Home Mathematics Existence and multiplicity analysis of a system of nonlinear elliptic equations: Theoretical results and applications
Article
Licensed
Unlicensed Requires Authentication

Existence and multiplicity analysis of a system of nonlinear elliptic equations: Theoretical results and applications

  • Khaled Kefi EMAIL logo , Jian Liu and Mohamed Karim Hamdani
Published/Copyright: October 31, 2025
Become an author with De Gruyter Brill

Abstract

This paper introduces a mathematical model that provides a versatile framework for the investigation of complex phenomena in bounded domains. The model is described by a system of partial differential equations subject to boundary conditions. The equations involve a set of functions, denoted by w i , which satisfy a coupled system of equations. The model captures various physical processes and phenomena across different domains. The analysis establishes the existence of solutions for the system of equations under consideration. Moreover, it demonstrates the possibility of multiple solutions.

Funding statement: The authors extend their appreciation to Northern Border University, Saudi Arabia for supporting this work through project number (NBU-CRP-2025-1706). M. K. Hamdani was supported by the Tunisian Military Research Center for Science and Technology Laboratory LR19DN01.

References

[1] G. Bonanno, P. Candito and G. D’Aguì, Variational methods on finite dimensional Banach spaces and discrete problems, Adv. Nonlinear Stud. 14 (2014), no. 4, 915–939. 10.1515/ans-2014-0406Search in Google Scholar

[2] G. Bonanno and S. A. Marano, On the structure of the critical set of non-differentiable functions with a weak compactness condition, Appl. Anal. 89 (2010), no. 1, 1–10. 10.1080/00036810903397438Search in Google Scholar

[3] Y. Chen, S. Levine and M. Rao, Variable exponent, linear growth functionals in image restoration, SIAM J. Appl. Math. 66 (2006), no. 4, 1383–1406. 10.1137/050624522Search in Google Scholar

[4] E. B. Davies and A. M. Hinz, Explicit constants for Rellich inequalities in L p ( Ω ) , Math. Z. 227 (1998), no. 3, 511–523. 10.1007/PL00004389Search in Google Scholar

[5] X.-L. Fan and Q.-H. Zhang, Existence of solutions for p ( x ) -Laplacian Dirichlet problem, Nonlinear Anal. 52 (2003), no. 8, 1843–1852. 10.1016/S0362-546X(02)00150-5Search in Google Scholar

[6] X.-L. Fan and D. Zhao, On the generalized Orlicz–Sobolev space W k , p ( x ) ( Ω ) , J. Gansu Educ. College 12 (1998), 1–6. Search in Google Scholar

[7] A. Hadjian and S. Shakeri, Multiple solutions for a class of Dirichlet double eigenvalue quasilinear elliptic systems involving the ( p 1 , p 2 , , p n ) -laplacian operator, Sci. World J. 2013 (2013), Article ID 767989. 10.1155/2013/767989Search in Google Scholar PubMed PubMed Central

[8] Y. Karagiorgos and N. Yannakakis, A Neumann problem involving the p ( x ) -Laplacian with p = in a subdomain, Adv. Calc. Var. 9 (2016), no. 1, 65–76. 10.1515/acv-2014-0003Search in Google Scholar

[9] W. Liu and P. Zhao, Existence of positive solutions for p ( x ) -Laplacian equations in unbounded domains, Nonlinear Anal. 69 (2008), no. 10, 3358–3371. 10.1016/j.na.2007.09.027Search in Google Scholar

[10] M. Růžička, Electrorheological Fluids: Modeling and Mathematical Theory, Lecture Notes in Math. 1748, Springer, Berlin, 2000. 10.1007/BFb0104029Search in Google Scholar

[11] J. Simon, Régularité de la solution d’une équation non linéaire dans 𝐑 N , Journées d’Analyse Non Linéaire (Besançon 1977), Lecture Notes in Math. 665, Springer, Berlin (1978), 205–227. 10.1007/BFb0061807Search in Google Scholar

[12] Z. Yuan, Y. Wang and S. Liu, Multiplicity of solutions for a class of ( p 1 , p 2 , , p n ) -Laplacian elliptic systems with a nonsmooth potential, Bound. Value Probl. 2019 (2019), Paper No. 50. 10.1186/s13661-019-1164-6Search in Google Scholar

Received: 2025-04-20
Accepted: 2025-09-09
Published Online: 2025-10-31

© 2025 Walter de Gruyter GmbH, Berlin/Boston

Downloaded on 21.12.2025 from https://www.degruyterbrill.com/document/doi/10.1515/gmj-2025-2085/html
Scroll to top button