Results 81 to 90 of about 523 (200)

Existence of Solution for Two Classes of Quasilinear Systems Defined on a Nonreflexive Orlicz–Sobolev Spaces

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 13324-13360, August 2026.
ABSTRACT This paper proves the existence of nontrivial solution for two classes of quasilinear systems of the type −ΔΦ1u=Fu(x,u,v)+λRu(x,u,v)inΩ−ΔΦ2v=−Fv(x,u,v)−λRv(x,u,v)inΩu=v=0on∂Ω$$ \left\{\begin{array}{l}\hfill -{\Delta}_{\Phi_1}u={F}_u\left(x,u,v\right)+\lambda {R}_u\left(x,u,v\right)\kern0.1832424242424242em \mathrm{in}\kern0.3em \Omega ...
Lucas da Silva, Marco Souto
wiley   +1 more source

Do Science Kardashians Get Citation Premium? Self‐Fulfilling Effects of Social Media on Scientific Impact

open access: yesKyklos, Volume 79, Issue 3, Page 788-795, August 2026.
ABSTRACT We analyze whether the visibility of scientists on social media affects the number of academic citations. We use the global COVID‐19 pandemic as a quasinatural experiment that exogenously increased public attention and the demand for expertise.
Christian Lessmann   +2 more
wiley   +1 more source

Numerical Solutions for Nonlinear Ordinary and Fractional Duffing Equations Using Combined Fibonacci–Lucas Polynomials

open access: yesAxioms
Two nonlinear Duffing equations are numerically treated in this article. The nonlinear fractional-order Duffing equations and the second-order nonlinear Duffing equations are handled.
Waleed Mohamed Abd-Elhameed   +3 more
doaj   +1 more source

On the Lucas polynomials and some of their new identities

open access: yesAdvances in Difference Equations, 2018
The main purpose of this paper is, using the elementary and combination methods, to study the arithmetical properties of the Lucas polynomials and to obtain some new and interesting identities for them.
Zhang Jin
doaj   +1 more source

Enhanced Liver Fibrosis Test, FIB‐4 and FibroScan: Real‐World Prognostic Accuracy for MASLD in a Biopsy‐Controlled Cohort

open access: yesLiver International, Volume 46, Issue 8, August 2026.
ABSTRACT Background and Aims Liver fibrosis is a major determinant of liver‐related events (LREs) in patients with metabolic dysfunction‐associated steatotic liver disease (MASLD). Effective stratification based on fibrosis severity is essential for accurate prognosis.
Antonio Liguori   +17 more
wiley   +1 more source

On a generalization of the Hosoya triangle [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
This paper introduces the Fibonacci polynomial triangle, inspired by the structure of the Hosoya triangle and constructed using Fibonacci polynomials.
Turhan Çifçi   +2 more
doaj   +1 more source

Forecasting Climate Change Using a Multivariate Cointegrated System

open access: yesOxford Bulletin of Economics and Statistics, Volume 88, Issue 4, Page 783-802, August 2026.
ABSTRACT A cointegrated vector equilibrium correction model of key climate variables including sea surface temperature, ocean heat content, Arctic sea‐ice extent and sea‐level change is built, driven by radiative forcing in which a stochastic trend arises due to anthropogenic emissions of greenhouse gases.
Jennifer L. Castle   +3 more
wiley   +1 more source

Predicting Next‐Day Passive Suicidal Ideation in At‐Risk Youth

open access: yesSuicide and Life-Threatening Behavior, Volume 56, Issue 4, August 2026.
ABSTRACT Introduction Passive suicidal ideation (SI) is a well‐established risk factor for suicidal behavior but has received less attention than active SI. Although recent work has leveraged intensive longitudinal data and machine learning (ML) to forecast short‐term risk for active SI, passive SI remains understudied as a prediction target.
Shane Kentopp   +4 more
wiley   +1 more source

GENERALIZED IDENTITIES OF BIVARIATE FIBONACCI AND BIVARIATE LUCAS POLYNOMIALS

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2020
In this paper, we present generalized identities of bivariate Fibonacci polynomials and bivariate Lucas polynomials and related identities consisting even and odd terms. Binet’s formula will employ to obtain the identities.
Jaya Bhandari   +2 more
doaj  

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