Results 11 to 20 of about 1,909 (109)

Generalized Picone and Riccati inequalities for half-linear differential operators with arbitrary elliptic matrices.

open access: greenElectronic Journal of Differential Equations, 2010
Summary: We extend the well-known Picone identity for half-linear partial differential equations to equations with anisotropic \(p\)-Laplacian.
Simona Fišnarová, Robert Mařı́k
openalex   +3 more sources

Income-Related Inequalities in Future Health Prospects. [PDF]

open access: yesHealth Econ
ABSTRACT Measuring health disparities is key to monitoring health systems, but hitherto disparities in the individual risk people face about their future health has been neglected. This paper integrates individual health risk into income‐related health inequality measurement.
Kjellsson G, Petrie D, Van Ourti T.
europepmc   +2 more sources

Holmstedt's formula for the K‐functional: the limit case θ0=θ1$\theta _0=\theta _1$

open access: yesMathematische Nachrichten, Volume 296, Issue 12, Page 5474-5492, December 2023., 2023
Abstract We consider K‐interpolation spaces involving slowly varying functions, and derive necessary and sufficient conditions for a Holmstedt‐type formula to be held in the limiting case θ0=θ1∈{0,1}$\theta _0=\theta _1\in \lbrace 0,1\rbrace$. We also study the case θ0=θ1∈(0,1)$\theta _0=\theta _1\in (0,1)$.
Irshaad Ahmed   +2 more
wiley   +1 more source

The resource constrained clustered shortest path tree problem: Mathematical formulation and Branch&Price solution algorithm

open access: yesNetworks, Volume 81, Issue 2, Page 204-219, March 2023., 2023
Abstract In this article, the Resource Constrained Clustered Shortest Path Tree Problem is defined. It generalizes the classic Resource Constrained Shortest Path Tree Problem since it is defined on an undirected, complete and weighted graph whose set of nodes is partitioned into clusters.
Daniele Ferone   +3 more
wiley   +1 more source

Machine‐Learned HASDM Thermospheric Mass Density Model With Uncertainty Quantification

open access: yesSpace Weather, Volume 20, Issue 4, April 2022., 2022
Abstract A thermospheric neutral mass density model with robust and reliable uncertainty estimates is developed based on the Space Environment Technologies (SET) High Accuracy Satellite Drag Model (HASDM) density database. This database, created by SET, contains 20 years of outputs from the U.S. Space Force's HASDM, which currently represents the state
Richard J. Licata   +3 more
wiley   +1 more source

30 Years of space–time covariance functions

open access: yesWIREs Computational Statistics, Volume 13, Issue 2, March/April 2021., 2021
A separable covariance function (left) and a space‐time covariance function with dynamical compact support. Abstract In this article, we provide a comprehensive review of space–time covariance functions. As for the spatial domain, we focus on either the d‐dimensional Euclidean space or on the unit d‐dimensional sphere.
Emilio Porcu   +2 more
wiley   +1 more source

An oscillation theorem for the nonlinear degenerate elliptic equation in the Heisenberg group

open access: yesBoundary Value Problems, 2021
The aim of this paper is to study the oscillation of solutions of the nonlinear degenerate elliptic equation in the Heisenberg group H n $H^{n}$ . We first derive a critical inequality in H n $H^{n}$ . Based on it, we establish a Picone-type differential
Duan Wu, Pengcheng Niu
doaj   +1 more source

Caccioppoli-type inequalities for Dirac operators

open access: yesJournal of Inequalities and Applications, 2022
In this paper, we establish the Caccioppoli estimates for the nonlinear differential equation − D ‾ ( | D v | p − 2 D v ) = λ | v | p − 2 v , 1 < p < ∞ , $$ - \overline{D}\bigl( \vert Dv \vert ^{p-2}Dv\bigr) = \lambda \vert v \vert ^{p-2}v, \quad 1< p ...
Ardak Kashkynbayev, Gulaiym Oralsyn
doaj   +1 more source

A non-smooth Brezis-Oswald uniqueness result

open access: yesOpen Mathematics, 2023
We classify the non-negative critical points in W01,p(Ω){W}_{0}^{1,p}\left(\Omega ) of J(v)=∫ΩH(Dv)−F(x,v)dx,J\left(v)=\mathop{\int }\limits_{\Omega }\hspace{0.15em}H\left(Dv)-F\left(x,v){\rm{d}}x, where HH is convex and positively pp-homogeneous, while ...
Mosconi Sunra
doaj   +1 more source

Picone identities for half-linear elliptic operators with p(x)-Laplacians and applications to Sturmian comparison theory [PDF]

open access: yes, 2011
Picone identities are established for a class of half-linear elliptic operators with p(x)-Laplacians, and Sturmian comparison theorems are obtained on the basis of the Picone identities.
Yoshida Norio
core   +2 more sources

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