Abstract
This paper is concerned with the existence and uniqueness of variational solutions of the strongly nonlinear equation
with the coefficients a i,j (x, s) satisfying an eHipticity degenerate condition and hypotheses weaker than the continuity with respect to the variable s. Furthermore, we establish a condition on f under which the solution is bounded in a bounded open subset Ω of Rm.
Similar content being viewed by others
References
M. K. V. Murthy and G. Stampacchia, “Boundary value problems for some degenerate-elliptic operators,” Ann. Matem., 80, No. 4, 1–122 (1968).
L. Boccardo and D. Giachetti, “Strongly nonlinear unilateral problems,” Appl. Math. Optim., 9, 291–301 (1983).
H. Brezis and F. E. Browder, “Strongly nonlinear elliptic boundary value problems,” Ann. Sci. Norm. Sup. Pisa, 5, 587–603 (1978).
P. Hess, “On strongly nonlinear problems,” Fund. Anal. Proc. Braz. Math. Soc. Sympos., Lect. Notes Pure AppL Math., 18, 91–109 (1976).
F. Guglielmino and F. Nicolosi, “Teoremi di esistenza per i problemi al contorna relativi alle equazioni ellittiche quasilineari,” Ricerche Matem., 37, Fc. 1, 157–176 (1988).
F. Nicolosi, “Regolarizzazione delle soluzioni deboli dei problemi al contorna per operatori parabolici degeneri,” Le Matematiche, 33, 83–98 (1978).
F. Nicolosi, “Soluzioni deboli dei problemi al contorna per operatori parabolici che possono degenerate,” Ann. Matem., 125, No. 4, 135–155 (1980).
S. Bonafede, “Quasilinear degenerate elliptic variational inequalities with discontinuous coefficients,” Comment. Math. Univ. Carolinae, 34, No. 1, 55–61 (1993).
F. Guglielmino and F. Nicolosi, “Sulle w-soluzioni dei problemi al contorna per operatori ellittici degeneri,” Ricerche Matem., Supp., 36, 59–72 (1987).
E. Zeidler, Nonlinear Functional Analysis and Its Applications, Vol. II/B: Nonlinear Monotone Operators, Springer-Verlag (1990).
G. Stampacchia, “Le probleme de Dirichlet pour les equations elliptiques du second ordre a coefficients discontinus,” Ann. Inst. Fourier, 15, 189–257 (1965).
Rights and permissions
About this article
Cite this article
Bonafede, S. Strongly nonlinear degenerate elliptic equations with discontinuous coefficients. I. Ukr Math J 48, 977–987 (1996). https://doi.org/10.1007/BF02390956
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02390956