Hasil untuk "math.DS"

I. Dimitrijevic, B. Dragovich, Z. Rakic et al.

Majid Akbarian

This paper propose new sufficient conditions for stability analysis for non autonomous systems.

Lai Kun Tong, Ming Xia Zhu, Si Chen Wang et al.

AbstractBackgroundCaring is the essence and core of nursing. Current studies on the effect of gender on nurses’ perception of caring have been inconsistent. Most of these studies were quantitative and conducted before the COVID-19 pandemic. The study aimed to explore the gender similarities and differences in nurses’ perception of caring during the COVID-19 pandemic.MethodsIn 2020, a cross-sectional mixed-method study was conducted in 11 cities in China using structured online questionnaire (n = 8030) and face-to-face individual interview (n = 42). Data collection tools included the Caring Dimensions Inventory and semi-structured interview.ResultsIn stepwise multivariable linear regression analysis, female nurses scored 1.93 points higher on caring than male nurses, after completely controlling for the other factors. The interview results showed that both male and female nurses agreed that caring was to deal with three kinds of relationships, namely nurses and people, nurses and themselves, nurses and society. There were gender differences in the connotation of caring between nurses and themselves, but not in the connotations of caring between other relationships. The ranking of the importance of caring connotations among these relationships showed no gender difference except between nurses and themselves.ConclusionThe quantitative findings suggest that gender influences nurses’ perception of caring. The qualitative findings demonstrate that nurses regard themselves as both recipients and implementers of caring. The qualitative results indicate nurses of different genders have similarities and differences in their perception of caring, and the biggest difference lies in the relationship between nurses and themselves.

Paulo Sad

An example is given of a divisor of a curve which is not a trace divisor of a foliation.

Abed Bounemoura

We propose a slight correction and a slight improvement on the main result contained in "A lecture on Classical KAM Theorem" by J. P{ö}schel.

Adam Kanigowski, Mariusz Lemańczyk

This is a survey on spectral theory of dynamical systems.

Joel Antonio-Vásquez

The purpose of this survey is to present the recent advances about the Pollicott-Ruelle resonances.

Julien Brémont

We study the recurrence properties of a random walk in a stratified medium.

Scot Adams

We provide a counterexample to P.~Olver's freeness conjecture for $C^ω$ transformations.

Andrés Navas

We extend to the critical (intermediate) regularity several results concerning rigidity for centralizers and group actions on the interval.

Andrey Popescou

This paper has been withdrawn by the author due to errors and bad formalization.

John Milnor

This note will study complex polynomial maps of degree $n\ge 2$ with only one critical point.

Alfonso Artigue

We show that every positive expansive flow on a compact metric space consists of a finite number of periodic orbits and fixed points.

Tomasz Downarowicz

Using methods of ergodic theory we prove as in the title.

Francois Ledrappier

We characterize symmetric spaces of non-positive curvature by the equality case of general inequalities between geometric quantities

Adam Epstein

We give an arithmetic proof of rigidity for postcritically finite polynomials.

Mauricio Garay

The paper is concerned with group actions, in the context of analytic dynamical systems.

Jon Chaika

This paper uses a construction of M. Keane to show that there exists a topologically mixing interval exchange transformation.

Marc Reversat

We give a description of the rational representations of the differential Galois group of a Picard-Vessiot extension.

J. Foster

AbstractSome topological identifications are introduced into the DS-spaces of Robinson and Trautman, and the symmetry and asymptotic symmetry groups of the resulting spaces are calculated. The latter have structures similar to the GBM group, each being the semi-direct product of a group of supertranslations by a group of classical type.