Results 71 to 80 of about 519,001 (206)
Solvability conditions for some difference operators
Advances in Difference Equations, 2005 Infinite-dimensional difference operators are studied. Under the assumption that the coefficients of the operator have limits at infinity, limiting operators and associated polynomials are introduced.
V. A. Volpert, N. C. Apreutesei
doaj +2 more sources
International Journal of Mathematics and Mathematical Sciences, 1990 In this note we prove the existence of operators which are not Tauberian even though they satisfy properties about restrictions being Tauberian. The operators are defined on Banach spaces which contain a somewhat reflexive, non-reflexive subspace.
Jesús Araujo, J. Martinez-Maurica
doaj +1 more source
Factorization of Fredholm operators in operator algebras
Matematychni Studii, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
Mathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 14122-14148, August 2026.ABSTRACT This paper develops a mathematical framework for interpreting observations of solar inertial waves in an idealized setting. Under the assumption of purely toroidal linear waves on the sphere, the stream function of the flow satisfies a fourth‐order scalar equation.
Tram Thi Ngoc Nguyen +3 more
wiley +1 more source
Small, Volume 22, Issue 44, 7 August 2026.A hybrid all‐solid‐state battery (ASSB) is implemented by integrating a thin‐film electrolyte on a bulk anode, and a thick cathode sheet. A densified anode substrate with suppressed porosity is prepared by cold pressing. Thin‐film electrolyte is fabricated onto the bulk substrate via co‐sputtering and infrared‐based rapid annealing.
Hyeseong Jeong +7 more
wiley +1 more source
Integrable operators and squares of Hankel operators. [PDF]
, 2008 Integrable operators arise in random matrix teory, where they describe the asymptotic distributions of large self-adjoint random matrices from the generalized unitary ensembles.
Blower, Gordon
core +3 more sources
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
wiley +1 more source
Stability of Fredholm properties and interpolation of operators.
, 1990 Stability of Fredholm properties and interpolation of ...
Wei. Cao (7954442)
core +2 more sources
Bulk‐Surface Coupled PDE With an Open Boundary
Studies in Applied Mathematics, Volume 157, Issue 2, August 2026.ABSTRACT We study a bulk‐surface coupled Laplace system involving an embedded open boundary. The problem is reformulated as an integro‐differential equation using boundary integral representations, for which we establish existence and uniqueness of the solution.
Charles L. Epstein +2 more
wiley +1 more source
Cubo, 2010 We will present sufficient conditions for the Fredholm property of Wiener-Hopf plus and minus Hankel operators with different Fourier matrix symbols in the C*-algebra of semialmost periodic elements.
L. P Castro, A. S. Silva
doaj