Results 51 to 60 of about 523 (140)
Li-Yorke chaos in linear dynamics [PDF]
, 2015 We obtain new characterizations of Li Yorke chaos for linear operators on Banach and Fréchet spaces. We also offer conditions under which an operator admits a dense set or linear manifold of irregular vectors.
Bernardes, Nilson +3 more
core +1 more source
Large‐Dimensional Cointegrated Threshold Factor Models: The Global Term Structure of Interest Rates
Oxford Bulletin of Economics and Statistics, Volume 88, Issue 4, Page 677-689, August 2026.ABSTRACT In this paper we extend the two‐level factor model to account for cointegration between group‐specific factors in large datasets. We propose two nonlinear specifications: (i) a threshold vector error correction model (VECM) that allows for asymmetric adjustment across regimes; and (ii) a band VECM that captures state‐dependent adjustment which
Daniel Abreu, Paulo M. M. Rodrigues
wiley +1 more source
The Vegetated‐Canopy Roughness Sublayer Through a TKE‐Budget Lens
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 13, 16 July 2026.Abstract It is well understood that vegetated canopies perturb the atmospheric flow within and immediately above the canopy, deviating from the inertial sublayer (ISL) regime characteristic of non‐vegetated rough surfaces. Only above a certain height, denoted as the roughness sublayer height (RSL, z∗ ${z}_{\ast }$), do these flows return to ISL‐like ...
Giulia Salmaso, Raúl B. Cal, Marc Calaf
wiley +1 more source
Dynamical determinants and their applications [PDF]
This thesis is concerned with situations where we can define trace-class transfer oper- ators, and extract useful information from their determinants. The first topic is on Lyapunov exponents of random products of matrices.
Felton, Philip
core
A note about the spectrum of composition operators induced by a rotation [PDF]
, 2020 [EN] A characterization of those points of the unit circle which belong to the spectrum of a composition operator C phi, defined by a rotation phi (z)=rz with |r|=1, on the space H0(D) of all analytic functions which vanish at 0, is given.
Bonet Solves, José Antonio
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Ganikhodjaev\u27s conjecture on mean ergodicity of quadratic stochastic operators [PDF]
, 2019 A linear stochastic (Markov) operator is a positive linear contraction which preserves the simplex. A quadratic stochastic (nonlinear Markov) operator is a positive symmetric bilinear operator which preserves the simplex.
Saburov, Khikmat, Saburov, Mansoor
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Stability of operators and operator semigroups [PDF]
, 2010 This book is about stability of linear dynamical systems, discrete and continuous. More precisely, we discuss convergence to zero of strongly continuous semigroups of operators and of powers of a bounded linear operator, both with respect to different ...
Eisner, Tanja
core +1 more source
Ergodic theory of nonlinear markov operators with applications in nonlinear consensus problems [PDF]
, 2016 A consensus problem of multi-agent systems has been considered a dual problem to Markov chains. Historically, an idea of reaching consensus through linear repeated averaging was introduced by DeGroot (see [1]) for a structured time-invariant and ...
Saburov, Mansoor
core
The generalised Berger-Wang formula and the spectral radius of linear cocycles [PDF]
, 2019 Using ergodic theory we prove two formulae describing the relationships between different notions of joint spectral radius for sets of bounded linear operators acting on a Banach space. The first formula was previously obtained by V.S.
Morris, ID
core +1 more source
A Flea on Schroedinger's Cat [PDF]
, 2012 We propose a technical reformulation of the measurement problem of quantum mechanics, which is based on the postulate that the final state of a measurement is classical; this accords with experimental practice as well as with Bohr's views.
Landsman, Nicolaas P., Reuvers, Robin
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