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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.
Bonfiglioli A.   +4 more
core   +4 more sources

Hardy-Type Inequalities for the Carnot–Carathéodory Distance in the Heisenberg Group [PDF]

open access: greenJournal of Geometric Analysis, 2020
In this paper we study Hardy inequalities in the Heisenberg group $${\mathbb {H}}^n$$ H n , with respect to the Carnot–Carathéodory distance $$\delta $$ δ from the origin.
Valentina Franceschi, Dario Prandi
semanticscholar   +3 more sources

Review of Carnot Battery Technology Commercial Development

open access: yesEnergies, 2022
Carnot batteries are a quickly developing group of technologies for medium and long duration electricity storage. It covers a large range of concepts which share processes of a conversion of power to heat, thermal energy storage (i.e., storing thermal ...
Vaclav Novotny   +3 more
doaj   +2 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

Attainable Set for Rank 3 Step 2 Free Carnot Group with Positive Controls [PDF]

open access: yes2022 16th International Conference on Stability and Oscillations of Nonlinear Control Systems (Pyatnitskiy's Conference), 2022
We find the attainable set for a control system on the free Carnot group of rank 3 and step 2 with positive controls. This kind of control systems is connected with the theory of free Lie semigroups; with some estimates for probabilities of inequalities ...
A. Podobryaev
semanticscholar   +1 more source

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

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