Results 41 to 50 of about 18,321 (180)

Geodesics in the Heisenberg Group

open access: yesAnalysis and Geometry in Metric Spaces, 2015
We provide a new and elementary proof for the structure of geodesics in the Heisenberg group Hn. The proof is based on a new isoperimetric inequality for closed curves in R2n.We also prove that the Carnot- Carathéodory metric is real analytic away from ...
Hajłasz Piotr, Zimmerman Scott
doaj   +1 more source

Nonlocal diffusion equations in Carnot groups

open access: yesRendiconti del Circolo Matematico di Palermo Series 2, 2022
20 ...
Isolda E. Cardoso, Raúl E. Vidal
openaire   +2 more sources

Uniform Gaussian Bounds for Subelliptic Heat Kernels and an Application to the Total Variation Flow of Graphs over Carnot Groups

open access: yesAnalysis and Geometry in Metric Spaces, 2013
In this paper we study heat kernels associated with a Carnot group G, endowed with a family of collapsing left-invariant Riemannian metrics σε which converge in the Gromov- Hausdorff sense to a sub-Riemannian structure on G as ε→ 0.
Capogna Luca   +2 more
doaj   +1 more source

The Peregrine Breather on the Zero-Background Limit as the Two-Soliton Degenerate Solution: An Experimental Study

open access: yesFrontiers in Physics, 2021
Solitons are coherent structures that describe the nonlinear evolution of wave localizations in hydrodynamics, optics, plasma and Bose-Einstein condensates.
Amin Chabchoub   +12 more
doaj   +1 more source

Curvature exponent and geodesic dimension on Sard-regular Carnot groups

open access: yesAnalysis and Geometry in Metric Spaces
In this study, we characterize the geodesic dimension NGEO{N}_{{\rm{GEO}}} and give a new lower bound to the curvature exponent NCE{N}_{{\rm{CE}}} on Sard-regular Carnot groups.
Golo Sebastiano Nicolussi, Zhang Ye
doaj   +1 more source

Rectifiability in Carnot Groups

open access: yes, 2022
This thesis is devoted to the study of the theory of rectifiability of sets and measures in the non smooth context of Carnot groups. The focus is on the study of the notion of P-rectifiability and its relation with other notions of rectifiability in Carnot groups.
openaire   +2 more sources

On Rectifiable Measures in Carnot Groups: Existence of Density

open access: yesThe Journal of Geometric Analysis, 2022
AbstractIn this paper, we start a detailed study of a new notion of rectifiability in Carnot groups: we say that a Radon measure is$${\mathscr {P}}_h$$Ph-rectifiable, for$$h\in {\mathbb {N}}$$h∈N, if it has positiveh-lower density and finiteh-upper density almost everywhere, and, at almost every point, it admits a unique tangent measure up to multiples.
Gioacchino Antonelli, Andrea Merlo
openaire   +5 more sources

Functional properties of limits of Sobolev homeomorphisms with integrable distortion

open access: yesСовременная математика: Фундаментальные направления
The functional and geometric properties of limits of homeomorphisms with integrable distortion of domains in Carnot groups are studied. The homeomorphisms belong to Sobolev classes.
S. K. Vodopyanov, S. V. Pavlov
doaj   +1 more source

BCL3 rearrangements in B-cell lymphoid neoplasms occur in two breakpoint clusters associated with different diseases

open access: yesHaematologica, 2023
The t(14;19)(q32;q13) often juxtaposes BCL3 with immunoglobulin heavy chain (IGH) resulting in overexpression of the gene. In contrast to other oncogenic translocations, BCL3 rearrangement (BCL3-R) has been associated with a broad spectrum of lymphoid ...
Anna Carbo-Meix   +44 more
doaj   +1 more source

Interior HW^{1,p} estimates for divergence degenerate elliptic systems in Carnot groups

open access: yes, 2012
Let X_1,...,X_q be the basis of the space of horizontal vector fields on a homogeneous Carnot group in R^n ...
Bramanti, Marco   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy