Results 101 to 110 of about 3,841,232 (240)

Not OCA and products of Frechet spaces

We continue the investigation of the question of whether the product of two countable Fréchet spaces must be M-separable. We are especially interested in this question in the presence of Martin's Axiom. The question has been shown to be independent of Martin's Axiom but only in models in which $\mathfrak c\leqω_2$.
openaire   +2 more sources

Labor Market Monopsony Power and the Dynamic Gains to Openness Reforms

International Economic Review, EarlyView.
ABSTRACT We embed labor market monopsony into a dynamic heterogeneous‐firm general equilibrium model with exporting, horizontal FDI, and rich firm lifecycle dynamics. Rising marginal costs with monopsony slow and limit incumbent firm growth in response to liberalization, shifting adjustment to the extensive margin.
Priyaranjan Jha, Antonio Rodriguez‐Lopez, Adam Hal Spencer   +2 more
wiley   +1 more source

On I-Fréchet-Urysohn spaces and sequential I-convergence groups [PDF]

Mathematica Moravica, 2019
In this paper, we introduce the concept of sequential I-convergence spaces and I-Fréchet-Urysohn space and study their properties. We give a sufficient condition for the product of two sequential I-convergence spaces to be a sequential I-convergence ...
Renukadevi V., Vijayashanthi P.
doaj  

WEAKLY COMPACTLY GENERATED FRECHET SPACES

, 2014
. It is proved that a weakly compact generated Frechet space is LindelBf in the weak topology. As a corollary it is proved that for a finite measure space every weakly measurable function into a weakly compactly gener-ated Frechet space is weakly equ ...
Surjit Singh Khurana
core  

Connectivity and Selective Rural Migration

International Economic Review, EarlyView.
ABSTRACT How does infrastructure shape rural development? Using household panel data from a nationally representative sample of Chinese villages, matched to high‐resolution highway maps, we find that road expansion between 2000 and 2015 operates mainly through reallocation, with less productive farmers scaling down or exiting and more productive ...
Lin Ma, Yuan Mei, Qunfeng Wu, Mingzhi (Jimmy) Xu   +3 more
wiley   +1 more source

Density‐Valued ARMA Models by Spline Mixtures

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
wiley   +1 more source

Functional analytic approach on time optimal control problem in frechet space using graph of linear transformation

This paper investigates the minimum-time optimal control problem in a Frechet graph space GT associated with a continuous linear transformation T : F × I → X, where F is a Frechet space, I = [t0, t1] is the time interval, and X is the ...
Zeeshana Zahoor, Gargi Chakraborty
core   +1 more source

A Note on Local Polynomial Regression for Time Series in Banach Spaces

Journal of Time Series Analysis, EarlyView.
ABSTRACT This work extends local polynomial regression to Banach space‐valued time series for estimating smoothly varying means and their derivatives in non‐stationary data. The asymptotic properties of both the standard and bias‐reduced Jackknife estimators are analyzed under mild moment conditions, establishing their convergence rates.
Florian Heinrichs
wiley   +1 more source

Local subdifferentials and multivariational inequalities in Banach and Frechet spaces [PDF]

Opuscula Mathematica, 2008
Some functional-topological concepts of subdifferential and locally subdifferential maps in Frechet spaces are established. Multivariational inequalities with an operator of the pseudo-monotone type, connected with subdifferential maps, are considered.
Pavlo O. Kasyanov, Valery S. Mel'nik, Anna M. Piccirillo   +2 more
doaj  

Sequential Outlier Detection in Nonstationary Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs, Patrick Bastian, Holger Dette   +2 more
wiley   +1 more source