Results 31 to 40 of about 23,064 (196)
General and consistent statistics for cosmological observations
Physical Review Research, 2020 This paper focuses on two aspects of the statistics of cosmological observables that are important for the next stages of precision cosmology. First, we note that the theory of reduced angular N-point spectra has only been developed in detail up to the ...
Ermis Mitsou +4 more
doaj +1 more source
Nörlund means of the sequence of the iterates of a bounded linear operator, and spectral properties [PDF]
Mathematica BohemicaWe are concerned here with relating the spectral properties of a bounded linear operator $T$ on a Banach space to the behaviour of the means $(1/{s(n)})\sum_{k=0}^n(\Delta s)(n-k)T^k$, where $s$ is a nondecreasing sequence of positive real numbers, and $\
Laura Burlando
doaj +1 more source
Fluctuations of ergodic averages
Illinois Journal of Mathematics, 1999 The goal of the paper is to get some universal estimates for the probability that there are many fluctuations in the ergodic averages. The methods involve an effective Vitali type covering theorem and are valid for \(\mathbb{Z}^d\) actions, for any \(d\in\mathbb{N}\). Theorem.
Kalikow, Steven, Weiss, Benjamin
openaire +3 more sources
Finite-range viscoelastic subdiffusion in disordered systems with inclusion of inertial effects
New Journal of Physics, 2020 This work justifies further paradigmatic importance of the model of viscoelastic subdiffusion in random environments for the observed subdiffusion in cellular biological systems.
Igor Goychuk, Thorsten Pöschel
doaj +1 more source
Canadian Journal of Statistics, EarlyView.Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne +2 more
wiley +1 more source
Convergence of weighted polynomial multiple ergodic averages
, 2008 We study here weighted polynomial multiple ergodic averages. A sequence of weights is called universally good if any polynomial multiple ergodic average with this sequence of weights converges in $L^{2}$.
Chu, Qing
core +3 more sources
Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley +1 more source
Unimodular lattice triangulations as small-world and scale-free random graphs
New Journal of Physics, 2015 Real-world networks, e.g., the social relations or world-wide-web graphs, exhibit both small-world and scale-free behaviour. We interpret lattice triangulations as planar graphs by identifying triangulation vertices with graph nodes and one-dimensional ...
B Krüger, E M Schmidt, K Mecke
doaj +1 more source
Weighted multiple ergodic averages and correlation sequences
, 2016 We study mean convergence results for weighted multiple ergodic averages defined by commuting transformations with iterates given by integer polynomials in several variables.
Frantzikinakis, Nikos, Host, Bernard
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This study employed an adaptive iterative strategy combining machine learning algorithms, domain knowledge, experimental design, and experimental feedback to aim to precisely and quickly discover high‐entropy ceramics with excellent energy storage performance.
Haowen Liu +4 more
wiley +1 more source