Gap Between Operator Norm and Spectral Radius for the Square of Antidiagonal Block Operator Matrices
Communications in Advanced Mathematical Sciences, 2022 In this work, the gap between operator norm and spectral radius for the square of antidiagonal block operator matrices in the direct sum of Banach spaces has been investigated, and also the gap between operator norm and numerical radius for the square of
Elif Otkun Çevik
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Direct imaging of ultrafast electron dynamics by X-ray sum frequency generation [PDF]
EPJ Web of Conferences, 2019 We present a nonlinear X-ray technique which provides a spatial electron density image of valence electron excitations. The technique combines a visible pump and an X-ray pulse and yields snapshots of the transition charge densities.
Rouxel Jérémy R. +3 more
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Intuitionistic fuzzy G-modules with respect to norms (T and S) [PDF]
Notes on IFS, 2023 In this paper, we introduced intuitionistic fuzzy G-modules on M under norms (t-norm T and s-conorm S) and some related results like intersection, sum and direct sum of them has also been discussed.
Rasul Rasuli
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On Some Results of a Torsion-Free Abelian Kernel Group
Recoletos Multidisciplinary Research Journal, 2014 In [6], for any torsion-free abelian groups Gand H, the kernel of Hin GisfHGGHHomfker, ker,. The kernel of Hin Gis a pure fully invariant subgroup of G.
Ricky B. Villeta
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Generalization of equitable efficiency in multiobjective optimization problems by the direct sum of matrices [PDF]
Iranian Journal of Numerical Analysis and Optimization, 2023 We suggest an a priori method by introducing the concept of AP - equitable efficiency. The preferences matrix AP , which is based on the partition P of the index set of the objective functions, is given by the decision-maker.
F. Ahmadi +2 more
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Proximinality in generalized direct sums [PDF]
International Journal of Mathematics and Mathematical Sciences, 2004 We consider proximinality and transitivity of proximinality for subspaces of finite codimension in generalized direct sums of Banach spaces. We give several examples of Banach spaces where proximinality is transitive among subspaces of finite codimension.
Darapaneni Narayana, T. S. S. R. K. Rao
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Notes about Quasi-Mixing Operators [PDF]
Sahand Communications in Mathematical AnalysisIn this article, we introduce quasi-mixing operators and construct various examples. We prove that quasi-mixing operators exist on all finite-dimensional and infinite-dimensional Banach spaces.
Mansooreh Moosapoor, Ismail Nikoufar
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BEST APPROXIMATION IN QUASI TENSOR PRODUCT SPACE AND DIRECT SUM OF LATTICE NORMED SPACES [PDF]
Journal of Algebraic Systems, 2014 We study the theory of best approximation in tensor product and the direct sum of some lattice normed spacesX_{i}. We introduce quasi tensor product space anddiscuss about the relation between tensor product space and thisnew space which we denote it by ...
Mahdi Iranmanesh, Fateme Solimani
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Fuzzy near best approximation as a generalization of fuzzy best approximation [PDF]
Journal of Mahani Mathematical ResearchGiven a fuzzy normed space, we will introduce the notion of fuzzy near best approximation as a generalization of the notion of fuzzy best approximation.
Ali Reza Khoddami, Rasoul Tourani
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Differentiation of computed sum of hourly and daily reference evapotranspiration in a semi-arid climate [PDF]
Journal of Applied Research in Water and Wastewater, 2017 Electronic weather stations have increased the availability of weather data for computing hourly and daily reference evapotranspiration (ETo). There is a rational question applied for different climate conditions whether the sum of hourly ETo computation
Bahram Bakhtiari +2 more
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