Results 21 to 30 of about 223,659 (276)
Stability of the time-dependent identification problem for delay hyperbolic equations [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2022 Time-dependent and space-dependent source identification problems for partial differential and difference equations take an important place in applied sciences and engineering, and have been studied by several authors.
A. Ashyralyev, B. Haso
doaj +3 more sources
Constructing hyperbolic systems in the Ashtekar formulation of general relativity [PDF]
, 2000 Hyperbolic formulations of the equations of motion are essential technique for proving the well-posedness of the Cauchy problem of a system, and are also helpful for implementing stable long time evolution in numerical applications.
Alcubierre M. +8 more
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Correct conditions on the boundary separating subdomains [PDF]
Компьютерные исследования и моделирование, 2014 This paper presents definition and solution problem of correct conditions on the boundary, separating subdomains for hyperbolic linear equation systems.
Yuri I. Skalko
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Geodesic systems of tunnels in hyperbolic 3-manifolds [PDF]
, 2013 It is unknown whether an unknotting tunnel is always isotopic to a geodesic in a finite volume hyperbolic 3-manifold. In this paper, we address the generalization of this problem to hyperbolic 3-manifolds admitting tunnel systems.
Jessica, S. Purcell, Stephan D. Burton
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Singular hyperbolic systems [PDF]
Proceedings of the American Mathematical Society, 1999 We construct a class of vector fields on 3-manifolds containing the hyperbolic ones and the geometric Lorenz attractor. Conversely, we shall prove that nonhyperbolic systems in this class resemble the Lorenz attractor: they have Lorenz-like singularities accumulated by periodic orbits and they cannot be approximated by flows with nonhyperbolic critical
Morales, C. A. +2 more
openaire +1 more source
Symmetric hyperbolic systems for a large class of fields in arbitrary dimension [PDF]
, 2006 Symmetric hyperbolic systems of equations are explicitly constructed for a general class of tensor fields by considering their structure as r-fold forms. The hyperbolizations depend on 2r-1 arbitrary timelike vectors.
A. Anderson +32 more
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Dimension and product structure of hyperbolic measures [PDF]
, 1999 We prove that every hyperbolic measure invariant under a C^{1+\alpha} diffeomorphism of a smooth Riemannian manifold possesses asymptotically ``almost'' local product structure, i.e., its density can be approximated by the product of the densities on ...
Barreira, Luis +2 more
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Lower semicontinuity of attractors for non-autonomous dynamical systems [PDF]
, 2009 This paper is concerned with the lower semicontinuity of attractors for semilinear non-autonomous differential equations in Banach spaces. We require the unperturbed attractor to be given as the union of unstable manifolds of time-dependent hyperbolic
Abreu +9 more
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Distributed Control for Non-Cooperative Systems Governed by Time-Fractional Hyperbolic Operators
Fractal and FractionalThis paper studies distributed optimal control for non-cooperative systems involving time-fractional hyperbolic operators. Through the application of the Lax–Milgram theorem, we confirm the existence and uniqueness of weak solutions.
Hassan M. Serag +3 more
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Maximal rank root subsystems of hyperbolic root systems
, 2003 A Kac-Moody algebra is called hyperbolic if it corresponds to a generalized Cartan matrix of hyperbolic type. We study root subsystems of root systems of hyperbolic algebras.
Tumarkin, P.
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