<p>We prove the existence and uniform boundedness of weak solutions to a nonlinear elliptic boundary value problem in Orlicz–Sobolev spaces. The problem features a nonstandard growth condition and a general nonlinearity that depends on both the solution and its gradient through an intrinsic operator. Using truncation methods and Moser iteration techniques, we prove the existence of solutions and establish uniform <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(L^\infty \)</EquationSource> </InlineEquation>-bounds independent of the truncation parameter. Our results generalize previous work on problems with polynomial growth to the more general Orlicz–Sobolev framework.</p>

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Existence and Boundedness of Solutions for a Nonlinear Elliptic Problem in Orlicz–Sobolev Spaces

  • Fatemeh Mafi,
  • Abdolrahman Razani

摘要

We prove the existence and uniform boundedness of weak solutions to a nonlinear elliptic boundary value problem in Orlicz–Sobolev spaces. The problem features a nonstandard growth condition and a general nonlinearity that depends on both the solution and its gradient through an intrinsic operator. Using truncation methods and Moser iteration techniques, we prove the existence of solutions and establish uniform \(L^\infty \) -bounds independent of the truncation parameter. Our results generalize previous work on problems with polynomial growth to the more general Orlicz–Sobolev framework.