報告題目:Existence of solutions with isolated singularity for a semilinear Helmholtz equation
報 告 人:周風教授
報告時間:2023年11月5日(星期日) 16:30—17:30
報告地點:5B-307
報告人簡介:
周風,華東師范大學數學科學學院教授,博士生導師,中國數學會常務理事。1993年獲得巴黎第六大學數學博士學位,師從H. Brezis教授。2004年至2012年任華東師范大學數學系系主任。入選上海市曙光計劃、上海市優秀學科帶頭人計劃,主持國家“數學創新引智”計劃。研究領域為非線性偏微分方程,主要研究幾何、數學物理中若干非線性偏微分方程解的性態及相關問題。研究成果發表在Comm. Pure Appl. Math., J. Funct. Anal., Ann. I.H.P.,Calc. Var. PDEs., J. Differential Equations等國際著名數學期刊上。
報告摘要:
In this talk, we review some basic properties for Helmholtz operator and an appropriate classification of Helmholtz harmonic functions is involved according to the asymptotic behavior at infinity. We discuss the isolated singular solutions of a semilinear Helmholtz equation. In particular, we give the classification of the isolated singularity in the Serrin's subcritical case. The isolated singular solutions is then derived via the Schauder’s fixed point theorem for the corresponding integral equation. The talk is based on joint work with H.Y. Chen.

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