Results 11 to 20 of about 4,105,755 (293)

Root Operators and “Evolution” Equations [PDF]

open access: yesMathematics, 2015
Root-operator factorization à la Dirac provides an effective tool to deal with equations, which are not of evolution type, or are ruled by fractional differential operators, thus eventually yielding evolution-like equations although for a multicomponent ...
Giuseppe Dattoli, Amalia Torre
doaj   +4 more sources

Balitsky-JIMWLK evolution equation at NLO

open access: yesEPJ Web of Conferences, 2014
Wilson line operators are infinite gauge factors ordered along the straight lines of the fast moving particles. Scattering amplitudes of proton-Nucleus or Nucleus-Nucleus collisions at high-energy are written in terms of matrix elements of these ...
Chirilli Giovanni Antonio
doaj   +2 more sources

Pandemic Equation and COVID-19 Evolution

open access: yesEncyclopedia
The Pandemic Equation describes multiple pandemic waves and has been applied to describe the COVID-19 pandemic. Using the generalized approaches of solid-state physics, we derive the Pandemic Equation, which accounts for the effects of pandemic ...
Michael Shur
doaj   +2 more sources

Evolution of the Wilson–Cowan equations [PDF]

open access: yesBiological Cybernetics, 2021
The Wilson-Cowan equations were developed to provide a simplified yet powerful description of neural network dynamics. As such, they embraced nonlinear dynamics, but in an interpretable form. Most importantly, it was the first mathematical formulation to emphasize the significance of interactions between excitatory and inhibitory neural populations ...
Hugh R. Wilson, Jack D. Cowan
openaire   +4 more sources

Classifying evolution equations [PDF]

open access: yesNonlinear Analysis, 2001
A Lie point symmetry classification of evolution equations in 1+1 time-space dimensions was presented.
Basarab-Horwath, P.   +2 more
openaire   +1 more source

Electroweak evolution equations [PDF]

open access: yesJournal of High Energy Physics, 2005
15 pages, 3 ...
Ciafaloni, Paolo, Comelli, Denis
openaire   +2 more sources

Mode Decomposition Evolution Equations [PDF]

open access: yesJournal of Scientific Computing, 2011
Partial differential equation (PDE) based methods have become some of the most powerful tools for exploring the fundamental problems in signal processing, image processing, computer vision, machine vision and artificial intelligence in the past two decades. The advantages of PDE based approaches are that they can be made fully automatic, robust for the
Yang Wang 0020   +2 more
openaire   +4 more sources

Controllability of Evolution Equations with Memory [PDF]

open access: yesSIAM Journal on Control and Optimization, 2017
This article is devoted to studying the null controllability of evolution equations with memory terms. The problem is challenging not only because the state equation contains memory terms but also because the classical controllability requirement at the final time has to be reinforced, involving the contribution of the memory term, to ensure that the ...
Felipe Wallison Chaves Silva   +2 more
openaire   +5 more sources

An application of semigroup theory to a fragmentation equation [PDF]

open access: yes, 2004
The process of fragmentation arises in many physical situations, including polymer degradation, droplet breakage and rock crushing and grinding. Under suitable assumptions, the evolution of the size distribution c(x, t), where x represents particle size ...
Lamb, W., Stewart, Iain W., Blair, P.N.
core   +2 more sources

Numerical simulation of rivulet evolution on a horizontal cable subject to an external aerodynamic field [PDF]

open access: yes, 2010
On wet and windy days, the inclined cables of cable-stayed bridges may experience a large amplitude oscillation known as rain-wind-induced vibration (RWIV).
Duffy, B.R.   +9 more
core   +3 more sources

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