金沙集团1862cc成色学术报告
Constructions of expander graphs and surfaces
沈洋
(复旦大学)
时间:2025-11-04 16:00—17:00(周二下午)
地点:沙河主楼E402
摘要:In this talk, we will review some relative results of spectrums on graphs and hyperbolic surfaces, and introduce a new model of random graphs. Based on the study of such model, we constructed a sequence of non-compact hyperbolic surfaces with uniform positive spectral gaps. This is a joint work with Qi Guo and Bobo Hua。
报告人简介:沈洋,博士毕业于清华大学数学科学系,现在复旦大学数学学院从事博士后工作,其主要从事双曲几何以及随机曲面以及谱分析的研究,相关研究成果发表在CMP, IMRN等国际期刊上。
邀请人:张旭成
欢迎大家参加!