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学术报告：Instability analysis and regularization approximation to the forward/backward problems for fractional damped wave equations with random noise equations with random noise
2025-10-29
报告人：宋泽芳副教授报告时间：2025年10月30日上午10:00腾讯会议号：651-761-652报告摘要：Considered herein is the forward/backward problems for fractional damped wave equations  subject to the random Gaussian white noise initial and final data. Construct the mild solutions to forward/backward problems under all cases for parameters, and then investigate their stability and instability properties...
学术报告：Empirical likelihood for probability density functions under strong mixing high-frequency data
2025-10-29
报告人：李英华教授报告时间：2025年10月30日上午8：00腾讯会议号：651-761-652报告摘要：Construct the empirical likelihood ratio statistic for a probability density function with strong mixing high-frequency data, and show that the empirical likelihood ratio statistic is asymptotically Chi Square-type distributed, which is used to obtain an empirical likelihood based confidence interval for ...
学术报告：Anti-Ramsey number of intersecting cliques
2025-10-27
报告人：鲁红亮教授报告时间：2025年10月30日下午15:00腾讯会议号：545-333-670 报告摘要：An edge-colored graph is calledrainbow graphif all the colors on its edges are distinct. Given a positive integer nand a graph G, the anti-Ramsey number ar(n,G) is defined to be the minimum number of colors rsuch that there exists a rainbow copy of Gin any exactly r-edge-coloring of K_n. Let F_{k,r} denote the gra...
学术报告：Ramsey numbers of books versus cycles
2025-10-27
报告人：彭兴教授报告时间：2025年10月28日上午9:30腾讯会议号：747-684-239报告摘要：Given positive integers n and k, a k-book with npages is a graph which consists of ncopies of cliques with k+1vertices sharing a common k-clique. In this talk, I will survey our recent results on Ramsey numbers of books and cycles.报告人简介：彭兴，安徽大学数学科学学院教授，博士生导师，主要研究方向为极值图论和随机图论...
学术报告：Trainability and Generalization in Quantum Neural Networks
2025-09-28
报告人：朱成鸿报告时间：2025年10月7日16：00-16：40报告地点：数学与信息学院715报告摘要：Quantum neural networks (QNNs) promise near-term quantum advantage, yet they face connected obstacles in learning, trainability, and generalization. We show that, even with high-quality initial states, QNNs almost surely fall into unfavorable local minima once the loss dips below a critical value; the escape pro...
学术报告： Symmetric quantum joint measurements on multiple qubits
2025-09-25
报告人：闫凤利教授报告时间：2025年10月3日上午10：50-11：30报告地点：数学与信息学院报告厅201报告摘要：We investigate the generalization of symmetric quantum joint measurements on multiple qubits. We first describe a method for constructing a symmetric joint measurement basis for three qubits by utilizing single-qubit states corresponding to the four vertices of an isohedral tetrahedron on the Bloch...
学术报告：Entanglement hierarchies in multipartite scenarios
2025-09-25
报告人：高亭教授报告时间：2025年10月3日上午10：00-10：40报告地点：数学与信息学院报告厅201报告摘要：We investigate the hierarchical structure of the n-partite quantum states. We present several types of parameterized multipartite entanglement measures. Rigorous proofs show that the proposed k-nonseparable measures satisfy all the requirements for being an entanglement measure including the entangle...
我院将举办中国计算机学会计算机视觉专委会走进高校系列报告会
2025-09-25
学术报告：Ground States of Mass Subcritical Fermi Systems with Attractive Interactions
2025-09-22
报告人：郭玉劲教授报告时间：2025年9月23日上午10:00-12:30报告地点：腾讯会议405 944 777报告摘要：It is well known that almost all elementary quantum many-body particles in nature are divided fundamentally into two classes, i.e., bosons and fermions, in terms of the spin quantum numbers. Ground states of quantum bosons were investigated widely over the past few decades. In this talk we focus on groun...
学术报告：Positive solutions for critical p-Laplacian equation with critical Neumann boundary condition
2025-09-15
学术报告：Ground state for a logarithmic Schrodinger-Poisson system
2025-09-08
报告人：王征平 教授报告时间：2025年9月10日上午9：30-12:30报告地点：腾讯会议188-706-920报告摘要：In this talk, we give some recent results on the three dimensional logarithmic Schrodinger-Poisson system with coercive potential. Under some technical conditions on the potential, by using variational methods we investigate the existence, asymptotic behavior and radial symmetry of ground state. 报...
学术报告：Bifurcations at infinity in general 3D piecewise-smooth quadratic vector fields
2025-07-10
报告人：刘永建教授报告时间：2025年7月15日上午10:00-11:00报告地点：数学与信息学院数学系715室报告摘要：Research on bifurcations at infinity in three-dimensional piecewise-smooth nonlinear vector fields remains scarce in the existing literature. This paper aims to bridge this gap by investigating bifurcations at infinity in general 3D piecewise-smooth quadratic vector fields. We derive the expression...
学术报告：随机激励下非光滑系统全局动力学Melnikov方法研究
2025-07-10
报告人：魏周超  教授报告时间：2025年7月15日上午11:00-12:00，数学系715室报告地点：数学与信息学院数学系715室报告摘要：将经典同宿与异宿Melnikov方法分别推广到了三类具有脉冲效应和噪声激励的混合分段光滑系统中，发展了相应全局分岔与混沌动力学的随机非光滑Melnikov理论，探究了其混沌产生准则与机理，并应用于船舶横摇、混沌倾覆与抑制等相关问题。报告人简介：魏周超，中国地质大学(武汉)数学与物理学院教授，博士...
Stab-GKnock: controlled variable selection for partially linear models using generalized knockoffs
2025-06-25
报告人:李高荣报告时间：2025年6月30日下午15:00报告地点：数学与信息学院201报告厅报告摘要:The recently proposed fixed-X knockoff is a powerful variable selection procedure that controls the false discovery rate (FDR) in any finite-sample setting, yet its theoretical insights are difficult to show beyond Gaussian linear models. In this paper, we make the first attempt to extend the fixed-X knockoff to...
学术报告：Hypothesis Testing in Varying Coefficient Models Based on the Multiplier Bootstrap
2025-06-16
报告人：宋晓军报告时间：2025年6月26日（周四）上午10:00报告地点：数学与信息学院201报告厅报告摘要:Varying coefficient models provide a robust and practical framework while balancing flexibility and simplicity. This study discusses a series of hypothesis testing problems in varying coefficient models, including a constancy test, a significance test, and a partial constancy test. The null hypotheses a...
学术报告：算力优化前沿研究—共筑高效算力生态
2025-05-21
学术报告：雾计算中的计算卸载：一种组合优化方法
2025-05-21
报告题目 ：可搜索对称加密及其攻击（Searchable Symmetric Encryption and Its Attacks）
2025-04-17
学术报告通知时间：2025年4月19日（星期六）15:00地点：数学与信息学院东楼520会议室主讲人：梁开泰教授（荷兰代尔夫特大学终身教授）报告摘要：可搜索对称加密（SSE）是一种允许用户在加密数据库上委托关键词搜索的技术，其核心目标是保障关键词与加密文档的机密性。本报告将深入解析SSE的基础概念、运行机制及安全模型，并探讨当前针对SSE的实际攻击案例，以揭示该技术的优势与局限性。最后，报告将展望SSE在现实应用中的开放性...
学术报告：Asymptotics for Pricing European Derivatives
2025-04-14
报告人：Jiling Cao （曹继岭）报告时间：2025 年 4 月 18  日下午 16:00报告地点：数学与信息（软件）学院 201 报告厅报告摘要：Volatility modeling is a cornerstone of modern quantitative finance, especially when it comes to pricing European derivatives accurately. The Heston model, introduced by S.Heston in 1993, revolutionized the field by addressing a key limitation of the Black-Scholes...
学术报告：Kähler-Finsler manifolds with positive curvatures
2025-04-14
报告人：邱春晖报告时间：2025年4月18日上午10:00报告地点：数学与信息（软件）学院 201 报告厅报告摘要: In this talk, we will study Kähler-Finsler manifolds with  positive curvatures. We initially establish  a relationship between the holomorphic bisectional curvature and horizontal flag curvature. Utilizing this observation along with the complex second variation formula, we demons...