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Displaying 41 – 60 of 80

On second order nonlinear equations with rectilinear characteristics.

Gvazava, J. (2000)

Georgian Mathematical Journal

On some multidimensional versions of a characteristic problem for second-order degenerating hyperbolic equations.

Kharibegashvili, S. (1998)

Georgian Mathematical Journal

On some variational inequalities for nonclassical type operators

Sergey Glazatov (1992)

Banach Center Publications

The purpose of this paper is to make a brief review of results obtained in the theory of variational inequalities for nonclassical operators, namely, of degenerate hyperbolic and variable type.

On the Dirichlet problem in a characteristic rectangle for fourth order linear singular hyperbolic equations.

Kiguradze, T. (1999)

Georgian Mathematical Journal

On the existence of solutions for some nondegenerate nonlinear wave equations of Kirchhoff type

Jong Yeoul Park, Jeong Ja Bae (2002)

Czechoslovak Mathematical Journal

Let $Ω$ be a bounded domain in $ℝ^{n}$ with a smooth boundary $Γ$ . In this work we study the existence of solutions for the following boundary value problem: $\frac{\partial^{2} y}{\partial t^{2}} - M (\int_{Ω} {| \nabla y |}^{2} d x) Δ y - \frac{\partial}{\partial t} Δ y = f (y) in Q = Ω \times (0, \infty), . 1 y = 0 in Σ_{1} = Γ_{1} \times (0, \infty), M (\int_{Ω} {| \nabla y |}^{2} d x) \frac{\partial y}{\partial ν} + \frac{\partial}{\partial t} (\frac{\partial y}{\partial ν}) = g in Σ_{0} = Γ_{0} \times (0, \infty), y (0) = y_{0}, \frac{\partial y}{\partial t} (0) = y_{1} in Ω, (1)$ where $M$ is a $C^{1}$ -function such that $M (λ) \geq λ_{0} > 0$ for every $λ \geq 0$ and $f (y) = {| y |}^{α} y$ for $α \geq 0$ .

On the Goursat problem for a second order equation.

Tarama, Shigeo (2002)

Electronic Journal of Differential Equations (EJDE) [electronic only]

On the solvability of a multidimensional version of the Goursat problem for a second order hyperbolic equation with characteristic degeneration.

Kharibegashvili, Sergo (1997)

Memoirs on Differential Equations and Mathematical Physics

On the solvability of the multidimensional version of the first Darboux problem for a model second-order degenerating hyperbolic equation.

Kharibegashvili, S. (1997)

Georgian Mathematical Journal

On the wellposedness in the Gevrey classes of the Cauchy problem for weakly hyperbolic equations whose coefficients are Hölder continuous in $t$ and degenerate in $t = T$

Tamotu Kinoshita (1998)

Rendiconti del Seminario Matematico della Università di Padova

On weak solutions of semilinear hyperbolic-parabolic equations.

Ferreira, Jorge (1996)

International Journal of Mathematics and Mathematical Sciences

Perturbations singulières d'équations hyperboliques du second ordre non linéaires

Brahim Hajouj (2000)

Annales mathématiques Blaise Pascal

Perturbations singulières pour une équation hyperbolique dégénérée

Brahim Hajouj, Monique Madaune-Tort (2001)

Annales de la Faculté des sciences de Toulouse : Mathématiques

Problème de Cauchy pour des opérateurs fuchsiens

Antonio Bove (1984)

Journées équations aux dérivées partielles

Representation theorem for the solution of weakly hyperbolic equations with fast oscillating coefficients

Tamotu Kinoshita, Karen Yagdjian (2003)

Banach Center Publications

Singularity formation in systems of non-strictly hyperbolic equations.

Saxton, R., Vinod, V. (1995)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Some remarks on a second order evolution equation.

Aassila, Mohammed (1998)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Some remarks on global solutions to nonlinear dissipative mildly degenerate Kirchhoff strings

Marina Ghisi (2001)

Rendiconti del Seminario Matematico della Università di Padova

Strong global attractor for a quasilinear nonlocal wave equation on $ℝ^{N}$ .

Papadopoulos, Perikles G., Stavrakakis, Nikolaos M. (2006)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Teorema di Nash-Moser ed equazioni iperboliche non lineari

Mariagrazia Di Flaviano (2000)

Bollettino dell'Unione Matematica Italiana

The critical case for a semilinear weakly hyperbolic equation.

Fanelli, Luca, Lucente, Sandra (2004)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Currently displaying 41 – 60 of 80

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