Results 101 to 110 of about 3,104 (212)

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 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

Measure contraction properties of Carnot groups

open access: yes, 2016
International audienceWe prove that any corank 1 Carnot group of dimension k + 1 equipped with a left-invariant measure satisfies the MCP(K, N) if and only if K ≤ 0 and N ≥ k + 3. This generalizes the well known result by Juillet for the Heisenberg group
Rizzi, L., Rizzi, Luca
core   +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  

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

Geometric inequalities in Carnot groups

open access: yes, 2012
Let G be a sub-Riemannian k-step Carnot group of homogeneous dimension Q. In this paper, we shall prove several geometric inequalities concerning smooth hypersurfaces (i.e.
MONTEFALCONE, FRANCESCOPAOLO   +1 more
core   +1 more source

A note on the inverse maximum principle on Carnot groups [PDF]

open access: yes
Let ΔG be a sublaplacian on a Carnot group, and let μ be a local measure on the open set Ω ⊂ G. If u ∈ L1l oc(Ω) is such that −ΔGu = μ, u ≥ 0 on Ω, then μc ≥ 0, where μc is the concentrated component of μ with respect to the G-capacity.
Gallo, Marco   +3 more
core   +2 more sources

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

Sharp measure contraction property for generalized H-type Carnot groups

open access: yes, 2018
International audienceWe prove that H-type Carnot groups of rank k and dimension n satisfy the MCP(K, N) if and only if K ≤ 0 and N ≥ k + 3(n − k). The latter integer coincides with the geodesic dimension of the Carnot group.
Rizzi, L.   +7 more
core   +1 more source

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