Results 61 to 70 of about 4,785 (188)
Water Resources Research, Volume 62, Issue 8, August 2026.Abstract Accurate identification of nonaqueous phase liquid (NAPL) contamination sources is critical in pollution management. However, the joint inversion of source characteristics and heterogeneous hydrogeological parameters faces two major challenges.
Jiannan Luo +6 more
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On the completeness of a pair of biorthogonally conjugated systems of functions
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015 In this paper we studied the spectral problem for an ordinary second order differential equation on a finite interval with a discontinuous coefficient of the highest derivative. At the ends of the segment the boundary conditions of the first kind are given.
Alfira A Gimaltdinova, Ksenija V Kurman
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Convergence of Hermite expansions in modulation spaces
Bulletin of the London Mathematical Society, Volume 58, Issue 8, August 2026.Abstract The aim of this paper is to give an elementary proof that the Hermite expansion of a function f$f$ in the modulation space Mp(R)$M^p({\mathbb {R}})$ converges to f$f$ in Mp(R)$M^p({\mathbb {R}})$ when 1
Philippe Jaming, Michael Speckbacher
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Going Next after “A Guide to Special Functions in Fractional Calculus”: A Discussion Survey
MathematicsIn the survey Kiryakova: “A Guide to Special Functions in Fractional Calculus” (published in this same journal in 2021) we proposed an overview of this huge class of special functions, including the Fox H-functions, the Fox–Wright generalized ...
Virginia Kiryakova +1 more
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Boundary problem for the singular heat equation
Karpatsʹkì Matematičnì Publìkacìï, 2017 The scheme for solving of a mixed problem with general boundary conditions is proposed for a heat equation \[a(x)\frac{\partial T}{\partial \tau}= \frac{\partial}{\partial x} \left(\lambda(x)\frac{\partial T}{\partial x}\right)\] with coefficient $a(x ...
O.V. Makhnei
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International Journal of Quantum Chemistry, Volume 126, Issue 13, July 5, 2026.The early history of the extended Koopmans' theorem is reviewed. The history of studies of its exactness for ionization is discussed, as well as limits of accuracy for electron affinities. The extended Koopmans' theorem will be useful in obtaining Dyson orbitals for application in studies of chemical reactivity.
Robert C. Morrison
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Mathematics, 2017 In this work, we deal with the autonomy issue in the perturbation expansion for the eigenfunctions of a compact Hilbert–Schmidt integral operator. Here, the autonomy points to the perturbation expansion coefficients of the relevant eigenfunction not ...
Süha Tuna, Metin Demiralp
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Advanced Science, Volume 13, Issue 38, 9 July 2026.Acoustic plasmons in Ti3C2Tx MXene strongly compress infrared electromagnetic fields and enhance light–matter interactions at the nanoscale. This platform couples broadband plasmon excitations with molecular vibrations, enabling simultaneous sensing of high‐ and low‐frequency vibrational modes in ultrathin PMMA and graphene oxide films, and extending ...
Changhoon Park +7 more
wiley +1 more source
Nonstationary scattering of elastic waves by a spherical inclusion [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамикаProblems of elastic wave scattering by various types of inhomogeneities rank among the most complex and relevant topics in the field of deformable solid dynamics.
Usmonov, Botir Shukurillaevich +3 more
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A nonlocal boundary problem for the Laplace operator in a half disk
Electronic Journal of Differential Equations, 2014 In the present work we investigate the nonlocal boundary problem for the Laplace equation in a half disk. The difference of this problem is the impossibility of direct applying of the Fourier method (separation of variables). Because the corresponding
Gani A. Besbaev +2 more
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