2,318,406 research outputs found

    Convergence results for conditional expectations

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    Let E,F be two Polish spaces and [Xn,Yn],[X,Y] random variables with values in E×F (not necessarily defined on the same probability space). We show some conditions which are sufficient in order to assure that, for each bounded continuous function f on E×F, the conditional expectation of f(Xn,Yn) given Yn converges in distribution to the conditional expectation of f(X,Y) given Y

    A nonabelian trace formula

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    Let E/FE/F be an extension of number fields with Gal(E/F)\mathrm{Gal}(E/F) simple and nonabelian. In [G] the first named author suggested an approach to nonsolvable base change and descent of automorphic representations of GL2\mathrm{GL}_2 along such an extension. Motivated by this we prove a trace formula whose spectral side is a weighted sum over cuspidal automorphic representations of GL2(AE)\mathrm{GL}_2(\mathbb{A}_E) that are isomorphic to their Gal(E/F)\mathrm{Gal}(E/F)-conjugates.Comment: Comments are welcom

    Charge transfer and Fermi level shift in p-doped single-walled carbon nanotubes

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    The electronic properties of p-doped single-walled carbon nanotube (SWNT) bulk samples were studied by temperature-dependent resistivity and thermopower, optical reflectivity, and Raman spectroscopy. These all give consistent results for the Fermi level downshift (Delta E(F)) induced by doping. We find Delta E(F) approximate to 0.35 eV and 0.50 eV for concentrated nitric and sulfuric acid doping respectively. With these values, the evolution of Raman spectra can be explained by variations in the resonance condition as E(F) moves down into the valence band. Furthermore, we find no evidence for diameter-selective doping, nor any distinction between doping responses of metallic and semiconducting tubes
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