Results 91 to 100 of about 121,750 (289)

Inter‐platform ecosystems

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary We extend ecosystem theory to cases in which platforms are complementors to each other: inter‐platform ecosystems. Analyzing web traffic data on 241 European platforms, we identify and characterize demand‐side inter‐platform ecosystems, and propose a theory of why they emerge.
Bruno Carballa‐Smichowski   +3 more
wiley   +1 more source

Constructibility in the Simpson Set Theory Without the Local Countability Axiom

open access: yesMathematics
Following some ideas and constructions of Simpson, we introduce a set theory whichextends the Zermelo theory taken without the Power Set axiom by the three axioms postulating that, (1) for any set, there exists a set containing all finite subsets of the ...
Vladimir Kanovei, Vassily Lyubetsky
doaj   +1 more source

Transitivity of the εm-relation on (m-idempotent) hyperrings

open access: yesOpen Mathematics, 2018
On a general hyperring, there is a fundamental relation, denoted γ*, such that the quotient set is a classical ring. In a previous paper, the authors defined the relation εm on general hyperrings, proving that its transitive closure εm∗$\begin{array}{} \
Norouzi Morteza, Cristea Irina
doaj   +1 more source

Extending Structured Dialogic Design With Multi‐Criteria Evaluation: Toward Sustainable Multi‐Species Governance

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT This paper presents an innovative integration of structured democratic dialogue with a multi‐criteria evaluation step designed to strengthen participatory decision‐making for complex socio‐ecological challenges. Conducted virtually with Communities of Practice focused on multi‐species governance, the process combined systemic mapping of ...
Yiannis Laouris   +8 more
wiley   +1 more source

Tuples of Operators with Hereditarily Transitivity Property

open access: yesJournal of Mathematical Extension, 2013
In this paper, we investigate the relation between hypercyclicity and d-dense orbits of a tuple of operators.
B. Yousefi∗, K. Jahedi
doaj  

Continuous representability of interval orders

open access: yesApplied General Topology, 2004
In the framework of the analysis of orderings whose associated indifference relation is not necessarily transitive, we study the structure of an interval order, and its representability through a pair of continuous real-valued functions.
Juan C. Candeal   +2 more
doaj   +1 more source

A Bird's Eye View of English Grammar: Connecting the Dots in Two Dimensions

open access: yesTESOL Quarterly, EarlyView.
Abstract Over the past few decades, discussions on grammar instruction have primarily focused on teaching methodologies, such as whether grammar should be taught explicitly or implicitly, and whether the focus should be on form or forms. This paper, however, shifts the focus to grammar itself, aiming to provide a “shape” for pedagogical grammar.
Akira Tajino, Yoshitaka Kato
wiley   +1 more source

Social network dynamics under experimental manipulations of predation risk and food abundance in wild rock hyraxes

open access: yesJournal of Animal Ecology, EarlyView.
This study combines replicated experimental manipulation, social network analysis, network permutations and meta‐analysis to disentangle active from spatially‐induced changes in animal network structure in the wild. It reveals that short‐term environmental changes primarily alter space use, with limited effects on social structure.
Camille N. M. Bordes   +6 more
wiley   +1 more source

Biased representation of homothetic preferences on homogeneous sets [PDF]

open access: yes
In the homogeneous case of one-dimensional objects, we show that any preference relation that is positive and homothetic can be represented by a quantitative utility function and unique bias.
Bertrand Lemaire, Marc Le Menestrel
core  

Dendrites, Topological Graphs, and 2-Dominance [PDF]

open access: yes, 2009
For each positive ordinal α, the reflexive and transitive binary relation of α-dominance between compacta was first defined in our paper [Mapping properties of co-existentially closed continua, Houston J.
Bankston, Paul
core   +1 more source

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