Abstract
This paper is concerned with the boundedness of trace and extension operators for Besov spaces and Triebel–Lizorkin spaces with variable exponents on the upper half space \({\mathbb R}^n_+\). To define trace and extension operators, we introduce a quarkonial decomposition for Besov spaces and Triebel–Lizorkin spaces with variable exponents on \({\mathbb R}^n\). We then study the continuity of such operators related to \({\mathbb R}^n_+\).
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Acknowledgments
The author would like to express my gratitude to Professor Yoshikazu Kobayashi for his reading this manuscript carefully and appropriate advice. The author also would like to express my gratitude to Professor Yoshihiro Sawano for sending his book [29]. The author obtained many ideas from the book [29]. The author is thankful to anonymous reviewers for their careful reading of this paper and their comments.
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Noi, T. Trace and extension operators for Besov spaces and Triebel–Lizorkin spaces with variable exponents. Rev Mat Complut 29, 341–404 (2016). https://doi.org/10.1007/s13163-016-0191-4
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DOI: https://doi.org/10.1007/s13163-016-0191-4
Keywords
- Besov space
- Triebel-Lizorkin space
- Variable exponents
- Quarkonial decomposition
- Trace operator
- Extension operator