Results 81 to 90 of about 2,466 (181)

Double ball property: an overview and the case of step two Carnot groups

open access: yesBruno Pini Mathematical Analysis Seminar, 2012
We investigate the notion of the so-called Double Ball Property, which concerns the nonnegative sub-solutions of some differential operators. Thanks to the axiomatic approach developed in [6], this is an important tool in order to solve the Krylov ...
Giulio Tralli
doaj  

Infinite-Dimensional Carnot Groups and Gâteaux Differentiability

open access: yesThe Journal of Geometric Analysis, 2019
The article under review contributes to research based around Rademacher's theorem, which states that a Lipschitz mapping between two Euclidean spaces is differentiable almost everywhere with respect to the Lebesgue measure. More specifically, the article joins a flourishing branch of research which has the broad aim of extending Rademacher's theorem ...
Le Donne E., Li S., Moisala T.
openaire   +1 more source

A remark on quasiconformal mappings on Carnot groups.

open access: yesMichigan Mathematical Journal, 1994
A. Koranyi and M. Reimann informed me that a result of theirs on the theory of quasiconformal mappings on the Heisenberg groups contradicted inequality (20.17) in my monograph [Strong rigidity of locally symmetric spaces, Ann. Math. Studies, No.
openaire   +3 more sources

Morrey estimates for subelliptic p-Laplace type systems with VMO coefficients in Carnot groups

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we study estimates in Morrey spaces to the horizontal gradient of weak solutions for a class of quasilinear sub-elliptic systems of p-Laplace type with VMO coefficients under the controllable growth over Carnot group if p is not too
Haiyan Yu, Shenzhou Zheng
doaj  

A unified approach to L p $L^{p}$ Hardy and Rellich-type inequalities in Euclidean and non-Euclidean settings

open access: yesJournal of Inequalities and Applications
We present a unified and concise method for establishing L p $L^{p}$ Hardy and Rellich inequalities for a broad class of subelliptic operators of divergence type.
Lorenzo D’Arca
doaj   +1 more source

Local Monotonicity and Isoperimetric Inequality on Hypersurfaces in Carnot groups

open access: yesBruno Pini Mathematical Analysis Seminar, 2010
Let G be a k-step Carnot group of homogeneous dimension Q. Later on we shall present some of the results recently obtained in [32] and, in particular, an intrinsic isoperimetric inequality for a C2-smooth compact hypersurface S with boundary @S.
Francesco Paolo Montefalcone
doaj  

Jean-Marie Souriau’s Symplectic Foliation Model of Sadi Carnot’s Thermodynamics

open access: yesEntropy
The explanation of thermodynamics through geometric models was initiated by seminal figures such as Carnot, Gibbs, Duhem, Reeb, and Carathéodory. Only recently, however, has the symplectic foliation model, introduced within the domain of geometric ...
Frédéric Barbaresco
doaj   +1 more source

Optimizing a machine learning design of dielectric properties in lead-free piezoelectric ceramics

open access: yesMaterials & Design
Designing lead-free piezoelectric ceramics with tailored electrical properties remains a critical challenge for various applications. In this paper we present a novel methodology integrating Machine Learning (ML) and optimization procedures to fine-tune ...
Helder R.O. Rocha   +6 more
doaj   +1 more source

The p-Laplace equation in a class of Hormander vector fields

open access: yesElectronic Journal of Differential Equations, 2019
We find the fundamental solution to the p-Laplace equation in a class of Hormander vector fields that generate neither a Carnot group nor a Grushin-type space. The singularity occurs at the sub-Riemannian points, which naturally corresponds to finding
Thomas Bieske, Robert D. Freeman
doaj  

Performance of plant-produced RBDs as SARS-CoV-2 diagnostic reagents: a tale of two plant platforms

open access: yesFrontiers in Plant Science
The COVID-19 pandemic has underscored the need for rapid and cost-effective diagnostic tools. Serological tests, particularly those measuring antibodies targeting the receptor-binding domain (RBD) of the virus, play a pivotal role in tracking infection ...
Mattia Santoni   +14 more
doaj   +1 more source

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