Results 11 to 20 of about 263,107 (285)

Quantitative Identification of Rural Functions Based on Big Data: A Case Study of Dujiangyan Irrigation District in Chengdu

open access: yesLand, 2022
Urbanization increases the scales of urban spaces and the sizes of their populations, causing the functions in cities and towns to be in short supply. This study carries out functional space identification on the Dujiangyan elite irrigation area based on
Qidi Dong   +4 more
doaj   +1 more source

First-countable Lindelöf scattered spaces

open access: yesTopology and its Applications, 2022
We study the class of first-countable Lindelöf scattered spaces, or "FLS" spaces. While every $T_3$ FLS space is homeomorphic to a scattered subspace of $\mathbb Q$, the class of $T_2$ FLS spaces turns out to be surprisingly rich. Our investigation of these spaces reveals close ties to $Q$-sets, Lusin sets, and their relatives, and to the cardinals ...
Banakh, Taras   +2 more
openaire   +3 more sources

Soliton Scattering in Noncommutative Spaces [PDF]

open access: yesTheoretical and Mathematical Physics, 2018
We discuss exact multi-soliton solutions to integrable hierarchies on noncommutative space-times in diverse dimension. The solutions are represented by quasi-determinants in compact forms. We study soliton scattering processes in the asymptotic region where the configurations could be real-valued.
Hamanaka, M., Okabe, H.
openaire   +2 more sources

La métro-périurbanisation comme nouveau paradigme ?

open access: yesProjets de Paysage, 2012
Stigmatized for a long time, the knowledge of the periurbanized spaces was essentially approached through a series of all-embracing, sometimes ideological presuppositions, ignoring the variety of the urban and social dynamics at work.
Émeline Bailly, Hervé Duret
doaj   +1 more source

Evolution and Influencing Factors of Manufacturing Production Space in the Pearl River Delta—Based on the Perspective of Global City-Region

open access: yesLand, 2023
Evolution and influencing factors of manufacturing production spaces in the global city regions of China are diverse from the West, attracting attention to accurately identify and analyze the real and continuous distribution of manufacturing production ...
Bo Liu, Desheng Xue, Sijun Zheng
doaj   +1 more source

On spaces whose nowhere dense subsets are scattered

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1998
The aim of this paper is to study the class of N-scattered spaces, i.e. the spaces whose nowhere dense subsets are scattered. The concept was recently used in a decomposition of scatteredness — a topological space (X,τ) is scattered if and only if X ...
Julian Dontchev, David Rose
doaj   +1 more source

Fan-Gottesman Compactification and Scattered Spaces

open access: yesApplied Mathematics and Nonlinear Sciences, 2020
Abstract Compactification is the process or result of making a topological space into a compact space. An embedding of a topological space X as a dense subset of a compact space is called a compactification of X. There are a lot of compactification methods but we study with Fan- Gottesman compactification.
UĞUR, TAMER, ELMALI, CEREN SULTAN
openaire   +4 more sources

Vietoris topology on spaces dominated by second countable ones

open access: yesOpen Mathematics, 2015
For a given space X let C(X) be the family of all compact subsets of X. A space X is dominated by a space M if X has an M-ordered compact cover, this means that there exists a family F = {FK : K ∈ C(M)} ⊂ C(X) such that ∪ F = X and K ⊂ L implies that FK ⊂
Islas Carlos, Jardon Daniel
doaj   +1 more source

Derived length for arbitrary topological spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
The notion of derived length is as old as that of ordinal numbers itself. It is also known as the Cantor-Bendixon length. It is defined only for dispersed (that is scattered) spaces.
A. J. Jayanthan
doaj   +1 more source

A Banach Space Regularization Approach for Multifrequency Microwave Imaging

open access: yesInternational Journal of Antennas and Propagation, 2016
A method for microwave imaging of dielectric targets is proposed. It is based on a tomographic approach in which the field scattered by an unknown target (and collected in a proper observation domain) is inverted by using an inexact-Newton method ...
Claudio Estatico   +3 more
doaj   +1 more source

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