Results 51 to 60 of about 61,413 (290)
Weak topologies for Carath\'eodory differential equations. Continuous dependence, exponential Dichotomy and attractors [PDF]
, 2018 We introduce new weak topologies and spaces of Carath\'eodory functions where the solutions of the ordinary differential equations depend continuously on the initial data and vector fields.
Longo, Iacopo P. +2 more
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The Existence of Weak D-Pullback Exponential Attractor for Nonautonomous Dynamical System
The Scientific World Journal, 2016 First, for a process U(t,τ)∣t≥τ, we introduce a new concept, called the weak D-pullback exponential attractor, which is a family of sets M(t)∣t≤T, for any T∈R, satisfying the following: (i) M(t) is compact, (ii) M(t) is positively invariant, that is, U(t,
Yongjun Li, Xiaona Wei, Yanhong Zhang
doaj +1 more source
Vector bundles and blowups [PDF]
, 2017 Let X be a nonsingular quasi-projective complex algebraic variety and let E be an algebraic vector bundle on X of rank r ≥ 2. The pullback of E by the blowup of X at a suitably chosen nonsingular subvariety of X of codimension r contains a line subbundle
Jelonek, Zbigniew +2 more
core +2 more sources
Pullback measure attractors for non-autonomous stochastic lattice systems
Proceedings of the Royal Society of Edinburgh: Section A MathematicsThe aim of this article is to study the asymptotic behaviour of non-autonomous stochastic lattice systems. We first show the existence and uniqueness of a pullback measure attractor.
Shaoyue Mi, Dingshi Li, Tianhao Zeng
semanticscholar +1 more source
The structure and stability of pullback attractors for 3D Brinkman-Forchheimer equation with delay
Electronic Research Archive, 2020 This paper concerns the stability of pullback attractors for 3D Brinkman-Forchheimer equation with delays. By some regular estimates and the variable index to deal with the delay term, we get the sufficient conditions for asymptotic stability of ...
Xinguang Yang +3 more
semanticscholar +1 more source
W-JAFFARD DOMAINS IN PULLBACKS [PDF]
Journal of Algebra and Its Applications, 2012 In this paper we study the class of w-Jaffard domains in pullback constructions, and give new examples of these domains. In particular we give examples to show that the two classes of w-Jaffard and Jaffard domains are incomparable. As another application, we establish that for each pair of positive integers (n, m) with n + 1 ≤ m ≤ 2n + 1, there is an (
openaire +3 more sources
Perinormality in pullbacks [PDF]
Journal of Commutative Algebra, 2019 We further develop the notion of perinormality from our last paper, showing that it is preserved by many pullback constructions. In doing so, we introduce the concepts of relative perinormality and fragility for ring extensions.
Epstein, Neil, Shapiro, Jay
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Pullback dynamics and robustness for the 3D Navier-Stokes-Voigt equations with memory
Electronic Research Archive, 2023 The tempered pullback dynamics and robustness of the 3D Navier-Stokes-Voigt equations with memory and perturbed external force are considered in this paper.
Keqin Su, Rong Yang
doaj +1 more source
Communications on Pure and Applied Analysis, 2020 This paper is devoted to study the asymptotic behavior of a non-autonomous mixture problem in one dimensional solids with nonlinear damping. We prove the existence of minimal pullback attractors with respect to a universe of tempered sets defined by the ...
M. Freitas, A. L. Costa, G. Araújo
semanticscholar +1 more source
On t-reductions of ideals in pullbacks
, 2016 This paper investigates t-reductions of ideals in pullback constructions. Section 2 examines the correlation between the notions of reduction and t-reduction in pseudo-valuation domains. Section 3 solves an open problem on whether the finite t-basic and v-basic ideal properties are distinct.
Kabbaj, S., Kadri, A., Mimouni, A.
openaire +3 more sources