Abstract
We consider the first mixed problem for a certain class of anisotropic parabolic equations of the form \( {\left(\beta \left(x,u\right)\right)}_t^{\prime }-\operatorname{div}\kern0.5em a\left(t,x,u,\nabla u\right)-b\left(t,x,u,\nabla u\right)=u \) where μ is a measure and the coefficients contain nonpower nonlinearities in the cylindrical domain DT = (0, T)×Ω, where Ω ⊂ ℝn is a bounded domain. We prove the existence of a renormalized solution of the problem for gt = 0 and a function β(x, r), which increases with respect to r and satisfies the Carath´eodory condition.
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Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya. Tematicheskie Obzory, Vol. 163, Differential Equations, 2019.
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Vorob’yov, N.A., Mukminov, F.K. Existence of a Renormalized Solution of a Parabolic Problem in Anisotropic Sobolev–Orlicz Spaces. J Math Sci 258, 37–64 (2021). https://doi.org/10.1007/s10958-021-05535-8
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DOI: https://doi.org/10.1007/s10958-021-05535-8
Keywords and phrases
- anisotropic parabolic equation
- renormalized solution
- nonpower nonlinearity
- existence of solutions
- N-function