Results 31 to 40 of about 2,466 (181)

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   +1 more source

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

BiLipschitz Decomposition of Lipschitz Maps between Carnot Groups

open access: yesAnalysis and Geometry in Metric Spaces, 2015
Let f : G → H be a Lipschitz map between two Carnot groups. We show that if B is a ball of G, then there exists a subset Z ⊂ B, whose image in H under f has small Hausdorff content, such that B\Z can be decomposed into a controlled number of pieces, the ...
Li Sean
doaj   +1 more source

Deep Eutectic Solvent as Dual Solvent-Catalyst for Efficient Starch Esterification With Vinyl Laurate via Reactive Extrusion. [PDF]

open access: yesChemSusChem
A green approach to esterify wheat starch by reactive extrusion using a novel deep eutectic solvent has been developed. The DES acted both as a starch solvent and as an activating agent to complete the esterification within 15–30 min. This novel approach opens new opportunities for the development and upscaling of biobased polymers with promising ...
Bouzidi S   +8 more
europepmc   +2 more sources

Invertible Carnot Groups

open access: yesAnalysis and Geometry in Metric Spaces, 2014
Abstract We characterize Carnot groups admitting a 1-quasiconformal metric inversion as the Lie groups of Heisenberg type whose Lie algebras satisfy the J2-condition, thus characterizing a special case of inversion invariant bi-Lipschitz homogeneity.
openaire   +4 more sources

Sharp Hardy Identities and Inequalities on Carnot Groups

open access: yesAdvanced Nonlinear Studies, 2021
In this paper we establish general weighted Hardy identities for several subelliptic settings including Hardy identities on the Heisenberg group, Carnot groups with respect to a homogeneous gauge and Carnot–Carathéodory metric, general nilpotent groups ...
Flynn Joshua, Lam Nguyen, Lu Guozhen
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

X-states from a finite geometric perspective

open access: yesResults in Physics, 2021
It is found that 15 different types of two-qubit X-states split naturally into two sets (of cardinality 9 and 6) once their entanglement properties are taken into account.
Colm Kelleher   +3 more
doaj   +1 more source

Intrinsic regular surfaces in Carnot groups

open access: yesBruno Pini Mathematical Analysis Seminar
A Carnot group $G$ is a simply connected, nilpotent Lie group with stratified Lie algebra. Intrinsic regular surfaces in Carnot groups play the same role as C1 surfaces in Euclidean spaces.
Daniela Di Donato
doaj   +1 more source

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

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