Results 21 to 30 of about 692,618 (182)
New Non-Diagonal Singularity-Free Cosmological Perfect-Fluid Solution [PDF]
, 1995 We present a new non-diagonal G2 inhomogeneous perfect-fluid solution with barotropic equation of state p=rho and positive density everywhere. It satisfies the global hyperbolicity condition and has no curvature singularity anywhere.
A. Barnes +11 more
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Convergence spaces and diagonal conditions
Topology and its Applications, 1996 The authors study and compare several diagonal axioms which can be imposed on convergence spaces. These conditions were first introduced by \textit{H.-J. Kowalsky} [Math. Nachr. 12, 301-340 (1954; Zbl 0056.41403)] and by \textit{C. H. Cook} and \textit{H. R. Fischer} [Math. Ann. 174, 1-7 (1967; Zbl 0152.39603)].
Kent, D. C., Richardson, G. D.
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Regularity of fuzzy convergence spaces
Open Mathematics, 2018 (Fuzzy) convergence spaces are extensions of (fuzzy) topological spaces. ⊤-convergence spaces are one of important fuzzy convergence spaces. In this paper, we present an extending dual Fischer diagonal condition, and making use of this we discuss a ...
Li Lingqiang, Jin Qiu, Yao Bingxue
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Karpatsʹkì Matematičnì Publìkacìï, 2014 The aim of this article is to describe exponent matrices of Gorenstein tiled orders. The necessary and sufficient condition for possibility such to construct a Gorenstein tiled order which has given orders over some discrete valuation ring (the unique ...
V. Kiricenko +4 more
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Journal of Applied Mathematics, 2013 We present a new diagonal quasi-Newton update with an improved diagonal Jacobian approximation for solving large-scale systems of nonlinear equations. In this approach, the Jacobian approximation is derived based on the quasi-Cauchy condition.
Mohammed Yusuf Waziri +1 more
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Common diagonal solutions to the Lyapunov inequalities for interval systems
Journal of Inequalities and Applications, 2016 In this paper for interval systems we consider the problem of existence and evaluation of common diagonal solutions to the Lyapunov inequalities. For second order systems, we give necessary and sufficient conditions and exact solutions, that is, complete
Bengi Yıldız +2 more
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A Random Multiple Access Protocol with Spatial Interactions [PDF]
, 2007 We analyse an ALOHA-type random multiple-access protocol where users have local interactions. We show that the fluid model of the system workload satisfies a certain differential equation.
Abramson +8 more
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On diagonal representatives in boundary condition matrices on orbifolds [PDF]
International Journal of Modern Physics A, 2020 We study diagonal representatives of boundary condition matrices on the orbifolds [Formula: see text] and [Formula: see text] [Formula: see text]. We give an alternative proof of the existence of diagonal representatives in each equivalent class of boundary condition matrices on [Formula: see text], using a matrix exponential representation, and show ...
Yoshiharu Kawamura, Yasunari Nishikawa
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Initial conditions and evolution of off-diagonal distributions [PDF]
Nuclear Physics B - Proceedings Supplements, 1999 3 pages, LATeX, 1 figure, uses npb.sty, presented at the DIS99 Workshop, Zeuthen, Germany, April 19-23, 1999, to appear in the ...
Golec-Biernat, K. +2 more
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Exact solution of the sp(4) integrable spin chain with generic boundaries
Journal of High Energy Physics, 2019 The off-diagonal Bethe ansatz method is generalized to the integrable model associated with the sp(4) (or C 2) Lie algebra. By using the fusion technique, we obtain the complete operator product identities among the fused transfer matrices.
Guang-Liang Li +7 more
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