Results 31 to 40 of about 347,783 (331)
Jixie qiangdu, 2022 The variable density method has become an effective method to solve the topology optimization problem of continuum structure due to its advantages such as few design variables and high efficiency.
ZHANG GuoFeng +3 more
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Topological boundary modes in jammed matter [PDF]
Soft Matter, 2016 Granular matter at the jamming transition is poised on the brink of mechanical stability, and hence it is possible that these random systems have topologically protected surface phonons. Studying two model systems for jammed matter, we find states that exhibit distinct mechanical topological classes, protected surface modes, and ubiquitous Weyl points.
Sussman, Daniel M. +2 more
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Towards Bulk Metric Reconstruction from Extremal Area Variations [PDF]
, 2019 The Ryu-Takayanagi and Hubeny-Rangamani-Takayanagi formulae suggest that bulk geometry emerges from the entanglement structure of the boundary theory. Using these formulae, we build on a result of Alexakis, Balehowsky, and Nachman to show that in four ...
Bao, Ning +3 more
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Equivalent topologies on the contracting boundary
Glasnik Matematicki, 2023 The contracting boundary of a proper geodesic metric space generalizes the Gromov boundary of a hyperbolic space. It consists of contracting geodesics up to bounded Hausdorff distances. Another generalization of the Gromov boundary is the \(\kappa\)–Morse boundary with a sublinear function \(\kappa\).
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Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons [PDF]
, 1997 We examine counterparts of the Reissner-Nordstrom-anti-de Sitter black hole spacetimes in which the two-sphere has been replaced by a surface Sigma of constant negative or zero curvature.
A. Ashtekar +58 more
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Topological boundary modes in isostatic lattices [PDF]
Nature Physics, 2013 Frames, or lattices consisting of mass points connected by rigid bonds or central force springs, are important model constructs that have applications in such diverse fields as structural engineering, architecture, and materials science. The difference between the number of bonds and the number of degrees of freedom of these lattices determines the ...
Kane, C. L., Lubensky, T. C.
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The boundary manifold of a complex line arrangement [PDF]
, 2008 We study the topology of the boundary manifold of a line arrangement in CP^2, with emphasis on the fundamental group G and associated invariants. We determine the Alexander polynomial Delta(G), and more generally, the twisted Alexander polynomial ...
Cohen, Daniel C, Suciu, Alexander I
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Remote Sensing, 2017 Topology adaptive water boundary extraction from satellite images using parametric snakes remains challenging in the domain of image segmentation. This paper proposed a modified balloon snake (MB-Snake) method based on the balloon snake (B-Snake) method,
Wenying Du, Nengcheng Chen, Dandan Liu
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Topology of the ambient boundary and the convergence of causal curves [PDF]
, 2015 We discuss the topological nature of the boundary spacetime, the conformal infinity of the ambient cosmological metric. Due to the existence of a homothetic group, the bounding spacetime must be equipped not with the usual Euclidean metric topology but ...
Antoniadis, Ignatios, Cotsakis, Spiros
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Monoids, their boundaries, fractals and C*-algebras
Topological Algebra and its Applications, 2020 In this note we establish some connections between the theory of self-similar fractals in the sense of John E. Hutchinson (cf. [3]), and the theory of boundary quotients of C*-algebras associated to monoids.
dal Verme Giulia, Weigel Thomas
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