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Endpoint $L^1$ estimates for Hodge systems

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 نشر من قبل Daniel Spector
 تاريخ النشر 2021
  مجال البحث
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In this paper we give a simple proof of the endpoint Besov-Lorentz estimate $$ |I_alpha F|_{dot{B}^{0,1}_{d/(d-alpha),1}(mathbb{R}^d;mathbb{R}^k)} leq C |F |_{L^1(mathbb{R}^d;mathbb{R}^k)} $$ for all $F in L^1(mathbb{R}^d;mathbb{R}^k)$ which satisfy a first order cocancelling differential constraint. We show how this implies endpoint Besov-Lorentz estimates for Hodge systems with $L^1$ data via fractional integration for exterior derivatives.

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