Hytönen–Lacey mixed ApA_p–A∞A_\infty estimate with one supremum

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Let 1<p<finfty1<p<finfty, let TT be a Calderon-Zygmund operator, and let wotinApw otin A_p. Write p′=p/(p−1)p'=p/(p-1) and let σ=w−1/(p−1)\sigma=w^{-1/(p-1)} be the dual weight. For mixed constants, [w](Ap)a(A∞)b[w]_{(A_p)^a(A_\infty)^b} denotes the corresponding one-supremum mixed ApA_p-A∞A_\infty characteristic. Hytoten-Lacey conjecture. One should have

∥T∥Lp(w)≲[w](Ap)1p(A∞)1p′+[σ](Ap′)1p′(A∞)1p.\|T\|_{L^p(w)}\lesssim [w]_{(A_p)^{\frac{1}{p}}(A_\infty)^{\frac{1}{p'}}}+[\sigma]_{(A_{p'})^{\frac{1}{p'}}(A_\infty)^{\frac{1}{p}}}.

The conjecture seeks a one-supremum mixed estimate improving the earlier mixed bounds. The paper gives only partial results, with additional logarithmic factors, and does not settle whether those factors are necessary.

References

Primary source

Andrei K. Lerner and Kabe Moen, “Mixed A_p-A_estimates with one supremum”, arXiv:1212.0571 (2013).

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