Results 81 to 90 of about 2,908 (221)

A viability result for second-order differential inclusions

open access: yesElectronic Journal of Differential Equations, 2002
We prove a viability result for the second-order differential inclusion $$ x''in F(x,x'),quad (x(0), x'(0))=(x_0,y_0)in Q:=Kimes Omega, $$ where $K$ is a closed and $Omega$ is an open subsets of $mathbb{R}^m$, and is an upper semicontinuous set-valued ...
Vasile Lupulescu
doaj  

On the Dini-Hadamard subdifferential of the difference of two functions

open access: yes
Fréchet ε-subdifferential, Dini-Hadamard ε-subdifferential, Sponge, Approximately starshaped functions, Directionally approximately starshaped functions, Cone-constrained nonsmooth nonconvex optimization problems, Optimality conditions in subdifferential
Delia-Maria Nechita, Radu Boţ
core   +1 more source

Existence of infinitely many periodic subharmonic solutions for nonlinear non-autonomous neutral differential equations

open access: yesElectronic Journal of Differential Equations, 2013
In this article, we study the existence of an infinite number of subharmonic periodic solutions to a class of second-order neutral nonlinear functional differential equations.
Xiao-Bao Shu, Yongzeng Lai, Fei Xu
doaj  

OPTIMIZATION OF DIFFERENTIAL INCLUSIONS OF PARABOLIC TYPE

open access: yesElectrica, 2003
Sufficient conditions for optimality are derived for the problems under consideration on the basis of the apparatues of locally conjugate mappings.  
E. N. MAHMUDOV
doaj   +2 more sources

A THEOREM ON THE SUBDIFFERENTIAL CALCULATION

open access: yesDemonstratio Mathematica, 1988
Let X, Y be Banach spaces, \(a\in Y\), \(\Lambda\in {\mathcal L}(X,Y)\), Im \(\Lambda\) closed in Y. Let F: \(Y\to \bar R\) be a proper convex function. If F is continuous in at least one point of Im \(\Lambda\) \(+a\), and \(G(x)=F(\Lambda x+a)\), then we prove that \(\partial G(x)=\Lambda^*F(\Lambda x+a)\), where \(\Lambda^*\) is the conjugate of ...
openaire   +1 more source

Stability of equilibria via regularity of the diagonal subdifferential operator

open access: yes, 2017
In this paper we investigate the Aubin property of the solution map of a parametric equilibrium problem, by providing a connection with a suitable behaviour of the diagonal subdifferential operator associated to the equilibrium bifunction.
M. Bianchi
core   +1 more source

On a time-dependent subdifferential evolution inclusion with a nonconvex upper-semicontinuous perturbation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2005
We investigate the existence of local approximate and strong solutions for a time-dependent subdifferential evolution inclusion with a nonconvex upper-semicontinuous perturbation.
S. Guillaume, A. Syam
doaj   +1 more source

Subdifferential Regularity of Directionally Lipschitzian Functions

open access: yes, 2000
Formulas for the Clarke subdifferential are always expressed in the form of inclusion. The equality form in these formulas generally requires the functions to be directionally regular. This paper studies the directional regularity of the general class of
L. Thibault, M. Bounkhel
core   +1 more source

Infimal convolution and optimal time control problem II: limiting subdifferential [PDF]

open access: yes, 2017
This paper is the continuation of our study of a general minimal time problem with a convex constant dynamics and a lower semicontinuous extended real-valued target function defined on a Banach space.
Ivanov, Grigorii   +4 more
core   +1 more source

Some properties of the weak subdifferential

open access: yes, 2010
Some properties of the weak subdifferential is considered in this paper. By using definitioan and properties of the weak subdifferential which described in the papers [1, 2, 3], the author prove some theorem connectiong weak subdifferential in nonsmooth ...
Gurbuz, E., Sengul, M., Maharramov, S.F.
core  

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