讲座题目1:On Eells-Sampson type theorems for subellipitic harmonic maps
报告人: 东瑜昕
讲座时间:09:00
报告地点:腾讯会议(ID:935 103 616)
讲座内容简介:
In this talk, we discuss critical maps of a horizontal energy functional for maps from a sub-Riemannian manifold to a Riemannian manifold. These critical maps are referred to as subelliptic harmonic maps. In terms of the subelliptic harmonic map heat flow, we investigate the existence problem for subelliptic harmonic maps. Under the assumption that the target Riemannian manifold has non-positive sectional curvature, we are able to establish some Eells-Sampson type existence results, and also some Hartman type results for the flow.
讲座人简介:
东瑜昕,复旦大学数学科学学院教授,博士生导师,主要研究领域为整体微分几何、复几何与CR几何。1990年在浙江大学获得博士学位,导师为著名数学家白正国教授与沈一兵教授;1990-2000年在浙江大学数学系任教,2000年至今在复旦大学bv1946伟德任教。主持多项国家自然科学基金项目,在PLMS, JGP, JGA, CMP等一流数学期刊发表40余篇高水平学术研究论文。
讲座题目2:Topics in Ulam floating functions
报告人: 张宁
讲座时间:15:00
报告地点:bv1946伟德学术交流厅(文津楼3211)
讲座内容简介:
In this talk, we will present a recent work about the Ulam floating functions. The Ulam floating functions are generated from the Ulam body from convex geometry, which gives a definition of functional affine surface area and builds a connection to the affine surface area of unbounded convex surface.
讲座人简介:
张宁,华中科技大学副研究员,博士生导师。2017年毕业于加拿大阿尔伯塔大学获博士学位,美国国家数学科学研究所博士后,肯特州立大学博士后。主要研究领域涵盖凸几何、几何分析、黎曼几何和概率相关方向。部分成果发表在Trans. Amer. Math. Soc., J. Func. Anal., CVPDE等学术期刊上。