Asymptotic formulas for steady state voltage potentials in the presence of thin inhomogeneities. A rigorous error analysis |
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Institution: | 1. Universitá di Roma “La Sapienza”, Italy;2. IAC-CNR, Sezione di Firenze, Italy;3. Rutgers University, New Brunswick, NJ 08903, USA |
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Abstract: | We consider an electrically conducting medium with conductivity inhomogeneities in the form of sheets of thickness 2ε. In this setup we provide a rigorous derivation of the leading terms in the asymptotic expansion of the steady state boundary voltage potentials, as ε→0. In the two-dimensional case our derivation confirms the results, heuristically obtained in E. Beretta et al., Z. Angew. Math. Phys. 52 (2001) 543–572]. |
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