Results 21 to 30 of about 9,794 (135)
NUMERICAL ANALYSIS OF AN INVERSE PROBLEM ORIGINATED IN PHENOMENON OF POLLUTION AIR URBAN
Selecciones Matemáticas, 2016 This paper presents the calibration study of a two - dimensional mathematical model for the problem of urban air pollution. It is mainly assumed that air pollution is afected by wind convection, diffusion and chemical reactions of pollutants ...
Aníbal Coronel, Ian Hess
doaj +1 more source
The divergence of the BFGS and Gauss Newton Methods [PDF]
, 2013 We present examples of divergence for the BFGS and Gauss Newton methods. These examples have objective functions with bounded level sets and other properties concerning the examples published recently in this journal, like unit steps and convexity along ...
Mascarenhas, Walter F.
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The inverse Frobenius-Perron problem: A survey of solutions to the original problem formulation
AIMS Mathematics, 2021 The inverse Frobenius-Perron problem (IFPP) is a collective term for a family of problems that requires the construction of an ergodic dynamical system model with prescribed statistical characteristics.
A. McDonald, M. A. Wyk, Guanrong Chen
semanticscholar +1 more source
Geometry and topology of CC and CQ states [PDF]
, 2014 We show that multipartite mixed bipartite CC and CQ states are geometrically and topologically distinguished in the space of states. They are characterized by non-vanishing Euler-Poincar\'{e} characteristics on the topological side and by the existence ...
Oszmaniec, Michał +2 more
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A non-conservative Harris ergodic theorem [PDF]
, 2021 We consider non-conservative positive semigroups and obtain necessary and sufficient conditions for uniform exponential contraction in weighted total variation norm.
Bansaye, Vincent +3 more
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Instability statistics and mixing rates [PDF]
, 2009 We claim that looking at probability distributions of finite time largest Lyapunov exponents, and more precisely studying their large deviation properties, yields an extremely powerful technique to get quantitative estimates of polynomial decay rates of ...
Artuso R., Manchein C.
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Discrete Dynamical Systems: A Brief Survey [PDF]
, 2018 Dynamical system is a mathematical formalization for any fixed rule that is described in time dependent fashion. The time can be measured by either of the number systems - integers, real numbers, complex numbers.
Fernandes, S. +4 more
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Recurrence and pressure for group extensions
, 2013 We investigate the thermodynamic formalism for recurrent potentials on group extensions of countable Markov shifts. Our main result characterises recurrent potentials depending only on the base space, in terms of the existence of a conservative product ...
Aaronson +12 more
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Discrete Dynamics in Nature and Society, Volume 2019, Issue 1, 2019., 2019 A formal description of typical compartmental epidemic models obtained is presented by splitting the state into an infective substate, or infective compartment, and a noninfective substate, or noninfective compartment. A general formal study to obtain the reproduction number and discuss the positivity and stability properties of equilibrium points is ...
M. De la Sen +4 more
wiley +1 more source
Symptoms of complexity in a tourism system [PDF]
, 2007 Tourism destinations behave as dynamic evolving complex systems, encompassing numerous factors and activities which are interdependent and whose relationships might be highly nonlinear.
Baggio, Rodolfo
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