Výsledky vyhledávání

Regularity and Neumann problems for operators with real coefficients satisfying Carleson condition

Autor: Martin Dindoš, Steve Hofmann, Jill Pipher

Publikováno v: Dindos, M, Hofmann, S & Pipher, J 2023, ' Regularity and Neumann Problems for Operators with Real Coefficients Satisfying Carleson Conditions ', Journal of functional analysis, vol. 285, no. 6, 110024 . https://doi.org/10.1016/j.jfa.2023.110024

In this paper, we continue the study of a class of second order elliptic operators of the form $\mathcal L=\mbox{div}(A\nabla\cdot)$ in a domain above a Lipschitz graph in $\mathbb R^n,$ where the coefficients of the matrix $A$ satisfy a Carleson mea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a99ccda0dfde870223afa2fc6ea0ae8f
http://arxiv.org/abs/2207.10366

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Modular lattice signatures, revisited

Autor: William Whyte, Jill Pipher, Dipayan Das, Jeffrey Hoffstein, Zhenfei Zhang

Publikováno v: Designs, Codes and Cryptography. 88:505-532

In this paper we revisit the modular lattice signature scheme and its efficient instantiation known as pqNTRUSign. First, we show that a modular lattice signature scheme can be based on a standard lattice problem. The fundamental problem that needs t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69ee7689da50e0ceb908325d8e9106e5
https://doi.org/10.1007/s10623-019-00694-x

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Commutators of multiparameter flag singular integrals and applications

Autor: Yumeng Ou, Jill Pipher, Brett D. Wick, Ji Li, Xuan Thinh Duong

Publikováno v: Anal. PDE 12, no. 5 (2019), 1325-1355

We introduce the iterated commutator for the Riesz transforms in the multi-parameter flag setting, and prove the upper bound of this commutator with respect to the symbol $b$ in the flag BMO space. Our methods require the techniques of semigroups, ha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27913897a3747ec31d5391bba35bb72d
https://doi.org/10.2140/apde.2019.12.1325

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Extrapolation of the Dirichlet problem for elliptic equations with complex coefficients

Autor: Jill Pipher, Martin Dindoš

Publikováno v: Dindos, M & Pipher, J 2020, ' Extrapolation of the Dirichlet problem for elliptic equations with complex coefficients ', Journal of functional analysis, vol. 279, no. 7, 108693 . https://doi.org/10.1016/j.jfa.2020.108693

In this paper, we prove an extrapolation result for complex coefficient divergence form operators that satisfy a strong ellipticity condition known as $p$-{\it ellipticity}. Specifically, let $\Omega$ be a chord-arc domain in $\mathbb R^n$ and the op

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f921fba73d69418d30efde441ebcc2d3
https://hdl.handle.net/20.500.11820/ef7e8cc3-7d90-4b48-9487-5bacc8810e9f

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