta Thi Hoai An, Alain Escassut, Meromorphic solutions of equations over non-Archimedean fields, The Ramanujan Journal, 15 (2008), N0 3, 415 - 433. (2008)
  26. 26. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Pit-Mann Wong, Non-Archimedean analytic curves in the complements of hypersurface divisors, Journal of Number Theory, 128 (2008), 2275 - 2281. (2008)
  27. 27. Ta Thi Hoai An, Cherry William, Julie Tzu-Yueh Wang, Algebraic degeneracy of non-archimedean analytic maps, Indagationes Math. 19 (2008), 481-492 (2008)
  28. 28. Ta Thi Hoai An, Julie Tzu-Yueh Wang, An effective Schmidt's subspace theorem for non-linear forms over function fields, Journal of Number Theory 125 (2007), no. 1, 210--228 (2007)
  29. 29. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Unique range sets and uniqueness polynomials for algebraic curves, Transactions of the American Mathematical Society, 359 (2007), 937 - 964(electronic). (2007)
  30. 30. Ta Thi Hoai An, A defect relation for non-Archimedean analytic curves in arbitrary projective varieties, Proceedings of the American Mathematical Society, 135 (2007), 1255 - 1261. (2007)
  31. 31. Ta Thi Hoai An, Julie Tzu-Yueh Wang, An effective Schmidt's subspace theorem for non-linear forms over function fields, Journal of Number Theory, 125 (2007), 210 - 228. (2007)
  32. 32. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Pit-Mann Wong, Unique range sets and uniqueness polynomials in positive characteristic. II, Acta Arithmetica, 116 (2005), N0 2, 115 - 143 (2005)
  33. 33. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Unique range sets for non-Archimedean entire functions in positive characteristic fields, In: Ultrametric Functional Analysis, 323 - 333, Contemp. Math. 384, Amer. Math. Soc., Providence, RI, 2005. (2005)
  34. 34. Ha Huy Khoai, Ta Thi Hoai An, Uniqueness problem with truncated multiplicities for meromorphic functions on a non-Archimedean field, Southeast Asian Bulletin of Mathematics, 27 (2003), 477 - 486. (2003)
  35. 35. Ta Thi Hoai An, Julie Tzu-Yueh Wang, Uniqueness polynomials for complex meromorphic functions, International Journal of Mathematics, 13 (2002), 1095 - 1115. (2002)
  36. 36. Ha Huy Khoai, Ta Thi Hoai An, On uniqueness polynomials and bi-URs for $p$-adic meromorphic functions, Journal of Number Theory, 87 (2001), N0 2, 211 - 221 (2001)

Preprints

  1. 1. Ta Thi Hoai An, Ngo Quoc Hoan, Multiple Eulerian polynomials (2023)
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BẢNG TỔNG HỢP Kết quả xét tuyển Kỳ tuyển dụng viên chức năm 2026 BẢNG TỔNG HỢP Kết quả xét tuyển Kỳ tuyển dụng viên chức năm 2026 Thông báo tuyển sinh đào tạo trình độ Tiến sĩ đợt II năm 2026 Thông báo tuyển sinh đào tạo trình độ Tiến sĩ đợt II năm 2026 Thông báo tuyển sinh đào tạo trình độ dự bị nghiên cứu sinh đợt II năm 2026 Thông báo tuyển sinh đào tạo trình độ dự bị nghiên cứu sinh đợt II năm 2026

Upcoming Conferences

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Conference / Workshop:

Workshop on Singularities and Related Topics (Conference in Memory of Professor Le Dung Trang)

New Publications

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Do Duy Hieu, Block-pair edge community detection in bipartite networks via an adaptive spectral-modularity framework, Computational and Mathematical Organization Theory, Volume 32, article number 31 (2026)
Nguyen Thi Van Hang, Felipe Lara, Nguyen Dong Yen, Discontinuous strongly quasiconvex functions, Journal of Optimization Theory and Applications 210 (2026), Paper No. 40, 18 pp
Doan Trung Cuong, Le Thi Thanh Nhan, On the depth of the canonical module, Journal of Algebra, Volume: Volume 712 (2027), Pages: 416-435

Institute Lectures

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Periods and exponential periods

Speaker: Claude Sabbah (CNRS, École Polytechnique, Institut Polytechnique de Paris, France)