Results 31 to 40 of about 55,051 (186)

The Number of Eigenvalues of a Tensor

, 2010
Eigenvectors of tensors, as studied recently in numerical multilinear algebra, correspond to fixed points of self-maps of a projective space. We determine the number of eigenvectors and eigenvalues of a generic tensor, and we show that the number of ...
Bedford, Bernd Sturmfels, Cox, Cox, Dustin Cartwright, Fulton, Fulton, Gel’fand, Hartshorne, Ni, Qi, Qi   +11 more
core   +1 more source

A compatibility criterion for optimal control and information aggregation in hierarchical network systems

Asian Journal of Control, EarlyView.
Abstract Large swarms often adopt a hierarchical network structure that incorporates information aggregation. Although this approach offers significant advantages in terms of communication efficiency and computational complexity, it can also lead to degradation due to information constraints.
Kento Fujita, Daisuke Tsubakino
wiley   +1 more source

Structure of Stochastic Dynamics near Fixed Points

, 2005
We analyze the structure of stochastic dynamics near either a stable or unstable fixed point, where force can be approximated by linearization. We find that a cost function that determines a Boltzmann-like stationary distribution can always be defined ...
Beri, C. Kwon, Cross, D. J. Thouless, Maier, P. Ao, Qian   +6 more
core   +2 more sources

Environmental Performance Drivers: A Political Cost Approach

Business Strategy and the Environment, EarlyView.
ABSTRACT We contribute to the business strategy and the environment literature by examining the effect of political cost pressures on corporate environmental performance in the context of United Kingdom‐listed firms. Drawing on a sample of non‐financial firms from the FTSE All‐Share Index over a period of 10 years (2013–2022), we construct novel ...
Kazi Abul Bashar Muhammad Afzal Hossain, Mahmoud Elmarzouky, George Giannopoulos   +2 more
wiley   +1 more source

Divergences of the irreducible vertex functions in correlated metallic systems: Insights from the Anderson Impurity Model

, 2018
In this work, we analyze in detail the occurrence of divergences in the irreducible vertex functions for one of the fundamental models of many-body physics: the Anderson impurity model (AIM). These divergences -- a surprising hallmark of the breakdown of
Chalupa, P., Gunacker, P., Held, K., Schäfer, T., Toschi, A.   +4 more
core   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

Advection‐Pressure Splitting Schemes Applied to a Non‐Conservative 1D Blood Flow Model With Transport for Arteries and Veins

International Journal for Numerical Methods in Fluids, EarlyView.
We introduce new efficient and accurate first order finite volume‐type numerical schemes, for the non‐conservative one‐dimensional blood flow equations with transport, taking into account different velocity profiles. The framework is the flux‐vector splitting approach of Toro and Vázquez‐Cendón (2012), that splits the system in two subsystems of PDEs ...
Alessandra Spilimbergo, Eleuterio F. Toro, Annunziato Siviglia, Lucas O. Müller   +3 more
wiley   +1 more source

Real eigenvector distributions of random tensors with backgrounds and random deviations Singular values and eigenvalues of tensors: a variational approach Statistical and computational phase transitions in spiked tensor estimation

Progress of Theoretical and Experimental Physics, 2023
Abstract As in random matrix theories, eigenvector/value distributions are important quantities of random tensors in their applications. Recently, real eigenvector/value distributions of Gaussian random tensors have been explicitly computed by expressing them as partition functions of quantum field theories with quartic interactions.
openaire  

Sharp error bounds for Ritz vectors and approximate singular vectors

, 2019
We derive sharp bounds for the accuracy of approximate eigenvectors (Ritz vectors) obtained by the Rayleigh-Ritz process for symmetric eigenvalue problems.
Nakatsukasa, Yuji
core   +1 more source

Forecasting House Prices: The Role of Market Interconnectedness

Journal of Forecasting, EarlyView.
ABSTRACT While the existing research uncovers interconnections between various housing markets, it largely ignores the question of whether such linkages can improve house price predictions. To address this issue, we proceed in two steps. First, we forecast disaggregated house price growth rates from Australia and China to determine whether ...
Zac Chen, George Milunovich, Shuping Shi, Ben Wang   +3 more
wiley   +1 more source