报告人：刘宏宇教授

报告题目一：Inverse problems with passive measurements and applications (I、II)

报告摘要：We are concerned with a class of inverse problems where one intends to recover certain unknown sources and/or mediums by using passive measurements. This type of inverse problems arises in a variety of cutting-edge applications including geometric body generation, photo-acoustic tomography, MAD (magnetic anomaly detection) technology, earthquake precursor detection and cosmological exploration. In this talk, I shall discuss the mathematical progress of our study including the modeling, unique identifiability, stability, and numerical reconstruction results, as well as applications.

报告时间：2023年5月7日15:00-17:30

报告地点：理学楼609

报告题目二：Spectral geometries of transmission resonances and applications (I、II)

报告摘要：Transmission eigenvalue problems are a type of non-elliptic and non-selfadjoint spectral problems. They are of central importance to wave scattering theory. Recently, several intrinsic geometric patterns of the transmission eigenfunctions were revealed. In this talk, I shall discuss these intriguing discoveries as well as the corresponding applications to invisibility cloaking, super-resolution imaging and artificial mirage.

报告时间：2023年5月8日09:00-11:30

报告地点：理学楼609

报告人简介：刘宏宇，香港城市大学数学系教授、副主任，教育部****讲座教授，福建省闽江学者讲座教授。刘宏宇教授现担任国际反问题协会秘书，香港研究资助局物理学科评议组委员等。刘宏宇教授的研究领域为应用数学和计算数学，包括数学物理中的反问题，偏微分方程，超材料和隐形，散射理论和谱理论。近年来，也开始探讨反散射与仿生学习及人工智能的交叉和结合。刘宏宇教授在上述领域取得了一系列创新性的研究成果，目前在国际高水平学术期刊发表论文 160 余篇，其中 9 篇论文被相关杂志评为年度亮点论文、特色论文或高被引论文， 出版专著 4 部，主持科研基金项目 20 余项。在国内外学术会议受邀做学术报告 160 余场。