Results 1 to 10 of about 18,424 (186)

A Cornucopia of Carnot Groups in Low Dimensions [PDF]

open access: goldAnalysis and Geometry in Metric Spaces, 2022
Stratified groups are those simply connected Lie groups whose Lie algebras admit a derivation for which the eigenspace with eigenvalue 1 is Lie generating.
Le Donne Enrico, Tripaldi Francesca
doaj   +2 more sources

Sharp measure contraction property for generalized H-type Carnot groups [PDF]

open access: green, 2017
We prove that H-type Carnot groups of rank $k$ and dimension $n$ satisfy the $\mathrm{MCP}(K,N)$ if and only if $K\leq 0$ and $N \geq k+3(n-k)$. The latter integer coincides with the geodesic dimension of the Carnot group.
Davide Barilari, Luca Rizzi
openalex   +5 more sources

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

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   +2 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

Hilbert-Haar coordinates and Miranda's theorem in Lie groups

open access: yesBruno Pini Mathematical Analysis Seminar, 2020
We study the interior regularity of solutions to a class of quasilinear equations of non-degenerate p-Laplacian type on Lie groups that admit a system of Hilbert-Haar coordinates. These are coordinates with respect to which every linear function has zero
András Domokos, Juan J. Manfredi
doaj   +1 more source

Nature and importance of follicular lymphoma precursors

open access: yesHaematologica, 2014
It is now widely recognized that cancer development is a protracted process requiring the stepwise acquisition of multiple oncogenic events. In humans, this process can take decades, if not a lifetime, blurring the notion of ‘healthy’ individuals ...
Emilie Mamessier   +6 more
doaj   +1 more source

DFT screening of adsorption of biodiesel molecules on aluminum and stainless steel surfaces

open access: yesResults in Surfaces and Interfaces, 2022
We present a Density Functional Theory (DFT) study of the adsorption of small organic molecules, taken as models of biodiesel autoxidation products, on stainless steel and aluminum surfaces.
Claudia Cantarelli   +4 more
doaj   +1 more source

Measure contraction properties of Carnot groups [PDF]

open access: yes, 2016
We prove that any corank 1 Carnot group of dimension $k+1$ equipped with a left-invariant measure satisfies the $\mathrm{MCP}(K,N)$ if and only if $K \leq 0$ and $N \geq k+3$.
Rizzi, Luca
core   +5 more sources

On Viscosity and Equivalent Notions of Solutions for Anisotropic Geometric Equations

open access: yesAbstract and Applied Analysis, 2020
We prove that viscosity solutions of geometric equations in step two Carnot groups can be equivalently reformulated by restricting the set of test functions at the singular points.
Cecilia De Zan, Pierpaolo Soravia
doaj   +1 more source

A notion of rectifiability modeled on Carnot groups [PDF]

open access: yes, 2004
We introduce a notion of rectifiability modeled on Carnot groups. Precisely, we say that a subset E of a Carnot group M and N is a subgroup of M, we say E is N-rectifiable if it is the Lipschitz image of a positive measure subset of N.
Pauls, Scott D.
core   +4 more sources

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