Results 31 to 40 of about 920,770 (191)

Functional Bethe ansatz methods for the open XXX chain

, 2010
We study the spectrum of the integrable open XXX Heisenberg spin chain subject to non-diagonal boundary magnetic fields. The spectral problem for this model can be formulated in terms of functional equations obtained by separation of variables or ...
Frahm, Holger, Grelik, Jan H., Seel, Alexander, Wirth, Tobias   +3 more
core   +1 more source

Solution of the Synthesis Problem of Boundary Optimal Control of a Rod Cooling Process with a Heat Conductive Viscosity [PDF]

, 2017
The problem of synthesis of the boundary optimal control of the cooling process of media with heat conductive viscosity is investigated. In addition to the distributed parameters, the concentrated parameters act on the system.
Mammadov, R. S. (Rashad), Qasimov, S. Y. (Sardar)   +1 more
core   +2 more sources

Systems of functional-differential equations periodic solutions for systems of functional-differential semilinear equations at resonance

, 2020
Motivated by Lazer-Leach type results, we study the existence of periodic solutions for systems of functional-differential equations at resonance with an arbitrary even-dimensional kernel and linear deviating terms involving a general delay of the form $\int_0^{2π}u(t+s)\,dλ(s)$, where $λ$ is a finite regular signed measure. Our main technique shall be
Amster, Pablo, Epstein, Julián, Sanjuán, Arturo   +2 more
openaire   +2 more sources

The description of entire solutions for some class of complex nonlinear partial differential equation (systems) in C2 ${\mathbb{C}}^{2}$

Demonstratio Mathematica
This article focuses on describing the entire solutions of complex nonlinear partial differential equation (systems) with two variables. Utilizing Nevanlinna theory along with the Hadamard factorization theory of meromorphic functions, we derive several ...
Chen Yu Bin, Jiao Xin, Xu Hong Yan
doaj   +1 more source

Dynamical density functional theory for molecular and colloidal fluids: a microscopic approach to fluid mechanics [PDF]

, 2008
In recent years, a number of dynamical density functional theories (DDFTs) have been developed for describing the dynamics of the one-body density of both colloidal and atomic fluids.
Archer, A. J.
core   +2 more sources

Study on solutions of the systems of complex product-type PDEs with more general forms in ℂ2

Open Mathematics
With the help of the Nevanlinna theory and the Hadamard factorization theory of meromorphic functions, we mainly give a description of the existence and the forms of the transcendental entire solutions of several product-type complex partial differential
Li Hong, Luo Zhao Sheng, Xu Hong Yan
doaj   +1 more source

Heun Method Using to Solve System of NonLinear Functional Differential Equations

مجلة بغداد للعلوم, 2007
In this paper Heun method has been used to find numerical solution for first order nonlinear functional differential equation. Moreover, this method has been modified in order to treat system of nonlinear functional differential equations .two numerical ...
Baghdad Science Journal
doaj   +1 more source

A dynamic variation principle for elastic-fluid contacts applied to elastohydrodynamic lubrication theory [PDF]

, 1990
This paper discusses the variational structure of the line contact problem between an elastic medium and a fluid. The equations for the deformation in the elastic material, and for the flow of the viscous fluid are assumed to be determined from an ...
Groesen, E. van, Verstappen, R.
core   +5 more sources

A study of solutions for several classes of systems of complex nonlinear partial differential difference equations in ℂ2

Demonstratio Mathematica
This article is devoted to describing the entire solutions of several systems of the first-order nonlinear partial differential difference equations (PDDEs).
Jiao Xin, Chen Yu Bin, Xu Hong Yan
doaj   +1 more source

Form factors at strong coupling via a Y-system

, 2010
We compute form factors in planar N=4 Super Yang-Mills at strong coupling. Namely we consider the overlap between an operator insertion and 2n gluons. Through the gauge/string duality these are given by minimal surfaces in AdS space.
A Brandhuber, AB Zamolodchikov, AB Zamolodchikov, AB Zamolodchikov, Alexander Zhiboedov, AN Kirillov, AR Steif, BM McCoy, C Anastasiou, C-N Yang, D Gaiotto, DM Hofman, GP Korchemsky, HJ Vega De, J Polchinski, JM Drummond, Juan Maldacena, K Pohlmeyer, LF Alday, LF Alday, LF Alday, LF Alday, M Bañados, N Dorey, NJ Hitchin, P Fendley, SL Lukyanov, SS Gubser, V Duca Del, VA Kazakov, WL Neerven van, Z Bern   +31 more
core   +1 more source