Results 31 to 40 of about 244 (53)
Asymptotic entropy and green speed for random walks on countable groups [PDF]
, 2007 We study asymptotic properties of the Green metric associated with transient random walks on countable groups. We prove that the rate of escape of the random walk computed in the Green metric equals its asymptotic entropy.
Blachère, Sébastien +2 more
core +7 more sources
, 2016 The main purpose of this paper is to study the problem of the existence, uniqueness and positivity of solutions of a system of higher order fractional differential equations with boundary value problem expressed by fractional and integral conditions ...
R. Jebari
semanticscholar +1 more source
Nontrivial solutions for a fractional boundary value problem
Advances in Differential Equations, 2013 In this work, we discuss the existence of nontrivial solutions for the fractional boundary value problem {D0+αu=−f(t,u),t∈[0,1],u(0)=u′(0)=u′(1)=0. Here α∈(2,3] is a real number, D0+α is the standard Riemann-Liouville fractional derivative of order α ...
Keyu Zhang, Jiafa Xu
semanticscholar +2 more sources
Sharp constant for L^p-L^∞ type Sobolev's inequality
, 2015 Sharp constants for Lp−L∞ type Sobolev’s inequalities ‖y‖∞ C‖ y‖p and ‖y‖∞ C‖∇( y)‖p are studied. The problems are solved by using Green’s function and rearrangement theory. Mathematics subject classification (2010): 26D10, 34B27, 46E35.
H. Lou
semanticscholar +1 more source
Advances in Differential Equations, 2014 In this paper, we consider the following nonlinear boundary value problem: (φ(u′(t)))′+a(t)f(u(t))=0 ...
Fenghua Miao +2 more
semanticscholar +1 more source
Supersymmetry and Schr\"odinger-type operators with distributional matrix-valued potentials [PDF]
, 2014 Building on work on Miura's transformation by Kappeler, Perry, Shubin, and Topalov, we develop a detailed spectral theoretic treatment of Schr\"odinger operators with matrix-valued potentials, with special emphasis on distributional potential ...
Eckhardt, Jonathan +3 more
core +2 more sources
, 2016 This paper presents sufficient conditions for the solvability of the third order three point boundary value problem \begin{equation*} \left\{ \begin{array}{c} -u^{\prime \prime \prime }(t)=f(t,\,v(t),\,v^{\prime }(t)) \\ -v^{\prime \prime \prime }(t)=h(t,
de Sousa, Robert, Minhós, Feliz
core +1 more source
Existence of solution for functional coupled systems with full nonlinear terms and applications to coupled a mass-spring model [PDF]
, 2017 In this paper we consider some boundary value problems composed by coupled systems of second order differential equations with full nonlinearities and general functional boundary conditions verifying some monotone assumptions.
de Sousa, Robert, Minhós, Feliz
core +1 more source
Comment on `Wedges, cones, cosmic strings and their vacuum energy'
, 2013 A recent paper (2012 \emph{J. Phys.\ A} \textbf{45} 374018) is extended by investigating the behavior of the regularized quantum scalar stress tensor near the axes of cones and their covering manifold, the Dowker space.
Fulling, S. A., Mera, F. D.
core +1 more source
A unified gas kinetic scheme for transport and collision effects in plasma
, 2018 In this study, the Vlasov-Poisson equation with or without collision term for plasma is solved by the unified gas kinetic scheme (UGKS). The Vlasov equation is a differential equation describing time evolution of the distribution function of plasma ...
Pana, Dongxin +3 more
core +2 more sources