100元2小时不限次数电话号码,全国空降200元快餐联系方式,24小时微信快餐妹,全国同城约资源匹配系统

报告题目：Chern-Yamabe problem and Chern-Yamabe flow

报 告 人：马力

时 间：2025年10月13日 （周一）下午15:30-16:30

地 点：国交2号楼315会议室

简 介：We first recall some basic facts about Hermitian geometry. Then we introduce the Chern-scalar curvature on a compact Hermitian manifold and consider the Chern-Yamabe problem, which is about the existence of metrics of constant Chern scalar curvature in a given conformal class of a Hermitian metric.. We review the previous results about the Chern-Yamabe problem and the Chern-Yamabe flows, We then discuss some key estimates and study the global existence and convergence of the Chern-Yamabe flows.

报告题目：Conjugate phase retreival on graphs and with applicati…

报 告 人：成诚

时 间：2025年10月9日（周四）上午10:30-12:00

地 点：国交2号楼315

简 介：Conjugate phase retrieval considers the recovery of a function, up to a unimodular constant and conjugation, from its phaseless measurements. In this talk, I will introduce the conjugate phase retrieval for complex-valued signals residing on graphs, and explore its applications to shift-invariant spaces. We first provide the sufficient condition for the conjugate phase retrieval of graph signals, construct two explicit graphs, and show that graph signals residing on them are conjugate phase retrievable. Next, we explore its applications for the signals living in the shift-invariant spaces, and study the the conjugate phase retrievable of the shift-invariant signals from the structured phaseless samples.

报告题目：On symplectic critical surfaces

报 告 人：李嘉禹

时 间：2025年9月29日（周一）上午11:00-12:00

地 点：国交二号楼315会议室

简 介：We try to use variational approch to study the existence of holomophic curves in a Kahler surface. We introduce a family of functionals L_\beta, derive the first and the second variation formula, say a surface which satisfies the Euler-Lagrange equation of L_\beta, a \beta-symplectic critical surface. We study the properties of the \beta-symplectic critical surfaces. This is a joint work with Professors Jun Sun and Xiaoli Han.