个人简介
主要从事材料力学和几何学中偏微分方程理论研究。在复合材料中的Babuska问题、Monge-Ampere方程外Dirichlet问题等方面做出系列结果,在《Adv.Math.》(2篇)、《Arch. Ration. Mech. Anal.》(2篇)、《J. Math. Pures Appl.》(独立)、《Trans. Amer. Math. Soc.》、《Calc. Var. Partial Differential Equations》(2篇)、《SIAM J.Math. Anal.》(3篇)、《J. Differential Equations》等SCI国际主流数学杂志上发表科研论文30余篇。
主要经历
先后应邀访问美国布朗大学、普渡大学、罗格斯大学、新加坡国立大学、法国格勒诺贝尔大学傅立叶研究所、香港浸会大学等
教学工作
主要讲授《泛函分析》、《偏微分方程》、《偏微分方程选讲》等本科生课程和 《偏微分方程基础》、《椭圆方程》等研究生课程
研究领域
主要研究来自材料力学和几何学中的线性和非线性偏微分方程理论,非线性分析,极小曲面,变分理论,几何测度论,以及复合材料中的反问题
近期论文
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复合材料中的Lame方程组解的梯度估计,系统建立了复合材料中应力集中现象的数学机制。
Li, Haigang Lower bounds of gradient's blow-up for the Lamé system with partially infinite coefficients. J. Math. Pures Appl. (9) 149 (2021), 98–134.
Chen, Yu; Li, Haigang Estimates and asymptotics for the stress concentration between closely spaced stiff C^{1,γ} inclusions in linear elasticity. J. Funct. Anal. 281 (2021), no. 2, Paper No. 109038, 63 pp.
Optimal estimates for the conductivity problem by Green's function method. (w/ Hongjie Dong), Arch. Ration. Mech. Anal. 231 (2019), no. 3, 1427–1453.
Gradient estimates for solutions of the Lamé system with partially infinite coefficients in dimensions greater than two (w/ Jiguang Bao and Yanyan Li), Adv. Math. 305 (2017), 298–338.
Gradient estimates for solutions of the Lam\'{e} system with partially infinite coefficients (w/ Jiguang Bao and Yanyan Li), Arch. Ration. Mech. Anal. 215 (2015), no. 1, 307-351.
完全非线性方程与几何分析,主要关注外区域上解的渐近性与存在性。
Jiang, Tangyu; Li, Haigang; Li, Xiaoliang On the exterior Dirichlet problem for a class of fully nonlinear elliptic equations. Calc. Var. Partial Differential Equations 60 (2021), no. 1, Paper No. 17, 20 pp.
Monge–Ampère equation on exterior domains (w/ Jiguang Bao and Lei Zhang), Calc. Var. Partial Differential Equations 52 (2015), no. 1-2, 39–63.
On the exterior Dirichlet problem for Hessian equations (w/ Jiguang Bao and Yanyan Li), Trans. Amer. Math. Soc. 366 (2014), no. 12, 6183–6200.