Vesselin Dimitrov

Vesselin Atanasov Dimitrov
Vesselin Atanasov Dimitrov
	Dimitrov at Oberwolfach in 2024
Born	Bulgaria
Education	Yale University (PhD)
Awards	David Goss Prize (2022); Oberwolfach Prize (2022); Salem Prize (2025); Fermat Prize (2025); Cole Prize (2026); New Horizons in Mathematics Prize (2026);
	Scientific career
Fields	Mathematics
Workplaces	Caltech
Thesis	Diophantine approximations by special points and applications to dynamics and geometry (2017)
Doctoral advisor	Alexander Goncharov

Vesselin Atanasov Dimitrov (in Bulgarian: Веселин Атанасов Димитров) is a Bulgarian mathematician known for his work in arithmetic geometry, Diophantine geometry, modular forms and number theory. He is currently a professor at Caltech, having previously taught at the University of Toronto.

Dimitrov received the Oberwolfach Prize and the David Goss Prize in 2022. In 2025, he received the Salem Prize and the Fermat Prize, and in 2026, the Cole Prize in Number Theory.

Research in mathematics

In 2019 Dimitrov proved the Schinzel–Zassenhaus conjecture on algebraic units that are not roots of unity.

Together with Ziyang Gao and Philipp Habegger, he proved a uniform version of the Mordell conjecture.

In collaboration with Frank Calegari and Yunqing Tang, Dimitrov proved the unbounded denominators conjecture of Atkin and Swinnerton-Dyer: if a modular form ⁠ $f(\tau )$ ⁠ is not modular for some congruence subgroup of the modular group, then the Fourier coefficients of ⁠ $f(\tau )$ ⁠ have unbounded denominators.

Early life and education

In 2005, he won a silver medal in the International Mathematics Olympiad, representing Bulgaria.

He earned a PhD from Yale University in 2017 under the supervision of Alexander Goncharov. His thesis is titled "Diophantine approximations by special points and applications to Dynamics and Geometry".

Awards

Dimitrov's work has been recognized by the following awards:

2022: David Goss Prize (shared with Ziyang Gao); Oberwolfach Prize
2023: IMI Mathematics Prize (Institute of Mathematics and Informatics, Bulgarian Academy of Sciences)
2025: Salem Prize, "for fundamental contributions to Diophantine geometry and number theory"; Fermat Prize.
2026: New Horizons in Mathematics Prize (shared with Yunqing Tang); Cole Prize in Number Theory (shared with Frank Calegari and Yunqing Tang), for their paper "The unbounded denominators conjecture".

References

↑ McKee, James; Smyth, Chris (2021). "The Schinzel–Zassenhaus conjecture". Around the Unit Circle: Mahler Measure, Integer Matrices and Roots of Unity. Cham: Springer. pp. 69–75. doi:10.1007/978-3-030-80031-4_4. ISBN 978-3-030-80030-7.
1 2 3 4 Bost, Jean-Benoît. "Oberwolfach Prize 2022 Laudatio for Vesselin Dimitrov" (PDF). Oberwolfach Research Institute for Mathematics.
↑ Dimitrov, Vesselin (2019-12-28). "A proof of the Schinzel-Zassenhaus conjecture on polynomials". arXiv:1912.12545 [math.NT].
↑ Dimitrov, Vesselin; Gao, Ziyang; Habegger, Philipp (2021). "Uniformity in Mordell–Lang for curves". Annals of Mathematics. 194 (1): 237–298. arXiv:2001.10276. doi:10.4007/annals.2021.194.1.4. MR 4276287.
↑ Calegari, Frank; Dimitrov, Vesselin; Tang, Yunqing (2025). "The unbounded denominators conjecture". Journal of the American Mathematical Society. 38 (3): 627–702. arXiv:2109.09040. doi:10.1090/jams/1053.
↑ International Mathematics Olympiad web-site: Bulgaria 2005
↑ Vesselin Dimitrov at the Mathematics Genealogy Project
↑ "Dimitrov and Gao Awarded 2022 David Goss Prize" (PDF). Notices of the American Mathematical Society. 69 (10): 1832–1833. 2022.
↑ "Richard A. Duke Assistant Professor Vesselin Dimitrov is the laureate of the 2023 IMI Mathematics Prize". Georgia Tech. September 4, 2023.
↑ "2025 Salem Prize Winners - School of Mathematics | Institute for Advanced Study". www.ias.edu. October 27, 2025.
↑ Institut de Mathématiques de Toulouse: Fermat Prize 2025
↑ "Calegari, Dimitrov, and Tang to Receive 2026 AMS Frank Nelson Cole Prize for Number Theory". www.ams.org. Retrieved 25 July 2026.

External links

YouTube: "CDM 2023: Vesselin Dimitrov: Modular forms and arithmetic algebraization methods"

[1] McKee, James; Smyth, Chris (2021). "The Schinzel–Zassenhaus conjecture". Around the Unit Circle: Mahler Measure, Integer Matrices and Roots of Unity. Cham: Springer. pp. 69–75. doi:10.1007/978-3-030-80031-4_4. ISBN 978-3-030-80030-7.

[:0-2] 1 2 3 4 Bost, Jean-Benoît. "Oberwolfach Prize 2022 Laudatio for Vesselin Dimitrov" (PDF). Oberwolfach Research Institute for Mathematics.

[3] Dimitrov, Vesselin (2019-12-28). "A proof of the Schinzel-Zassenhaus conjecture on polynomials". arXiv:1912.12545 [math.NT].

[4] Dimitrov, Vesselin; Gao, Ziyang; Habegger, Philipp (2021). "Uniformity in Mordell–Lang for curves". Annals of Mathematics. 194 (1): 237–298. arXiv:2001.10276. doi:10.4007/annals.2021.194.1.4. MR 4276287.

[5] Calegari, Frank; Dimitrov, Vesselin; Tang, Yunqing (2025). "The unbounded denominators conjecture". Journal of the American Mathematical Society. 38 (3): 627–702. arXiv:2109.09040. doi:10.1090/jams/1053.

[6] International Mathematics Olympiad web-site: Bulgaria 2005

[7] Vesselin Dimitrov at the Mathematics Genealogy Project

[8] "Dimitrov and Gao Awarded 2022 David Goss Prize" (PDF). Notices of the American Mathematical Society. 69 (10): 1832–1833. 2022.

[9] "Richard A. Duke Assistant Professor Vesselin Dimitrov is the laureate of the 2023 IMI Mathematics Prize". Georgia Tech. September 4, 2023.

[Salem-10] "2025 Salem Prize Winners - School of Mathematics | Institute for Advanced Study". www.ias.edu. October 27, 2025.

[11] Institut de Mathématiques de Toulouse: Fermat Prize 2025

[12] "Calegari, Dimitrov, and Tang to Receive 2026 AMS Frank Nelson Cole Prize for Number Theory". www.ams.org. Retrieved 25 July 2026.