On the Numerical Range and Numerical Radius of the Volterra Operator
Известия Иркутского государственного университета: Серия "Математика", 2018 In this paper, we investigated the numerical range and the numerical radius of the classical Volterra operator on the complex space $L^2[0,1]$. In particular, we determined the numerical range, the numerical radius of real and imaginary part of the ...
L. Khadkhuu, D. Tsedenbayar
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Journal of MathematicsIn this paper, we delve into the intricate connections between the numerical ranges of specific operators and their transformations using a convex function. Furthermore, we derive inequalities related to the numerical radius.
Feras Bani-Ahmad, M. H. M. Rashid
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Evaluation of the Acoustic Performance of Porous Materials Lined Ducts with Geometric Discontinuities [PDF]
Archives of Acoustics, 2022 Duct silencers provide effective noise reduction for heating, ventilation and air conditioning systems. These silencers can achieve an excellent sound attenuation through the attributes of their design.
Dhouha Tounsi +5 more
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Research on Gas Drainage Laws of SRV-fractured Horizontal Wells in Different Types of Tight Gas Reservoirs [PDF]
E3S Web of Conferences, 2022 Horizontal well and large-scale hydraulic fracturing are the main technical means for tight gas development at present. However, tight gas reservoirs are characterized by strong heterogeneity, and different types of gas Wells have different production ...
Li Xucheng +4 more
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Some Results on Polynomial Numerical Hulls of Perturbed Matrices [PDF]
Sahand Communications in Mathematical Analysis, 2019 In this paper, the behavior of the pseudopolynomial numerical hull of a square complex matrix with respect to structured perturbations and its radius is investigated.
Madjid Khakshour, Gholamreza Aghamollaei
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Research on the prediction of liquid CO2 phase transition cracking radius in coal seams
Gong-kuang zidonghua, 2023 Predicting cracking radius is a prerequisite for determining the holes spacing of gas extraction technology by liquid CO2 phase transition cracking and permeability improvement, which directly affects the gas extraction effect.
WANG Changlu +4 more
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Three-dimensional solitons in Rydberg-dressed cold atomic gases with spin–orbit coupling
Scientific Reports, 2023 We present numerical results for three-dimensional (3D) solitons with symmetries of the semi-vortex (SV) and mixed-mode (MM) types, which can be created in spinor Bose–Einstein condensates of Rydberg atoms under the action of the spin–orbit coupling (SOC)
Yuan Zhao +7 more
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Study on effective extraction radius of bedding borehole under the impact of normal fault
Gong-kuang zidonghua, 2022 The reasonable effective extraction radius of borehole is the key to ensure gas extraction effect. However, the research of effective extraction radius mainly focuses on the measurement method of effective extraction radius of borehole, and there is a ...
JIANG Mingquan +4 more
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Preface to the special issue on the numerical range and numerical radius [PDF]
Linear and Multilinear Algebra, 2009 The study of the numerical range, numerical radius, and their generalizations has a long and extensive history.
C.-K. Li, T.-Y. Tam
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Numerical Simulation of Supersonic Carman Curve Bodies with Aerospike
International Journal of Aerospace Engineering, 2021 Drag reduction is one of the important problems for the supersonic vehicles. As one of the drag reduction methods, aerospike has been used in some equipment because of its good drag reduction effect.
HaiLong Zhao +5 more
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