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On compactness results of Lions–Peetre type for bilinear operators
Nonlinear Analysis ( IF 1.3 ) Pub Date : 2020-05-14 , DOI: 10.1016/j.na.2020.111951 Fernando Cobos , Luz M. Fernández-Cabrera , Antón Martínez
中文翻译:
关于双线性算子的Lions–Peetre型紧致性结果
更新日期:2020-05-14
Nonlinear Analysis ( IF 1.3 ) Pub Date : 2020-05-14 , DOI: 10.1016/j.na.2020.111951 Fernando Cobos , Luz M. Fernández-Cabrera , Antón Martínez
Let , be Banach couples, let be a Banach space and let be a bilinear operator such that for , , If compactly for or 1, we show that may be uniquely extended to a compact bilinear operator from the complex interpolation spaces generated by and to . Furthermore, the corresponding result for the real method is given and we also study the case when is replaced by a couple of Banach function spaces on the same measure space.
中文翻译:
关于双线性算子的Lions–Peetre型紧致性结果
让 , 成为巴纳赫夫妇,让 成为一个Banach空间,让 是双线性算子 对于 , , 如果 紧凑地 或1,我们证明 可以从由生成的复杂插值空间唯一地扩展为紧致双线性算子 和 至 。此外,给出了实际方法的相应结果,我们还研究了当 被一对夫妇取代 同一度量空间上的Banach函数空间的组合。