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Related papers: $L^p-$maximal regularity on Banach spaces with a S…

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We give a negative solution to the problem of the $L^p$-maximal regularity on various classes of Banach spaces including $L^q$-spaces with $1<q \neq 2<+\infty$.

Functional Analysis · Mathematics 2007-05-23 N. J. Kalton , G. Lancien

In this paper we prove that the maximal $L^p$-regularity property on the interval $(0,T)$, $T>0$, for Cauchy problems associated with the square root of Hermite, Bessel or Laguerre type operators on $L^2(\Omega, d\mu; X),$ characterizes the…

Classical Analysis and ODEs · Mathematics 2023-10-25 Víctor Almeida , Jorge J. Betancor , Alejandro J. Castro

In this paper we show that the concept of maximal $L^p$-regularity is stable under a large class of unbounded perturbations, namely Staffans-Weiss perturbations. To that purpose, we first prove that the analyticity of semigroups is…

Functional Analysis · Mathematics 2020-03-05 A. Amansag , H. Bounit , A. Driouich , S. Hadd

The main purpose of this paper is to investigate the concept of maximal $L^p$-regularity for perturbed evolution equations in Banach spaces. We mainly consider three classes of perturbations: Miyadera-Voigt perturbations, Desch-Schappacher…

Functional Analysis · Mathematics 2018-10-23 A. Amansag , H. Bounit , A. Driouich , S. Hadd

Using methods from Banach space theory, we prove two new structural results on maximal regularity. The first says that there exist positive analytic semigroups on UMD-Banach lattices, namely $\ell_p(\ell_q)$ for $p \neq q \in (1, \infty)$,…

Functional Analysis · Mathematics 2016-04-11 Stephan Fackler

In the last decades, a lot of progress has been made on the subject of maximal regularity. The property of maximal $L^p$ regularity is an a priori estimate and reads as follows: For A the negative generator of an analytic semigroup on a…

Analysis of PDEs · Mathematics 2023-11-15 Sylvie Monniaux

In this paper we prove maximal regularity estimates in "square function spaces" which are commonly used in harmonic analysis, spectral theory, and stochastic analysis. In particular, they lead to a new class of maximal regularity results…

Functional Analysis · Mathematics 2014-11-05 Jan van Neerven , Mark Veraar , Lutz Weis

We give a new more explicit proof of a result by Kalton & Lancien stating that on each Banach space with an unconditional basis not isomorphic to a Hilbert space there exists a generator of a holomorphic semigroup which does not have…

Functional Analysis · Mathematics 2014-10-08 Stephan Fackler

We show maximal $L^p$-regularity for non-autonomous Cauchy problems provided the trace spaces are stable in some parameterized sense and the time dependence is of bounded variation. In particular, on $L^2$, we obtain for all $p \in (1,2]$…

Functional Analysis · Mathematics 2016-09-29 Stephan Fackler

The aim of this paper is to propose weak assumptions to prove maximal L^q regularity for Cauchy problem: du/dt - Lu(t)=f(t). Mainly we only require "off-diagonal" estimates on the real semigroup (e^{tL})_{t>0} to obtain maximal L^q…

Classical Analysis and ODEs · Mathematics 2009-02-17 Frédéric Bernicot , Jiman Zhao

We investigate the regularity in $L^p$ ($p>2$) of the gradient of any weak solution of a Cauchy problem with mixed Neumann-power type boundary conditions. Under suitable assumptions we prove the existence of weak solutions that satisfy…

Analysis of PDEs · Mathematics 2015-12-29 Luisa Consiglieri

We investigate $L^p$ regularity of weighted Bergman projections on the unit disc and $L^p$ regularity of ordinary Bergman projections in higher dimensions.

Complex Variables · Mathematics 2011-08-16 Yunus E. Zeytuncu

In this paper, we study Auerbach basis of the Banach spaces $l^n_p$. We provide a complete classification of the spaces in terms of the cardinality of their bases. We also give a complete description of these bases for $l^3_p$ ($l^2_p$ is…

Functional Analysis · Mathematics 2023-02-02 Arun Maiti , Debmalya Sain

We introduce the notion of a continuous Schauder frame for a Banach space. This is both a generalization of continuous frames and coherent states for Hilbert spaces and a generalization of unconditional Schauder frames for Banach spaces. As…

Functional Analysis · Mathematics 2018-12-21 Joseph Eisner , Daniel Freeman

In this work, we consider the Cauchy problem for $u' - Au = f$ with $A$ the Laplacian operator on some Riemannian manifolds or a sublapacian on some Lie groups or some second order elliptic operators on a domain. We show the boundedness of…

Classical Analysis and ODEs · Mathematics 2007-10-17 Pascal Auscher , Frédéric Bernicot , Jiman Zhao

We study maximal regularity in interpolation spaces for the sum of three closed linear operators on a Banach space, and we apply the abstract results to obtain Besov and H\"older maximal regularity for complete second order Cauchy problems…

Functional Analysis · Mathematics 2014-04-14 Charles J. K. Batty , Ralph Chill , Sachi Srivastava

Motivated from the complete solution of important $abc$-problem for Gabor system for the Hilbert space $\mathcal{L}^2(\mathbb{R})$ by Dai and Sun [\textit{Memoirs of Amer. Math. Soc., 2016}] and from the existential result of approximate…

Functional Analysis · Mathematics 2022-01-13 K. Mahesh Krishna

We solve the $L^p$-regularity problem of the Bergman projection of two-dimensional Rudin ball quotients.

Complex Variables · Mathematics 2026-02-02 Debraj Chakrabarti , Alessandro Monguzzi

Assuming $A$ has maximal $L^p$-regularity, this paper investigates perturbations of $A$ by time-dependent operators $B$ that are unbounded and satisfy a critical $L^q$-integrability condition in time. We establish two main results. The…

Functional Analysis · Mathematics 2026-02-27 Esmée Theewis , Mark Veraar

Let $L$ be an elliptic differential operator with bounded measurable coefficients, acting in Bochner spaces $L^{p}(R^{n};X)$ of $X$-valued functions on $R^n$. We characterize Kato's square root estimates $\|\sqrt{L}u\|_{p} \eqsim \|\nabla…

Functional Analysis · Mathematics 2007-05-23 Tuomas Hytonen , Alan McIntosh , Pierre Portal
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