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math.CA2026
Sparse bounds for rough non-translation-invariant Calderón-Zygmund operators
Yanping Chen, Teng Wang
In this paper, we establish sparse bounds for singular integral operators with rough non-translation-invariant Calderón-Zygmund kernels. Our approach verifies the localized hypothe…
math.AP2026
-boundedness of Riesz transforms and spectral multipliers of Schrödinger operators
El Maati Ouhabaz
Let $\LL = -Δ+ V$ be a Schrödinger operator with a non-negative potential. It is known that its associated Riesz transform $\nabla \LL^{-\sfrac{1}{2}}$ is bounded on $L^p(\RR^d)$ f…