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- W4385301823 abstract "We generalize many recent uniqueness results on the fractional Calderón problem to cover the cases of all domains with nonempty exterior. The highlight of our work is the characterization of uniqueness and nonuniqueness of partial data inverse problems for the fractional conductivity equation on domains that are bounded in one direction for conductivities supported in the whole Euclidean space and decaying to a constant background conductivity at infinity. We generalize the uniqueness proof for the fractional Calderón problem by Ghosh, Salo and Uhlmann to a general abstract setting in order to use the full strength of their argument. This allows us to observe that there are also uniqueness results for many inverse problems for higher order local perturbations of a lower order fractional Laplacian. We give concrete example models to illustrate these curious situations and prove Poincaré inequalities for the fractional Laplacians of any order on domains that are bounded in one direction. We establish Runge approximation results in these general settings, improve regularity assumptions also in the cases of bounded sets and prove general exterior determination results. Counterexamples to uniqueness in the inverse fractional conductivity problem with partial data are constructed in another companion work." @default.
- W4385301823 created "2023-07-28" @default.
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- W4385301823 date "2023-07-27" @default.
- W4385301823 modified "2023-09-23" @default.
- W4385301823 title "Fractional Calderón problems and Poincaré inequalities on unbounded domains" @default.
- W4385301823 doi "https://doi.org/10.4171/jst/444" @default.
- W4385301823 hasPublicationYear "2023" @default.
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