報(bào)告題目:Maximal operators associated to hypersurfaces in R^3
報(bào)告人:德國(guó)基爾大學(xué)Stefan Buschenhenke博士
時(shí)間:2019年9月4日(星期三)上午10:30-11:30
地點(diǎn):長(zhǎng)安校區(qū)啟翔樓357會(huì)議室
邀請(qǐng)人:李文娟、宋曼利
報(bào)告摘要:We discuss L^p bounds for maximal operators associated to two-dimensional surfaces in R^n and present an overview on recent results. In certain cases, depending on the so-called height and on the number of vanishing principal curvatures, this leads to the study of a certain class of Fourier multipliers, which behave similar to cone multipliers, but are intertwined with an oscillatory Fourier integral operator. We discuss properties, bounds and conjectures for this new class of operators. The conjectured L^4 bound seems to be of similar difficulty as for the cone multiplier, but we can prove a analogus result for a lower-dimensional multiplier. This is joint work with Spyros Dendrinos, Isroil Ikromov and Detlef Müller.
報(bào)告人簡(jiǎn)介:Stefan Buschenhenke博士于2014年4月畢業(yè)于德國(guó)基爾大學(xué)。2014年5月-10月在西班牙數(shù)學(xué)研究所Instituto de Ciencias Mathematicas做博士后;2014年10月-2016年9月在德國(guó)基爾大學(xué)做博士后;2016年9月-2018年3月在英國(guó)伯明翰大學(xué)做博士后;2018年4月至今在德國(guó)基爾大學(xué)做博士后。他一直潛心鉆研調(diào)和分析四大猜想方面的問(wèn)題,如限制性定理和與曲面相關(guān)的極大函數(shù)等,目前與眾多著名調(diào)和分析專(zhuān)家A. Vargas, D. Mueller, J. Bennett, M. Cowling,I. Ikoromov合作著有十余篇與其相關(guān)的論文,發(fā)表在如J. Diff. Equal.等著名期刊上。