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Non-commutative measure of quantum correlations under local operations
(Springer, 2019-02)
We study some desirable properties of recently introduced measures of quantum correlations based on the amount of non-commutativity quantified by the Hilbert–Schmidt norm (Guo in Sci Rep 6:25241, 2016; Majtey et al. in ...
Essential spectrum and fredholm properties for perators on locally compact groups
(Theta Foundation, 2017)
We study the essential spectrum and Fredholm properties of certain integral and pseudo-differential operators associated to non-commutative locally compact groups G. The techniques involve crossed product C*-algebras. We ...
Eigenvalues and minimizers for a non-standard growth non-local operator
(Academic Press Inc Elsevier Science, 2020-04)
In this article we study eigenvalues and minimizers of a fractional non-standard growth problem. We prove several properties on these quantities and their corresponding eigenfunctions.
Spectral theory in a twisted groupoid setting: Spectral decompositions, localization and Fredholmness
(Universidad de Münster, 2020)
We study bounded operators defined in terms of the regular representations of the C*-algebra of an amenable, Hausdorff, second countable, locally compact groupoid endowed with a continuous 2-cocycle. We concentrate on ...
Gradient direction analysis for contour tracking and local non maximum suppression
(Proceedings of SPIE - The International Society for Optical Engineering, 2022)
Symmetry and non-uniformly elliptic operators
The goal of this paper is to study the symmetry properties of nonnegative solutions of elliptic equations involving a non uniformly elliptic operator. We consider on a ball the solutions of ∆pu + f(u) = 0 with zero Dirichlet ...
Weighted estimates for integral operators on local BMO type spaces
(2015)
We prove the weighted boundedness for a family of integral operators Tα on Lebesgue spaces and local BMO type spaces. To this end we show that Tα can be controlled by the Calder ́on operator and a local maximal operator. ...
On eigenvalue accumulation for non-self-adjoint magnetic operators
(ELSEVIER SCIENCE BV, 2017)
In this work, we use regularized determinants to study the discrete spectrum generated by relatively compact non-self-adjoint perturbations of the magnetic Schrodinger operator (-i del - A)(2) -b in R-3, with constant ...
Local Hardy spaces with variable exponents associated with non-negative self-adjoint operators satisfying Gaussian estimates
(Springer, 2020-07)
In this paper we introduce variable exponent local Hardy spaces $hLp$ associated with a non-negative self-adjoint operator $L$. We assume that, for every $t>0$, the operator $e^{-tL}$ has an integral representation whose ...