Results 171 to 180 of about 205,279 (307)

Vertical mergers without foreclosure

open access: yesJournal of Economics &Management Strategy, EarlyView.
Abstract The typical concern about vertical mergers is the foreclosure of downstream rivals. In a vertically related industry where downstream firms have a common supplier, margins can reveal whether upstream competition constrains that supplier.
Alessandro S. Kadner‐Graziano
wiley   +1 more source

Spatial and spatiotemporal volatility models: A review

open access: yesJournal of Economic Surveys, EarlyView.
Abstract Spatial and spatiotemporal volatility models are a class of models designed to capture spatial dependence in the volatility of spatial and spatiotemporal data. Spatial dependence in the volatility may arise due to spatial spillovers among locations; that is, in the case of positive spatial dependence, if two locations are in close proximity ...
Philipp Otto   +4 more
wiley   +1 more source

Algebraic Vortex Liquid in Spin-1/2Triangular Antiferromagnets: Scenario forCs2CuCl4 [PDF]

open access: green, 2005
Jason Alicea   +2 more
openalex   +1 more source

Jordan isomorphisms of triangular matrix algebras over a connected commutative ring

open access: bronze, 2000
К. И. Бейдар   +2 more
openalex   +1 more source

Topological Data Analysis Based Characteristics of Electroencephalogram Signals in Children With Sleep Apnea

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT This study aims to identify differences in the functional neural connectivity of the brain of paediatric patients with obstructive sleep apnea. Using EEG signals from 3673 paediatric patients, we grouped subjects into OSA or control groups based on sleep oxygen desaturation levels and apnea‐hypopnea index (AHI), and applied topological data ...
Aarti Sathyanarayana   +2 more
wiley   +1 more source

Non-additive Lie centralizer of strictly upper triangular matrices

open access: yesExtracta Mathematicae, 2019
Let F be a field of zero characteristic, let Nn (F ) denote the algebra of n × n strictly upper triangular matrices with entries in F , and let f : Nn (F ) → Nn (F ) be a non-additive Lie centralizer of Nn (F ) , that is, a map satisfying that f ([X, Y ])
Driss Aiat Hadj Ahmed
doaj  

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