Email: youjin@tsinghua.edu.cn
教育背景博士（中国科学技术大学，1994年）、教授（博导）
工作履历1999.12–现在，清华大学数学科学系，教授
1997.11–1999.11，日本京都大学数学系，JSPS博士后
1995.11–1997.10，意大利国际高等研究院，博士后
1994.01–1995.10，国际理论物理中心，博士后
1990.06–1991.07，俄罗斯斯捷克洛夫数学所圣.彼得堡分所，访问
1990.03–1994.01，中国科学技术大学数学系，助教、讲师
研究领域数学物理、可积系统理论。
奖励与荣誉国家基金、教育部自然科学奖一等奖获得者，教育部。
学术成果主要从事数学物理和可积系统理论的研究，与合作者在非线性可积系统的分类理论、Frobenius流形理论及其在Gromov-Witten不变量理论中的应用等方面作出了一系列重要的工作。代表性论文如下：
1.Drinfeld-Sokolov hierarchies and diagram automorphisms of affine Kac-Moody algebras. To appear in Communications in Mathematical Physics. (with S.-Q. Liu, C.-Z. Wu, X. Zhou)
2.Extended affine Weyl groups of BCD-type: their Frobenius manifolds and Landau-Ginzburg superpotentials, Advances in Mathematics 351 (2019), 897-946. (with B. Dubrovin, I. Strachan, D. Zuo).
3.Bihamiltonian cohomologies and integrable hierarchies II: the tau structures. Communications in Mathematical Physics 361 (2018), 467-524. (with B. Dubrovin, S.-Q. Liu)
4.Fractional Volterra hierarchy. Letters in Mathematical Physics 108 (2018), 261-283. (with S.-Q. Liu, C. Zhou)
5.Hodge integrals and tau-symmetric integrable hierarchies of Hamiltonian evolutionary PDEs. Advances in Mathematics 293 (2016), 382-435. (with B. Dubrovin, S.-Q. Liu, D. Yang)
6.BCFG Drinfeld-Sokolov hierarchies and FJRW-theory. Inventiones Mathematicae 201 (2015), 711-772. (with S.-Q. Liu, Y. Ruan)
7.Proof of a conjecture on the genus two free energy associated to the A_n singularity. Journal of Geometry and Physics 76 (2014), 10-24. (with Y. Fu, S.-Q. Liu, C. Zhou)
8.Bihamiltonian cohomologies and integrable hierarchies I: a special case. Communications in Mathematical Physics 324 (2013), 897-935. (with S.-Q. Liu)
9.Uniqueness theorem of W-constraints for simple singularities. Letters in Mathematical Physics 103 (2013), 1329-1345. (with S.-Q. Liu, D. Yang)
10.On the genus two free energies for semisimple Frobenius manifolds. Russian Journal of Mathematical Physics 19 (2012), 273-298. (with B. Dubrovin, S.-Q. Liu)
11.The inversion symmetry of the WDVV equations and tau functions. Physica D 241 (2012), 2168-2177. (with S.-Q. Liu, D. Xu)
12.Jacobi structures of evolutionary partial differential equations, Advances in Mathematics 227 (2011), 73-130. (with S.-Q. Liu)
13.On the Drinfeld-Sokolov hierarchies of D type. International Mathematics Research Notices 2011 (2011), 1952-1996. (with S.-Q. Liu, C.-Z. Wu)
14.Hamiltonian structures and their reciprocal transformations for the r-KdV-CH hierarchy. Journal of Geometry and Physics 59 (2009), 1227-1243. (with M. Chen, S.-Q. Liu)
15.Frobenius manifolds and central invariants for the Drinfeld-Sokolov bihamiltonian structures, Advances in Mathematics 219 (2008), 780-837. (with B. Dubrovin, S.-Q. Liu)
16.On properties of Hamiltonian structures for a class of evolutionary PDEs. Letters in Mathematical Physics 84 (2008), 47-63. (with S.-Q. Liu, C.-Z. Wu)
17.On Hamiltonian perturbations of hyperbolic systems of conservation laws I: quasi-triviality of bi-Hamiltonian perturbations. Communications on Pure and Applied Mathematics 59 (2006), 559-615. (with B. Dubrovin, S.-Q. Liu)
18.A two-component generalization of the Camassa-Holm equation and its solutions. Letters in Mathematical Physics 75 (2006), 1-15. (with M. Chen, S.-Q. Liu)
19.On quasi-triviality and integrability of a class of scalar evolutionary PDEs. Journal of Geometry and Physics 57 (2006), 101-119. (with S.-Q. Liu)
20.Bihamiltonian systems of hydrodynamic type and reciprocal transformations. Letters in Mathematical Physics 75 (2006), 79-92. (with T. Xue)
21.Deformations of semisimple bihamiltonian structures of hydrodynamic type. Journal of Geometry and Physics 54 (2005), 427-453. (with S.-Q. Liu)
22.Virasoro symmetries of the extended Toda hierarchy. Communications in Mathematical Physics 250 (2004), 161-193. (with B. Dubrovin)
23.The extended Toda hierarchy. Moscow Mathematical Journal 4 (2004), 313-332. (with G. Carlet, B. Dubrovin)
24.Deformations of the bihamiltonian structures on the loop space of Frobenius manifolds. Journal of Nonlinear Mathematical Physics 9 (2002), Suppl. 1, 243-257.
25.On the CP^1 topological sigma model and the Toda lattice hierarchy. Journal of Geometry and Physics 40 (2002), 215-232.
26.Frobenius manifolds and Virasoro constraints. Selecta Mathematica, New Series 5 (1999), 423-466. (with B. Dubrovin)
27.Bihamiltonian hierarchies in 2D topological field theory at one-loop approximation. Communications in Mathematical Physics 198 (1998), 311-361. (with B. Dubrovin)
28.Extended affine Weyl groups and Frobenius manifolds. Compositio Mathematica 111 (1998), 167-219. (with B. Dubrovin)
29.On Segal-Wilson's construction for the tau-functions of the constrained KP hierarchies. Letters in Mathematical Physics 36 (1996), 1-15.
30.A remark on the representation theory of the algebra U_q(sl(n)) when q is a root of unity. Journal of Physics A: Math. Gen. 25 (1991), 851-859.
人才培养三名硕士毕业生目前分别任墨尔本大学数学与统计系讲师、丘成桐数学科学中心助理教授、南开大学陈省身数学研究所特聘研究员；七位博士毕业生中三位分别任清华大学数学科学系教授（于2017年获国家基金）、中国科学技术大学数学科学学院教授（于2018年入选国家青年）、中山大学数学学院副教授。