A compact extension of Journé's T1 theorem on product spaces

分析学研讨班

题目：A compact extension of Journé’s T1 theorem on product spaces

主讲人:曹明明(西班牙国家科学院数学科学研究所）

时间:2023年8月30日（周三），14:30-16:00

线下地点：明德楼B区201-1报告厅

线上链接：Zoom ID: 949 5369 0376(Password: 388814))

摘要:In the 1980s, David and Journé proved the original $T1$theorem, which gave a characterization of the $L^2$boundedness for Calderón–Zygmund operators based on testing conditions. Soon after, using the vector-valued Calderón–Zygmund theory, Journé first established a bi-parameter $T1$theorem. However, the $T1$theorem to deduce compactness of multi-parameter singular integrals has been open in the last several years. The purpose of this talk is to develop a general theory of the compactness for a class of bi-parameter singular integrals.

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