Abstract
In this paper, under very general assumptions, we prove existence and regularity of distributional solutions to homogeneous Dirichlet problems of the form
Here \(\Delta _{1} \) is the 1-Laplace operator, \(\Omega \) is a bounded open subset of \(\mathbb {R}^N\) with Lipschitz boundary, h(s) is a continuous function which may become singular at \(s=0^{+}\), and f is a nonnegative datum in \(L^{N,\infty }(\Omega )\) with suitable small norm. Uniqueness of solutions is also shown provided h is decreasing and \(f>0\). As a preparatory tool for our method a general theory for the same problem involving the p-Laplacian (with \(p>1\)) as principal part is also established. The main assumptions are further discussed in order to show their optimality.
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De Cicco, V., Giachetti, D., Oliva, F. et al. The Dirichlet problem for singular elliptic equations with general nonlinearities. Calc. Var. 58, 129 (2019). https://doi.org/10.1007/s00526-019-1582-4
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DOI: https://doi.org/10.1007/s00526-019-1582-4