Results 31 to 40 of about 14,687 (238)

Regularity for quasilinear PDEs in Carnot groups via Riemannian approximation

open access: yesBruno Pini Mathematical Analysis Seminar, 2020
We study the interior regularity of weak solutions to subelliptic quasilinear PDEs in Carnot groups of the formΣi=1m1Xi (Φ(|∇Hu|2)Xiu) = 0. Here ∇Hu = (X1u,...,Xmiu) is the horizontal gradient, δ > 0 and the exponent p ∈ [2, p*), where p* depends on ...
András Domokos, Juan J. Manfredi
doaj   +1 more source

On criticality coupled sub-Laplacian systems with Hardy type potentials on Stratified Lie groups

open access: yesCommunications in Analysis and Mechanics, 2023
In this work, our main concern is to study the existence and multiplicity of solutions for the following sub-elliptic system with Hardy type potentials and multiple critical exponents on Carnot group $ \begin{equation*} \left\{\begin{aligned} & ...
Jinguo Zhang , Shuhai Zhu
doaj   +1 more source

Jet spaces over Carnot groups

open access: yesRevista Matemática Iberoamericana, 2023
Jet spaces over \mathbb{R}^n have been shown to have a canonical structure of stratified Lie groups (also known as Carnot groups). We construct jet spaces over stratified Lie groups adapted to horizontal differentiation and show that these jet spaces are themselves stratified Lie groups.
Warhurst   +2 more
openaire   +2 more sources

Differentiability and ApproximateDifferentiability for Intrinsic LipschitzFunctions in Carnot Groups and a RademacherTheorem

open access: yesAnalysis and Geometry in Metric Spaces, 2014
A Carnot group G is a connected, simply connected, nilpotent Lie group with stratified Lie algebra.We study intrinsic Lipschitz graphs and intrinsic differentiable graphs within Carnot groups.
Franchi Bruno   +2 more
doaj   +1 more source

The Traveling Salesman Theorem in Carnot groups [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2018
Let $\mathbb{G}$ be any Carnot group. We prove that, if a subset of $\mathbb{G}$ is contained in a rectifiable curve, then it satisfies Peter Jones' geometric lemma with some natural modifications. We thus prove one direction of the Traveling Salesman Theorem in $\mathbb{G}$.
Chousionis, Vasilis   +2 more
openaire   +3 more sources

Pliability, or the whitney extension theorem for curves in carnot groups [PDF]

open access: yes, 2016
The Whitney extension theorem is a classical result in analysis giving a necessary and sufficient condition for a function defined on a closed set to be extendable to the whole space with a given class of regularity.
Juillet, Nicolas, Sigalotti, Mario
core   +5 more sources

About coincidence points theorems on 2-step Carnot groups with 1-dimensional centre equipped with Box-quasimetrics

open access: yesAIMS Mathematics, 2023
For some class of 2-step Carnot groups $ D_n $ with 1-dimensional centre we find the exact values of the constants in $ (1, q_2) $-generalized triangle inequality for their $ \text{Box} $-quasimetrics $ \rho_{\text{Box}_{D_n}} $. Using this result we get
Alexander Greshnov, Vladimir Potapov
doaj   +1 more source

Approximations of Sobolev norms in Carnot groups [PDF]

open access: yes, 2010
This paper deals with a notion of Sobolev space $W^{1,p}$ introduced by J.Bourgain, H.Brezis and P.Mironescu by means of a seminorm involving local averages of finite differences. This seminorm was subsequently used by A.Ponce to obtain a Poincar\'e-type
Adams R.   +14 more
core   +1 more source

Structure of porous sets in Carnot groups [PDF]

open access: yesIllinois Journal of Mathematics, 2017
23 ...
Pinamonti A., Speight G.
openaire   +4 more sources

On the codimension of the abnormal set in step two Carnot groups [PDF]

open access: yes, 2018
In this article we prove that the codimension of the abnormal set of the endpoint map for certain classes of Carnot groups of step 2 is at least three.
Ottazzi, Alessandro, Vittone, Davide
core   +2 more sources

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