Results 41 to 50 of about 56,089 (229)

W-JAFFARD DOMAINS IN PULLBACKS [PDF]

open access: yesJournal 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

The Existence of Weak D-Pullback Exponential Attractor for Nonautonomous Dynamical System

open access: yesThe 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

Criteria for strong and weak random attractors

open access: yes, 2008
The theory of random attractors has different notions of attraction, amongst them pullback attraction and weak attraction. We investigate necessary and sufficient conditions for the existence of pullback attractors as well as of weak ...
B. Schmalfuß   +19 more
core   +1 more source

Coherentlike conditions in pullbacks.

open access: yesMichigan Mathematical Journal, 1997
Let \(M\) be a (nonzero) maximal ideal of a domain \(T\), let \(k=T/M\) be the residue field, let \(\varphi: T\to k\) be the natural projection, and let \(D\) be a proper subring of \(k\). Let \(R= \varphi^{-1} (D)\) be the domain arising from the following pullback of canonical homomorphisms: \[ \begin{matrix} R & \to & D \\ \downarrow & & \downarrow \
Gabelli, Stefania, Houston, Evan
openaire   +2 more sources

Pullback incremental attraction

open access: yesNonautonomous Dynamical Systems, 2014
AbstractA pullback incremental attraction, a nonautonomous version of incremental stability, is introduced for nonautonomous systems that may have unbounded limiting solutions.
Kloeden Peter E., Lorenz Thomas
openaire   +2 more sources

Compactified universal jacobian and the double ramification cycle

open access: yes, 2015
Using the compactified universal jacobian over the moduli space of stable marked curves, we give an expression in terms of natural classes of the zero section of the compactified universal jacobian the (rational) Chow ring.
Dudin, Bashar
core   +1 more source

Patient‐Mounted Neuro Optical Coherence Tomography for Targeted Minimally Invasive Micro‐Resolution Volumetric Imaging in Brain In Vivo

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Herein, a patient‐mounted neuro optical coherence tomography system that integrates a 5 degrees‐of‐freedom skull‐mounted robot (Skullbot) with a 0.6 mm neuroendoscope for targeted, minimally invasive deep brain imaging, is developed. The system offers high‐resolution imaging with precise deployment, demonstrated through successful tumor imaging in a ...
Chao Xu   +7 more
wiley   +1 more source

Random attractors for non-autonomous stochastic plate equations with multiplicative noise and nonlinear damping

open access: yesAIMS Mathematics, 2020
Based on the abstract theory of pullback attractors of non-autonomous non-compact dynamical systems by differential equations with both dependent-time deterministic and stochastic forcing terms, which introduced by B.
Xiaobin Yao
doaj   +1 more source

Effect of Pullback Speed and the Distance between the Skin and Vein on the Performance of Endovenous Laser Treatment by Numerical Simulation [PDF]

open access: yesIranian Journal of Medical Physics, 2018
Introduction: Endovenous laser treatment (ELT) is a new treatment method for the reflux of the great saphenous vein. A successful ELT is dependent on the selection of optimum parameters required to achieve optimal vein damage while avoiding side effects ...
Alireza Rezvani-sharif, Malikeh Nabaei
doaj   +1 more source

Bench Testing Analysis of Perforation Management in the Setting of Bifurcation Coronary Intervention

open access: yesCatheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Management of coronary perforation in bifurcation lesions with covered stents remains challenging. Aims We aimed to describe a proper practice and toolbox for “jailed‐branch” management after covered stent deployment. Methods Using a bench model, we tested various wires with a 120° angulated microcatheter for their ability to ...
Rayyan Hemetsberger   +11 more
wiley   +1 more source

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