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This article confirms boundedness of generalized Marcinkiewicz operators, indicating improved results in operator theory.
In this article, a class of rough generalized Marcinkiewicz operators is considered. Under the condition that the singular kernel belongs to the space Lq(Sn−1), the boundedness of these operators is confirmed from the space of homogeneous Triebel–Lizorkin functions to the Lp(Rd+1) space. Moreover, appropriate Lp bounds are obtained which allow us to utilize Yano’s extrapolation procedure to prove the boundedness of the aforementioned operators under weaker assumptions on the kernels. In this work, several known past results are generalized, extended, and improved.
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Mohammed Ali (2026) studied this question.
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