Results 41 to 50 of about 279 (142)

Stability Analysis of Nondifferentiable Systems

open access: yesStudies in Applied Mathematics, Volume 154, Issue 1, January 2025.
ABSTRACT Differential equations with right‐hand side functions that are not everywhere differentiable are referred to as nondifferentiable systems. This paper introduces three novel methods to address stability issues in nondifferentiable systems.
Jiwoon Sim, Tianxu Wang, Hao Wang
wiley   +1 more source

The non-linear Dirichlet problem and the CR Yamabe problem

open access: yesLe Matematiche, 1999
See directly the ...
Nicola Garofalo, dimiter Vassilev
doaj  

The Yamabe Problem and Nonlinear Boundary Value Problems

open access: yesJournal of Differential Equations, 1995
The paper is concerned with the scalar curvature equation with prescribed mean curvature on the boundary of a given Riemannian manifold. Just as in \textit{T. Ouyang} [Trans. Am. Math. Soc. 331, No. 2, 503-527 (1992; Zbl 0759.35021)], this Riemannian manifold is assumed to have negative constant scalar curvature in the interior and zero mean curvature ...
openaire   +1 more source

Successful Treatment With Evocalcet Against Familial Hypocalciuric Hypercalcemia Type 3 (FHH3) Identified by AP2S1 Gene Mutation (p.Arg15Leu)

open access: yesCase Reports in Endocrinology, Volume 2025, Issue 1, 2025.
Background: Familial hypocalciuric hypercalcemia type 3 (FHH3) is a rare hereditary disorder caused by a heterozygous AP2S1 gene mutation, characterized by hypocalciuria and hypercalcemia due to impaired intracellular signal transduction of calcium (Ca)‐sensing receptors (CaSRs).
Ai Chida   +12 more
wiley   +1 more source

A compactness theorem for the Yamabe problem

open access: yesJournal of Differential Geometry, 2009
In this paper, we prove compactness for the full set of solutions to the Yamabe Problem if $n\leq 24$. After proving sharp pointwise estimates at a blowup point, we prove the Weyl Vanishing The- orem in those dimensions, and reduce the compactness question to showing positivity of a quadratic form.
Khuri, M.A., Marques, F.C., Schoen, R.M.
openaire   +2 more sources

On perturbations of the fractional Yamabe problem [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2017
The fractional Yamabe problem, proposed by González-Qing (2013, Anal. PDE) is a geometric question which concerns the existence of metrics with constant fractional scalar curvature. It extends the phenomena which were discovered in the classical Yamabe problem and the boundary Yamabe problem to the realm of nonlocal conformally invariant operators.
Choi, Woocheol, Kim, Seunghyeok
openaire   +3 more sources

Comprehensive Safety Assessment of Hydrogen: From Production to Application in Energy Systems

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
In the quest for sustainable and clean energy alternatives to fossil fuels, hydrogen emerges as a front‐runner due to its high energy yield and environmentally friendly combustion byproduct, water. This study delves into the comprehensive lifecycle of hydrogen energy, from its production through various methods, storage, and transportation, to its ...
Ahmed Nazmus Sakib   +5 more
wiley   +1 more source

The Yamabe problem

open access: yes, 2023
Βασικό αντικείμενο της παρούσας διπλωματικής εργασίας είναι το πρόβλημα του Yamabe, το οποίο αφορά τη σύμμορφη παραμόρφωση μιας μέτρικής Riemann σε κάποια με σταθερή βαθμωτή καμπυλότητα. Στο Κεφάλαιο 1 κάνουμε μια ανασκόπιση του προβλήματος, και επιπλέον παρουσιάζουμε μία λύση του προβλήματος για διάσταση 2 χρησιμοποιόντας μεθόδους επιφανειών Riemann ...
openaire   +1 more source

On a fully nonlinear Yamabe problem [PDF]

open access: yesAnnales Scientifiques de l’École Normale Supérieure, 2006
We solve the $σ_2$-Yamabe problem for a non locally conformally flat manifold of dimension $n>8$.
Ge, Yuxin, Wang, Guofang
openaire   +3 more sources

2‐Conformal Vector Fields on the Model Sol Space and Hyperbolic Ricci Solitons

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In this study, we present the notion of 2‐conformal vector fields on Riemannian and semi‐Riemannian manifolds, which are an extension of Killing and conformal vector fields. Next, we provide suitable vector fields in Sol space that are 2‐conformal. A few implications of 2‐conformal vector fields in hyperbolic Ricci solitons are investigated.
Rawan Bossly   +3 more
wiley   +1 more source

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