Results 61 to 70 of about 105,688 (202)

Existence of Solutions of Semilinear Wave Equations With Time‐Dependent Propagation Speed and Time Derivative Nonlinearity

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Consider wave equations with time derivative nonlinearity and time‐dependent propagation speed which are generalized versions of the wave equations in the Friedmann–Lemaître–Robertson–Walker (FLRW) spacetime, the de Sitter spacetime and the anti‐de Sitter space time.
Kimitoshi Tsutaya, Yuta Wakasugi
wiley   +1 more source

Single Linkage Weighted Steepest Gradient Adaboost Cluster-Based D2D in 5G Networks

open access: yesJournal of Telecommunications and Information Technology, 2023
Efficiency of data transmissions with minimum latency levels and better resource utilization is a challenging issue in 5 G device-to-device (D 2D) environments.
Sridhar Varadala, S. Emalda Roslin
doaj   +1 more source

Constant scalar curvature hypersurfaces in $(3+1)$-dimensional GHMC Minkowski spacetimes

open access: yes, 2017
We prove that every $(3+1)$-dimensional flat GHMC Minkowski spacetime which is not a translation spacetime or a Misner spacetime carries a unique foliation by spacelike hypersurfaces of constant scalar curvature.
Smith, Graham
core   +1 more source

On Geometric Phase Model in the Theory of Curves With Myller Configuration

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we introduce a linearly polarized light wave in an optical fiber and rotation of the polarization plane through the Frenet‐type frame with Myller configuration. Since the geometric evaluation and interpretations of a polarized light wave are associated with geometric phase, a new type of geometric phase model has been ...
Zehra İşbilir   +2 more
wiley   +1 more source

Bethe–Salpeter bound-state structure in Minkowski space

open access: yesPhysics Letters B, 2016
The quantitative investigation of the scalar Bethe–Salpeter equation in Minkowski space, within the ladder-approximation framework, is extended to include the excited states.
C. Gutierrez   +5 more
doaj   +1 more source

Solving for Blameless and Optimal Control Under Prioritized Safety Constraints

open access: yesOptimal Control Applications and Methods, EarlyView.
Summary of the proposed method for solving for blameless and optimal control sequences. ABSTRACT In many safety‐critical optimal control problems, users may request multiple safety constraints that are jointly infeasible due to external factors such as subsystem failures, unexpected disturbances, or fuel limitations.
Natalia Pavlasek   +3 more
wiley   +1 more source

Minkowski type inequality for convex functions [PDF]

open access: yesJournal of Mathematical Inequalities, 2015
We obtain a Minkowski type inequality for convex functions with weights satisfying the Jensen-Steffensen conditions.
Kvesić , Ljiljanka, Pečarić, Josip
openaire   +2 more sources

Page curves and entanglement islands for the step-function Vaidya model of evaporating black holes

open access: yesJournal of High Energy Physics, 2023
It was proposed recently that the fine-grained entropy of the Hawking radiation can be expressed by the semiclassical island formula, which reproduces the unitary Page curve.
Chang-Zhong Guo   +2 more
doaj   +1 more source

Braided Statistics from Abelian Twist in $\kappa$-Minkowski Spacetime

open access: yes, 2009
$\kappa$-deformed commutation relation between quantum operators is constructed via abelian twist deformation in $\kappa$-Minkowski spacetime. The commutation relation is written in terms of universal $R$-matrix satisfying braided statistics.
CHAIHO RIM   +4 more
core   +1 more source

The degree of cooperativism in Europe: Towards an evaluation model for cooperative banking

open access: yesAnnals of Public and Cooperative Economics, EarlyView.
Abstract Democracy, social commitment and proximity are fundamental values of cooperative‐based financial institutions. The degree of cooperativism of an entity (or, by extension, of a territorial area or country) can be associated with the intensity with which the entity promotes the inherent values of cooperatives.
Francisco Salas‐Molina   +2 more
wiley   +1 more source

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