Results 241 to 250 of about 143,393 (276)

Exact controllability for some degenerate wave equations

Mathematical Methods in the Applied Sciences, 2020
In this paper, we study one‐dimensional linear degenerate wave equations with a distributed controller. We establish observability inequalities for degenerate wave equation by multiplier method. We also deduce the exact controllability for degenerate wave equation by Hilbert uniqueness method when the control acts on the nondegenerate boundary ...
Jinyan Bai, Shugen Chai
openaire   +3 more sources

On the Stability of a Degenerate Wave Equation Under Fractional Feedbacks Acting on the Degenerate Boundary

Journal of Dynamical and Control Systems, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hanene Zerkouk   +2 more
openaire   +4 more sources

Indirect Internal Controllability of Weakly Coupled Degenerate Wave Equations

Acta Applicandae Mathematicae, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bai, Jinyan, Chai, Shugen, Guo, Zhiling
openaire   +1 more source

Electromagnetic wave equations for relativistically degenerate quantum magnetoplasmas

Physical Review E, 2010
A generalized set of nonlinear electromagnetic quantum hydrodynamic (QHD) equations is derived for a magnetized quantum plasma, including collisional, electron spin- 1/2, and relativistically degenerate electron pressure effects that are relevant for dense astrophysical systems, such as white dwarfs.
Masood, Waqas   +2 more
openaire   +3 more sources

Homogenization of Degenerate Wave Equations with Periodic Coefficients

SIAM Journal on Mathematical Analysis, 1993
Summary: The authors discuss homogenization of hyperbolic equations involving periodic coefficients which are degenerate relative to a certain direction. The general scheme by which effective equations are obtained is as the reiterated homogenization. The first step of the process leads to equations describing the oscillatory behavior in the direction ...
Amirat, Youcef   +2 more
openaire   +1 more source

Attractors for wave equations with degenerate memory

Journal of Differential Equations, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M.M. Cavalcanti, L.H. Fatori, T.F. Ma
openaire   +2 more sources

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