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Creators/Authors contains: "Airta, Emil"

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  1. ; ; (, Transactions of the American Mathematical Society)
    We develop both bilinear theory and commutator estimates in the context of entangled dilations, specifically Zygmund dilations $$(x_1, x_2, x_3) \mapsto (\delta_1 x_1, \delta_2 x_2, \delta_1 \delta_2 x_3)$$ in $$\mathbb{R}^3$$. We construct bilinear versions of recent dyadic multiresolution methods for Zygmund dilations and apply them to prove a paraproduct free $T1$ theorem for bilinear singular integrals invariant under Zygmund dilations. Independently, we prove linear commutator estimates even when the underlying singular integrals do not satisfy weighted estimates with Zygmund weights. This requires new paraproduct estimates. 
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    Free, publicly-accessible full text available April 4, 2026