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16

2018-05

Transition threshold for the 3-D Couette flow

报告人：章志飞教授北京大学数学科学学院报告时间： 2018年5月19日上午 10:10-11:10 报告地点：工商管理楼200-9 报告题目：Transition threshold for the 3-D Couette flow报告摘要：Beginning with Reynolds's famous paper in 1883, the stability and transition to turbulence of the laminar flows at high Reynolds number has been an important and active field in the fluid mechanics.&...

16

2018-05

求是数学前沿论坛之陈木法院士题为“从对称矩阵谈起”的公众演讲

09

2018-05

Cluster exchange groupoids and framed quadratic differentials

A Series of Talks in Cluster Theory Speaker: Dr. Yu Qiu (The Chinese University of Hong Kong) (II). Cluster exchange groupoids and framed quadratic differentials Abstract: We introduce cluster exchange groupoids, whose points groups give the generalized braid groups--the cluster braid groups. As application, we construct spaces of framed quadratic differentials on de...

09

2018-05

Social Robot and Machine Learning

报告人：张居正博士报告题目: Social Robot and Machine Learning报告时间：2018年5月17日19:00-20:00地点：工商管理楼4楼会议厅摘要:As the new era of the personal humanoid robot is coming, a social robot can become a capable assistant, knowledgeable tutor, considerate doc...

09

2018-05

Planning under uncertainty in robotics: theory to practice, and serial to parallel

报告人：蔡盼盼博士报告题目: Planning under uncertainty in robotics: theory to practice, and serial to parallel 报告时间：2018年5月17日18:00-19:00地点：工商管理楼4楼会议厅摘要:Planning under uncertainty is critical for robust robot performance in uncertain, dynamic environmen...

09

2018-05

On discrete Wigner transforms

报告人：蔡振宁博士，助理教授报告题目: On discrete Wigner transforms 报告时间：2018年5月16日18:00-19:00地点：工商管理楼4楼会议厅摘要:we derive a discrete analog of the Wigner transform over the Hilbert space for many-body quantum systems with finite number of state...

09

2018-05

Topological type Fukaya categories and Calabi-Yau/Cluster categories

A Series of Talks in Cluster Theory Speaker: Dr. Yu Qiu (The Chinese University of Hong Kong) (I). Topological type Fukaya categories and Calabi-Yau/Cluster categories. Abstract: We introduce Calabi-Yau-X categories of quivers with superpotential from surfaces and show that their cluster categories are topological Fukaya categories. We also survey various topological type Fukaya...

09

2018-05

几何分析讨论班（七）

题目：Gradient estimates for harmonic functions and heat kernels报告人：蒋仁进教授（天津大学）时间：5月14日（周一） 10：30-11：30地点：工商楼4楼报告厅摘要：In this talk, I will present some recent result on gradient estimates for harmonic functions and heat kernels. First I will discuss some motivations arising from PDEs，especially geometric analysis of metric measure spaces, and recall som...

09

2018-05

Energy stable scheme for gradient flows

报告人：杨将博士，副教授报告题目: Energy stable scheme for gradient flows报告时间：2018年5月11日15:30-16:30地点：工商管理楼4楼会议厅摘要: We propose a new technique dealing with nonlinear terms in thenumerical schemes of gradient flows. By introducing a scalar auxiliar...

09

2018-05

Intriguing sets in distance regular graphs

Title: Intriguing sets in distance regular graphsSpeaker: Stefaan de Winter (Associate Professor, Michigan State University)Time: 10:00-11:00, Tuesday, May 8, 2018 Venue: 200-9, Sir Run Run Shaw Business Building, Yuquan CampusAbstract: Tight sets were originally introduced in the 80s as special point sets in certain geometries. A slight generalization was introduced in the early 2000s,...

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