Characterization for Campanato norm via quasi-Banach function spaces not assuming the Fatou property

2025/10/02 by Naoya Hatano, Hatano, Naoya
#math.FA

paper · pdf · doi:10.48550/arxiv.2510.01653

Abstract

It is well known that the BMO and Campanato norms can be characterized using the L^p-average. These characterizations were later generalized to averages taken over various types of function spaces. In particular, generalizations using Banach function spaces were provided by Ho, Izuki, Noi, and Sawano. In this paper, as a further generalization, we provide similar characterizations using quasi-Banach function spaces that do not assume the Fatou property. Note that the duality argument is not available in this setting.

Citations

• On the solutions of quasi-linear elliptic partial differential equations

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