Results 21 to 30 of about 44,722 (216)
Mathematics, 2023 The definition of geostatistical domains is a stage in the estimation of mineral resources, in which a sample resulting from a mining exploration process is divided into zones that show homogeneity or minimal variation in the main element of interest or ...
Heber Hernández +3 more
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Stationarity, non-stationarity and early warning signals in economic networks [PDF]
Journal of Complex Networks, 2014 Economic integration, globalization and financial crises represent examples of processes whose understanding requires the analysis of the underlying network structure. Of particular interest is establishing whether a real economic network is in a state of (quasi)stationary equilibrium, i.e.
Tiziano Squartini, Diego Garlaschelli
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Strong Stationarity Conditions for Optimal Control Problems Governed by a Rate-Independent Evolution Variational Inequality [PDF]
, 2023 We prove strong stationarity conditions for optimal control problems that are governed by a prototypical rate-independent evolution variational inequality, i.e., first-order necessary optimality conditions in the form of a primal-dual multiplier system ...
Christof, Constantin +3 more
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Wavelet Density and Regression Estimators for Functional Stationary and Ergodic Data: Discrete Time
Mathematics, 2022 The nonparametric estimation of density and regression function based on functional stationary processes using wavelet bases for Hilbert spaces of functions is investigated in this paper. The mean integrated square error over adapted decomposition spaces
Sultana DIDI +2 more
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Asymptotic Analysis of Poverty Dynamics via Feller Semigroups
MathematicsPoverty is a multifaceted phenomenon impacting millions globally, defined by a deficiency in both material and immaterial resources, which consequently restricts access to satisfactory living conditions. Comprehensive poverty analysis can be accomplished
Lahcen Boulaasair +2 more
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Quantifying Non-Stationarity with Information Theory
Entropy, 2021 We introduce an index based on information theory to quantify the stationarity of a stochastic process. The index compares on the one hand the information contained in the increment at the time scale τ of the process at time t with, on the other hand ...
Carlos Granero-Belinchón +2 more
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ON SINGULAR STATIONARITY II (TIGHT STATIONARITY AND EXTENDERS-BASED METHODS) [PDF]
The Journal of Symbolic Logic, 2019 AbstractWe study the notion of tightly stationary sets which was introduced by Foreman and Magidor in [8]. We obtain two consistency results showing that certain sequences of regular cardinals${\langle {\kappa _n}\rangle _{n < \omega }}$can have the property that in some generic extension, every ground-model sequence of fixed-cofinality stationary ...
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Stationarity of multivariate particle systems [PDF]
, 2013 A particle system is a family of i.i.d. stochastic processes with values translated by Poisson points. We obtain conditions that ensure the stationarity in time of the particle system in RdRd and in some cases provide a full characterisation of the ...
Stucki, Kaspar +3 more
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Mathematics, 2022 In this study, we look at the wavelet basis for the nonparametric estimation of density and regression functions for continuous functional stationary processes in Hilbert space. The mean integrated squared error for a small subset is established.
Sultana Didi, Salim Bouzebda
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On singular stationarity I (mutual stationarity and ideal-based methods) [PDF]
Advances in Mathematics, 2019 We study several ideal-based constructions in the context of singular stationarity. By combining methods of strong ideals, supercompact embeddings, and Prikry-type posets, we obtain three consistency results concerning mutually stationary sets, and answer a question of Foreman and Magidor concerning stationary sequences on the first uncountable ...
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