Results 11 to 20 of about 145,745 (278)

Existence for Nonlinear Evolution Equations and Application to Degenerate Parabolic Equation [PDF]

open access: yesJournal of Applied Mathematics, 2014
We consider an abstract Cauchy problem for a doubly nonlinear evolution equation of the form d/dt𝒜u+ℬu∋ft in V′, t∈0, T, where V is a real reflexive Banach space, 𝒜 and ℬ are maximal monotone operators (possibly multivalued) from V to its dual V′.
Ning Su, Li Zhang
doaj   +4 more sources

On a Nonlinear Degenerate Evolution Equation with Nonlinear Boundary Damping [PDF]

open access: yesJournal of Applied Mathematics, 2015
This paper deals essentially with a nonlinear degenerate evolution equation of the form Ku″-Δu+∑j=1nbj∂u′/∂xj+uσu=0 supplemented with nonlinear boundary conditions of Neumann type given by ∂u/∂ν+h·, u′=0.
A. T. Lourêdo   +2 more
doaj   +4 more sources

A Class of Fractional Degenerate Evolution Equations with Delay [PDF]

open access: yesMathematics, 2020
We establish a class of degenerate fractional differential equations involving delay arguments in Banach spaces. The system endowed by a given background and the generalized Showalter–Sidorov conditions which are natural for degenerate type equations. We
Amar Debbouche, Vladimir E. Fedorov
doaj   +2 more sources

On Solvability of Degenerate Linear Evolution Equations with Memory Effects

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2014
By the methods of the operators semigroups theory a degenerate linear evolution equation with memory in a Banach space is reduced to a system of two equations.
V.E. Fedorov, L.V. Borel
doaj   +2 more sources

Degenerate Evolution Equations in Hilbert Space [PDF]

open access: yesTransactions of the American Mathematical Society, 1971
We consider the degenerate evolution equation c 1 ( t ) d u / d t + c 2 ( t ) A ( t ) u = f ( t
Friedman, Avner, Schuss, Zeev
openaire   +2 more sources

Quasilinear degenerate evolution equations in Banach spaces [PDF]

open access: yesJournal of Evolution Equations, 2004
The paper is concerned with the Cauchy problem for the quasilinear degenerate evolution equation of parabolic type in a Banach space \(X\): \[ {{dMv}\over{dt}} +L(Mv)v=F(Mv), \quad \;Mv(0)=u_0, \quad ...
FAVINI, ANGELO, A. Yagi
openaire   +2 more sources

Two-Scale Homogenization of Implicit Degenerate Evolution Equations

open access: yesJournal of Mathematical Analysis and Applications, 1997
In the framework of two-scale convergence for homogenization of partial differential equations with periodic coefficients, the authors show how the two-scale method can also be applied to evolution equations, including degenerate and implicit equations, where the coefficients are \(\varepsilon\)-periodic in the space variable.
Clark, G.W., Packer, L.A.
openaire   +2 more sources

Multi-Term Fractional Degenerate Evolution Equations and Optimal Control Problems

open access: yesMathematics, 2020
A theorem on unique solvability in the sense of the strong solutions is proved for a class of degenerate multi-term fractional equations in Banach spaces.
Marina Plekhanova, Guzel Baybulatova
doaj   +1 more source

Gauge-Invariant Initial Conditions and Early Time Perturbations in Quintessence Universes [PDF]

open access: yes, 2003
We present a systematic treatment of the initial conditions and evolution of cosmological perturbations in a universe containing photons, baryons, neutrinos, cold dark matter, and a scalar quintessence field.
A.K. Rebhan   +32 more
core   +3 more sources

On a nonlinear degenerate evolution equation with strong damping

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
In this paper we consider the nonlinear degenerate evolution equation with strong damping,(*)      {K(x,t)utt−Δu−Δut+F(u)=0   in   Q=Ω×]0,T[u(x,0)=u0,   (ku′)(x,0)=0   in   Ωu(x,t)=0           on   ∑=Γ×]0,T[where K is a function with K(x,t)≥0, K(x,0)=0 ...
Jorge Ferreira   +1 more
doaj   +1 more source

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