Wachstumsordnung und Index der Lösungen linearer Differentialgleichungen mit rationalen Koeffizienten.
Weak solution for fractional order integral equations in reflexive Banach spaces
Weak solutions of differential equations in Banach spaces
In this paper we prove a theorem for the existence of pseudo-solutions to the Cauchy problem, x' = f(t,x), x(0) = x₀ in Banach spaces. The function f will be assumed Pettis-integrable, but this assumption is not sufficient for the existence of solutions. We impose a weak compactness type condition expressed in terms of measures of weak noncompactness. We show that under some additionally assumptions our solutions are, in fact, weak solutions or even strong solutions. Thus, our theorem is an essential...
Weak solutions to differential equations with left and right fractional derivatives defined on
Weighted Cauchy-type problem of a functional differ-integral equation.
Weighted derivative and differential equations.
Weighted estimates for differential operators with operator-valued coefficients
Weighted -asymptotically -periodic solutions of a class of fractional differential equations.
Well posedness and control of semilinear wave equations with iterated logarithms
Motivated by a classical work of Erdős we give rather precise necessary and sufficient growth conditions on the nonlinearity in a semilinear wave equation in order to have global existence for all initial data. Then we improve some former exact controllability theorems of Imanuvilov and Zuazua.
Well posedness for evolution inclusions.
What do Multistep Methods Approximate?
Wirtinger inequality and nonlinear differential systems
Picone identity for a class of nonlinear differential equations is established and various qualitative results (such as Wirtinger-type inequality and the existence of zeros of first components of solutions) are obtained with the help of this new formula.
Wrapped eigenstructure of chaos
Wronskians and subspaces of certain fourth order differential equations.