刘会立，男，一九五九年出生于辽宁省辽阳市。一九七七年中学毕业后下乡务农。一九七八年三月考入沈阳师范学院数学系学习，一九八一年十二月沈阳师范学院本科毕业后留校任教。一九八六年九月考入东北工学院（现东北大学）数学系攻读微分几何硕士学位，一九八八年十二月东北工学院硕士毕业后留校从事数学教学和现代微分几何的研究工作。一九九三年接受德国柏林工业大学数学系的伍德. 西蒙教授的邀请，到柏林工业大学数学系，承担由德意志研究联合会资助的项目"仿射微分几何"的研究工作。一九九六年在柏林工业大学获得博士学位。一九九七年六月末回国，在东北大学数学系任正教授。◆====>

  Name                      Huili Liu

  Date of Birth             1959

  Place of Birth            Liaoning, P. R. China

  Nationality               Chinese

  Education     1968-1971   Primary School in Liaoning
                  1972-1977   Middle School in Liaoning
                  1978-1981   Teachers College of Shenyang,
                              Graduation: Bachelor Degree
                  1986-1988   Northeast University of Technology,
                              Graduation: Master Degree
                  1996        Technische Universitaet Berlin,
                              Ph. D
                  Academic Supervisor
                              Professor Dr. Udo Simon

  Occupation    1982-1986   Lecturer in Teachers
                              College of Shenyang
                  1989-1993   Lecturer in Northeast
                              University of Technology
                  August 1993-April 1997
                              Academic collaborator (DFG position)
                              in FB 3-Mathematik, Technische
                              UniversitaEt Berlin
                  May 1997 - June 1997
                              Guest Professor in
                              Technishe  Universitaet Berlin
                  From July 1997
                              Professor in
                              Northeastern University, P. R. China
                  August 1999
                              Guest Professor in
                              Mathematical Institute, Academy of
                              Science, P. R. China
                  September 1999 - December 1999
                              Guest Professor in
                              Technishe  Universitaet Berlin
                  November 2000 - January 2001
                              Guest Professor in
                              Technishe  Universitaet Berlin
                  August 2003 - October 2003
                              Guest Professor in
                              Technishe  Universitaet Berlin

Publications and Preprints

    Minimal timelike surfaces in 3-Minkowski space, J. of NEUT, 12(1991),308-310.
    Indefinite harmonic metrics, harmonic tensors and harmonic immersions, Northeastern Math. J., 7(1991), 397-405.
    Minimal immersions of Pseudo-Riemannian manifolds, Tsukuba J. of Math., 16(1992), 1-10.
    Minimal submanifolds and harmonic maps in Pseudo-Riemannian manifold, J. of NEUT, 13(1992), 94-100.
    Submanifolds of Pseudo-Riemannian sphere and Pseudo-hyperbolic space, J. of Liaoning Univ., 47(1992), No.2, 23-27.
    Harmonic maps and minimal immersions in Pseudo-Riemennian manifold, J. of Liaoning Univ., 47(1992), No.3, 76-84.
    Gauss-like maps, J. of Sichuan Teachers College, 13(1992), 201-207.
    Spherical rotation surfaces with constant mean curvature in 3-dimensional de Sitter space, Proceedings of the first academic annual meeting at youths of Liaoning Province, December, 1992, 33-37.
    Translation surfaces with dependant Gauss and mean curvatures in 3-space, J. of NEUT, 14(1993), 87-93.
    Rotation surfaces of finite type in Pseudo-Euclidean space, Algebras, Groups and Geometries, 10(1993), 253-261.
    Maximal and minimal rotation surfaces in 3-dimensional anti-de Sitter space, J. of Hebei Kexueyuan, 4(1993), 7-11.
    Parabolic rotation surfaces with constant mean curvature in 3-dimensional de Sitter space, J. of Yuzhou Univ., 10(1993), No.2, 6-9.
    Rotation surfaces with constant mean curvature in 4-dimensional Pseudo-Euclidean space, Kyushu J. of Math., 48(1994), 35-42.
    Centroaffinely homogeneous surfaces in R^3, Contributions to Algebra and Geometry, 35(1994), 109-117.
    On the Gauss map of rotation surfaces in 3-dimensional Minkowski space, Kyushu J. of Math., 48(1994), 347-356.
    Maximal and minimal rotation surfaces in 3-dimensional de Sitter space and their global stability, Atti del Semi. Mate. e Fisico dell'Univ. di Modena, 42(1994), 319-327.
    The centroaffine Tchebychev operator (summary), In: Geometry and Topology of Submanifolds VII, Proc. Conf. Diff. Geom. Leuven 1994, 172-175, World Scientific, 1995, 172-175.
    General Weierstrass formula of surfaces in 3-dimensional Minkowski space, Acta Mathematica Sinica, 38(1995), 191-199.
    Surfaces with null mean curvature of form f(x) + g(y) + h(z) = 0 in the 3-dimensional Minkowski space, J. of Liaoning Normal University, 18(1995), No.1, 10-16.
    The centroaffine Tchebychev operator, Results in Mathematics, 27(1995), 77-92.
    Conformal structure in affine geometry: complete Tchebychev hypersurfaces, Abh. Math. Sem. Hamburg, 66(1996), 249-262.
    Classification of the flat equi-centroaffinely homogeneous surfaces in R^4, In: Geometry and Topology of Submanifolds VIII, edited by F. Dillen, et al., Proc. Conf. Nordfjordeid, Norway, 18-31 July 1995, World Scientific, Singapore, 1996, 209-220.
    Classification of the flat equi-centroaffinely homogeneous surfaces with indefinite metric in R^4, Results in Math., 29(1996), 280-304.
    Relative Tchebychev surfaces in R^3, Kyushu J. of Math., 50(1996), 533-540.
    Centroaffinely homogeneous surfaces in R^3 and R^4, Dissertation, FB Mathematik, TU Berlin 1996.
    Recent developments in affine differential geometry, In: Geometry and Topology of Submanifolds VIII, edited by F. Dillen, et al., Proc. Conf. Nordfjordeid, Norway, 18-31 July 1995, World Scientific, Singapore, 1996, 1-15 \& 393-408.
    Classification of Surfaces in R^3 which are centroaffine - minimal and equiaffine - minimal, Bull. Belg. Math. Soc., 3(1996), 577-583.
    Rotation surfaces of finite type in 3-dimansional de Sitter space, Algebras, Groups and Geometries, 13(1996), 359-369.
    Cubic form methods and relative Tchebychev hypersurfaces, Geometriae Dedicata, 66(1997), 203-221.
    Indefinite equi-centroaffinely homogeneous surfaces with vanishing Pick-Invariant in R^4, Hokkaido Math. J., 26(1997), 225-251.
    Centroaffine surfaces with parallel traceless cubic form, Bull. Belg. Math. Soc., 4(1997), 493-499.
    Equi-centroaffinely homogeneous surfaces with vanishing Pick-Invariant in R^4, Proceedings of 1-st Non-Orthodox School on Nonlinearity & Geometry, 1998, 335-340.
    Codazzi Tensors and the Topology of Surfaces, Annals Global Analysis and Geometry, 16(1998), 1-14.
    Higher Order Codazzi Tensors on conformally flat Spaces, Contributions Alg. and Geom., 39(1998), 329-348.
    Hypersurfaces in space forms with some constant curvature functions, In: Geometry and Topology of Submanifolds IX, World Scientific, Singapore, 1999, 48-63.
    The third fundamental form metric for hypersurfaces in nonflat space forms, J. of Geometry, 65(1999), 130-142.
    Polar Hypersurfaces in Spheres, In: Geometry and Topology of Submanifolds IX, World Scientific, Singapore, 1999, 33-47.
    Translation surfaces with constant mean curvature in 3-dimensional spaces, J. Geometry, 64(1999), 141-149.
    Flat centroaffinely homogeneous surfaces in R^4, Bulletin of the Institute of Mathematics Academia Sinica, 27(1999), 85-97.
    Hyperbolic rotation surfaces with constant mean curvature in 3-de Sitter space, Bull. Belg. Math. Soc., 7(2000), 1-10.
    The study on crack diagnosis system of rectangle thin plate structure fixed at four sides,Engineering Design, 23(2000), 38-40.
    Bertrand curves in the Lorentzian geometry, J. Wuhan Inst. Chem. Tech., 32, No. 3(2000), 78-79.
    A condition of state-feedback $H_{\infty}$ control for descriptor systems, Control and Decision, 16(2001), 219-221.
    Moebius isotropic submanifolds in S^{n}, Tohoku Math. J., 53(2001), 553-569.
    Application of simulated annealing algorithm in rotary mechanism fault diagnosis, HEAVY MACHINERY, 2001, No.2, 54-56.
    Application of genetic algorithm in optimal design of elbow bar-type extrusion press, METALFORMING MACHINERY, 36(2001), No.1, 41-42.
    Rotation Surfaces with constant mean curvature in 3-dimensional Anti-de Sitter space (Chinese), Acta Mathematica Sinica, 45(2002), 1177-1184.
    Rotation surfaces in 4-dimensional Euclidean space (Chinese), J. of NEUT, 23(2002), 499-502.
    Weingarten rotation surfaces in 3-dimensional de Sitter space, J. of Geometry, 79(2004), 156-168.
    Moebius isoparametric hypersurfaces in S^{n+1} with two distinct principal curvatures, Acta Mathematica Sinica, English Series, 18(2002), 437-446.
    The curves in the lightlike cone, Contributions to Algebra and Geometry, 45(2004), 291-303.
    The surfaces in the lightlike cone, Journal of Mathematical Analysis and Applications, 325(2007), 1171-1181.
    Huili Liu, Seoung Dal Jung, Indefinite centroaffine surfaces with vanishing generalized Pick function, Journal of Mathematical Analysis and Applications, 329(2007), 712-720.
    Fan Wang, Huili Liu, Mannheim partner curves in 3-Euclidean space (Chinese), Mathematics in Practice and Theory, 37(2007), 141-143.
    Yuan Yuan, Huili Liu, Principal normal surfaces of curves, Journal of Northeastern University, 28(2007), 145-148.
    Yanhua Yu, Huili Liu, The factorable minimal surfaces, Proceedings of The Eleventh International Workshop on Differential Geometry, 11(2007), 33-39.
    U-Hang Ki, Huili Liu, Some characterizations of real hypersurfaces of type (A) in a nonflat complex space form, Bulletin of the Korean Mathematical Society, 44(2007), 157-172.
    Yun Yang, Huili Liu, Classification of quadratic surfaces in 3-Minkowski space, Journal of Northeastern University, 28(2007), 898-901.
    Yanhua Yu, Huili Liu, Curves on 2-de Sitter space in 3-Minkowski space, Journal of Northeastern University, 28(2007), 902-904.
    Seoung Dal Jung, Huili Liu, Dong Joo Moon, A Liouville type theorem for harmonic morphisms, Journal of Korean Mathematical Society, 44(2007), No. 4, 941-947.
    Huili Liu, Seoung Dal Jung, Hypersurfaces which are equiaffine extremal and centroaffine extremal, Bull. Braz. Math. Soc., New Series, 38(4)(2007), 555-571.
    Yun Yang, Huili Liu, Darboux curve in 3-Euclidean space, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 3-9.
    Yun Yang, Huili Liu, Normalizations of centroaffine immersions with codimension two, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 66-72.
    Yanhua Yu, Huili Liu, Curves in 2-affine space and Euclidean space, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 73-76.
    Huili Liu, Extremal surfaces in equiaffine and centroaffine geometry, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 85-94.
    Jinhua Qian, Huili Liu, Null Bertrand curves in 3-Minkowski space, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 122-128.
    Yuan Yuan, Huili Liu, Translation surfaces in 3-Minkowski space, Proceedings of Workshop on Differential Geometry and Applications, 2007 International Joint Seminar of The KOSEF-NSFC Scientific Cooperation Program, edited by Huili Liu and Young Ho Kim, September 17-19, 2007, Taegu, Korea, 149-156.
    Huili Liu, Fan Wang, Mannheim partner curves in 3-space, J. of Geometry, 88 (2008), 120–126. Also Proceedings of The Eleventh International Workshop on Differential Geometry, 11(2007), 25-31.
    Dong Joo Moon, Huili Liu, Seoung Dal Jung, Liouville type theorems for p-harmonic maps, Journal of Mathematical Analysis and Applications, 342(2008), 354-360.
    Huili Liu, Seoung Dal Jung, Hypersurfaces in lightlike cone, Journal of Geometry and Physics, 58(2008), 913-922.
    Yun Yang, Huili Liu, Minimal centroaffine immersions of codimension two, Results in Mathematics, 52(2008), 423-437.
    Yanhua Yu, Huili Liu, A characterization of parabola, Bull. Korean Math. Soc. 45(2008), No. 4, 631-634.
    Huili Liu, Ruled surfaces with lightlike ruling in 3-Minkowski space, Journal of Geometry and Physics, 59(2009), 74-78.
    Huihui Meng, Huili Liu, Factorable surfaces in 3-Minkowski space, Bulletin of the Korean Mathematical Society, 46(2009), No. 1, 155-169.
    Yuan Yuan, Jinliang Zhang, Chunxiu Li, Huili Liu, Translation Surfaces in 3-D Minkowski Space, Journal of Northeastern University, 30(2009), 302-304.
    Qingxian Meng, Huili Liu, G2 Connection of Bezier Patches around a Common Corner, Proceeding of the 2009 WRI World Congress on Computer Science and Information Engineering, Los Angeles, California USA, 2009, 694-697.
    Qingxian Meng, Xinyuan Ou, Huili Liu, Best area approximation algorithm for circles with polygons, Computer Science，36(2009), No. 4A, 30-32.
    Qingxian Meng, Huili Liu, Smooth connection of Bezier triangular surfaces with a common vertex, J. of Computer-aided Design & Computer Graphics, 21(2009), No.8, 1074-1082.
    Ruoyun Qian, Huili Liu, Null Bertrand Curves in 3-D Minkowski Space, Journal of Northeastern University, 30(2009), No.7, 1058-1060.
    Fenghui Ji, Huili Liu, Helicoidal surfaces with $lH+K=c$ in 3-dimensional Minkowski space, Advances in Mathematics, 38(2009), No. 5, 579-589.
    Yun Yang, Yanhua Yu, Huili Liu, Centroaffine translation surfaces in R^3, Results in mathematics, 56(2009), 197-210.
    Huili Liu, Characterizations of ruled surfaces with lightlike ruling in Minkowski 3-space, Results in mathematics, 56(2009), 357-368.
    Yanhua Yu, Yun Yang, Huili Liu, Centroaffine ruled surfaces in R^3, J. Math. Anal. Appl., 365(2010), 683-693.
    Miektung Choi, Young Ho Kim, Huili Liu, Dae Won Yoon, Helicoidal surfaces and their Gauss map in Minkowski 3-space, Bull. Korean Math. Soc., 47(2010), No. 4, 859-881.
    Huili Liu, Masaaki Umehara, Kotaro Yamada, The duality of conformally flat manifolds, Bull. Braz. Math. Soc., New Series, 42(1)(2011), 131-152.
    Huili Liu, Qingxian Meng, Representation formulas of curves in a 2 and 3 dimensional lightlike cone, Results Math., 59(2011), 437-451.
    Yun Yang, Yanhua Yu, Huili Liu, Linear Weingarten centroaffine translation surfaces in R^3, J. Math. Anal. Appl., 375(2011), 458-466.
    Huili Liu, Representation of surfaces in 3-dimensional lightlike cone, Bull. Belg. Math. Soc. Simon Stevin, 18(2011), 737-748.
    Yuan Yuan, Huili Liu, Some New Translation Surfaces in 3-Minkowski Space, Journal of Mathematical Research & Exposition, 31(6)(2011), 1123-1128.
    Qingxian Meng, Huili Liu, Regularity of Bezier Curves, 3rd International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2011), 2011/1/6-2011/1/7, pp 877-880, Shanghai, PEOPLES R CHINA, 2011.
    Huili Liu, Yuan Yuan, Pitch functions of ruled surfaces and B-scrolls in Minkowski 3-space, Journal of Geometry and Physics, 62(2012), 47-52.
    Huili Liu, Timelike surfaces in 3-dimensional lightlike cone, Journal of Mathematical Analysis and Applications, 393(2012), 605-613.
    Seoung Dal Jung, Huili Liu, Transversal infinitesimal automorphisms on Kaehler foliations, Bulletin of the Australian Mathematical Society, 86(2012), 405-415.
    Huili Liu, Weierstrass type representation for marginally trapped surfaces in Minkowski 4-space, Mathematical Physics, Analysis and Geometry, 16(2013), 171-178.
    Huili Liu, Yanhua Yu, Affine translation surfaces in Euclidean 3-space, Proceedings of the Japan Academy, Ser. A, Mathematical Sciences, 89, Ser. A (2013), 111-113.
    Huili Liu, Curves in affine and Semi-Euclidean spaces, Results in Mathematics, 65(2014), 235-249.
    Huili Liu, Yanhua Yu, Seoung Dal Jung, Invariants of non-developable ruled surfaces in Euclidean 3-space, Beitraege zur Algebra und Geometrie, 55(2014), 189-199.
    Yanhua Yu, Huili Liu, Seoung Dal Jung, Structure and characterization of ruled surfaces in Euclidean 3-space, Applied Mathematics and Computation, 233(2014), 252-259.
    Huili Liu, Curves in Three Dimensional Riemannian Space Forms, Results in Mathematics, 66(2014), 469-480.
    Yuan Yuan, Longbiao Ma, Huili Liu, Affine Translation Surfaces in Minkowski 3D-Space, Journal of Northeastern University, 2013, Issue 10, 151-154.
    Yanhua Yu, Yun Yang, Huili Liu, Curve Characterization in 3D Affine Space, Journal of Northeastern University, 33(2012), Issue 4, 605-608.
    Yun Yang, Yanhua Yu, Huili Liu, Rotation surfaces with certain mean curvature in 3D Minkowski space, Journal of Northeastern University, 33(2012), Issue 9, 1361-1363.
    Yuan Yuan, Huili Liu, Binormal Surfaces for Space Curves, Journal of Northeastern University, 33(2012), Issue 10, 1517-1520.
    Jinhua Qian, Huili Liu, Gang Jin, Lightlike helices in Minkowski 3-space, Journal of Northeastern University, 33(2012), Issue 12, 1800-1802.
    Yun Yang, Yanhua Yu, Huili Liu, Flat centroaffine surfaces with the degenerate second fundamental form and vanishing Pick invariant in R-4, Journal of Mathematical Analysis and Applications, 397(2013), 161-171.
    Yun Yang, Yanhua Yu, Huili Liu, Centroaffine geometry of equiaffine rotation surfaces in R3, J. Math. Anal. Appl., 414(2014), 46-60.
    Yun Yang, Yanhua Yu, Huili Liu, Flat centroaffine surfaces with parallel second fundamental form in R4, Applied Mathematics and Computation, 243(2014), 775-788.
    Peng Zong, Lin Xiao, Huili Liu, Affine factorable surfaces in three dimensional Euclidean space, Acta Mathematica Sinica Chinese Series, 58(2015), No. 2, 329-336.
    Young Ho Kim, Huili Liu, Jinhua Qian, Some characterizations of canal surfaces, Bull. Korean Math. Soc., 53(2016), No.2, 461-477.
    Seoung Dal Jung, Huili Liu, Vanishing theorems of the basic harmonic forms on a complete foliated Riemannian manifold, Bulletin of the Belgian Mathematical Society, 24(2017), 153-160.
    Huili Liu, Seoung Dal Jung, Affine translation surfaces with constant mean curvature in Euclidean 3-space, J. Geom., 108(2017), 423-428.
    Huili Liu, Seoung Dal Jung, Riccati equations and cone curves in Minkowski 3-space, J. Geom., 108(2017), 623-635.
    Huili Liu, Seoung Dal Jung, Null curves and representation in three dimensional Minkowski spacetime, New Horizons in Mathematical Physics, Vol. 1, No. 1, 2017, 1-10.
    Huili Liu, Seoung Dal Jung, Structures and properties of null scroll in Minkowski 3-space, International Journal of Geometric Methods in Modern Physics, 14(2017), No. 5, 1750066(11pages).
    Seoung Dal Jung, Huili Liu, Yixuan Liu, Weingarten affine translation surfaces in Euclidean 3-space, Results in Mathematics, 72(4), 1839-1848.
    Seoung Dal Jung, Huili Liu, L2-transverse conformal Killing forms on complete foliated manifolds, Math. Z. (2017). https://doi.org/10.1007/s00209-017-1905-0.

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