Results 71 to 80 of about 3,771,122 (391)
Uniqueness for the anisotropic fractional conductivity equation [PDF]
arXiv, 2022 In this paper we study an inverse problem for fractional anisotropic conductivity. Our nonlocal operator is based on the well-developed theory of nonlocal vector calculus, and differs substantially from other generalizations of the classical anisotropic conductivity operator obtained spectrally.
arxiv
On the Relativistic anisotropic configurations [PDF]
Eur. Phys. J. C (2016) 76: 347, 2016 In this paper we study anisotropic spherical polytropes within the framework of general relativity. Using the anisotropic Tolman-Oppenheimer-Volkov (TOV) equations, we explore the relativistic anisotropic Lane-Emden equations. We find how the anisotropic pressure affects the boundary conditions of these equations.
arxiv +1 more source
The pressure equation in anisotropic medium [PDF]
Stochastics and Stochastic Reports, 1996 In this paper we will prove existence and uniqueness theorems for the stochastic differential equations (both smooth and singular case) where D is a smooth domainf,g are stochastic functions and Exp is a positive white noise matrix. We will show that these equations have solutions in the space (S)-1 of generalized white noise distributions in a strong ...
openaire +2 more sources
Anisotropic singular double phase Dirichlet problems
Discrete and Continuous Dynamical Systems. Series A, 2021 We consider an anisotropic double phase problem with a reaction in which we have the competing effects of a parametric singular term and a superlinear perturbation.
N. Papageorgiou +2 more
semanticscholar +1 more source
Analysis of Anisotropic Nonlocal Diffusion Models: Well-posedness of Fractional Problems for Anomalous Transport [PDF]
arXiv, 2021 We analyze the well-posedness of an anisotropic, nonlocal diffusion equation. Establishing an equivalence between weighted and unweighted anisotropic nonlocal diffusion operators in the vein of unified nonlocal vector calculus, we apply our analysis to a class of fractional-order operators and present rigorous estimates for the solution of the ...
arxiv
Comment on "Covariant Tolman-Oppenheimer-Volkoff equations. II. The anisotropic case" [PDF]
Phys. Rev. D 98, 088503 (2018), 2018 Recently, the covariant formulation of the Tolman-Oppenheimer-Volkoff (TOV) equations for studying the equilibrium structure of a spherically symmetric compact star in the presence of the pressure anisotropy in the interior of a star was presented in Phys. Rev. D \textbf{97} (2018) 124057.
arxiv +1 more source
Equilibrium, radial stability and non-adiabatic gravitational collapse of anisotropic neutron stars
European Physical Journal C: Particles and Fields, 2020 In this work we construct families of anisotropic neutron stars for an equation of state compatible with the constraints of the gravitational-wave event GW170817 and for four anisotropy ansatze.
Juan M. Z. Pretel
doaj +1 more source
Double bracket dissipation in kinetic theory for particles with anisotropic interactions
, 2007 We derive equations of motion for the dynamics of anisotropic particles directly from the dissipative Vlasov kinetic equations, with the dissipation given by the double bracket approach (Double Bracket Vlasov, or DBV).
Bloch A. +12 more
core +1 more source
On an Anisotropic Logistic Equation
MathematicsWe consider a nonlinear Dirichlet problem driven by the (p(z),q)-Laplacian and with a logistic reaction of the equidiffusive type. Under a nonlinearity condition on a quotient map, we show existence and uniqueness of positive solutions and the result is global in parameter λ.
Leszek Gasiński +1 more
openaire +2 more sources
Stability Analysis of Axial Reflection Symmetric Spacetime
, 2015 In this paper, we explore instability regions of non-static axial reflection symmetric spacetime with anisotropic source in the interior. We impose linear perturbation on the Einstein field equations and dynamical equations to establish the collapse ...
Bhatti, M. Zaeem Ul Haq, Sharif, M.
core +1 more source