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The difference quotient operator
Publicationes Mathematicae Debrecen, 1994We discuss the spectral properties of a linear operator defined on a Hilbert space. Using the results of [\textit{S. Axler}, \textit{J. Conway} and \textit{G. McDonald}, Can. J. Math. 34, 466-483 (1982; Zbl 0488.47011)], we determine the essential spectrum of our operator.
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Operator-Difference Scheme with a Factorized Operator
2015In the study of difference schemes for time-dependent problems of mathematical physics, the general theory of stability (well-posedness) for operator-difference schemes is in common use. At the present time, the exact (matching necessary and sufficient) conditions for stability are obtained for a wide class of two- and three-level difference schemes ...
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Sequences and Difference Operators
1996Our first experience with operators comes from infinitesimal calculus. In that setting, we are familiar with the differentiation and integration operators as they are applied to functions. As we shall see shortly, the operators of the difference calculus are applied not to functions, but to sequences of numbers.
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Post-operative Complications after Different Turbinates Operations (Comparative Study)
Indian Journal of Otolaryngology and Head & Neck SurgerySince Inferior turbinate hypertrophy is on top list of the most common causes of nasal blockage, this study is trial for recording the exact incidence for the postoperative complications of two different procedures of turbinate reduction, thus comparing endoscopic submucosal diathermy and radiofrequency ablation.retrospective randomized comparative ...
Rami Fatoh Tantawy +3 more
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Additive Operator-Difference Schemes
2013Applied mathematical modeling is concerned with solving unsteady problems. Splitting schemes are attributed to the transition from a complex problem to a chain of simpler problems. This book shows how to construct additive difference schemes (splitting schemes) to solve approximately unsteady multi-dimensional problems for PDEs.
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Infrared Difference Spectroscopy of Proteins: From Bands to Bonds
Chemical Reviews, 2020Víctor A Lórenz-Fonfría
exaly

