Results 41 to 50 of about 344,178 (328)

The causal order on the ambient boundary [PDF]

open access: yes, 2016
We analyse the causal structure of the ambient boundary, the conformal infinity of the ambient (Poincar\'e) metric. Using topological tools we show that the only causal relation compatible with the global topology of the boundary spacetime is the ...
Antoniadis, Ignatios   +2 more
core   +2 more sources

RESEARCH ON POST-PROCESSING METHOD OF CONTINUUM STRUCTURE TOPOLOGY OPTIMIZATION BASED ON VARIABLE DENSITY METHOD

open access: yesJixie 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
doaj  

Entanglement entropy of topological orders with boundaries [PDF]

open access: yesJournal of High Energy Physics, 2018
Abstract In this paper we explore how non trivial boundary conditions could influence the entanglement entropy in a topological order in 2+1 dimensions. Specifically we consider the special class of topological orders describable by the quantum double.
Chen, Chaoyi   +3 more
openaire   +3 more sources

Non-Hermitian Boundary Modes and Topology [PDF]

open access: yesPhysical Review Letters, 2020
We consider conditions for the existence of boundary modes in non-Hermitian systems with edges of arbitrary codimension. Through a universal formulation of formation criteria for boundary modes in terms of local Green's functions, we outline a generic perspective on the appearance of such modes and generate corresponding dispersion relations.
Borgnia, Dan S.   +2 more
openaire   +3 more sources

The boundary manifold of a complex line arrangement [PDF]

open access: yes, 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
core   +3 more sources

Boundary and Exterior of a Multiset Topology

open access: yesJournal of New Theory, 2015
arXiv admin note: substantial text overlap with arXiv:1403 ...
Das, Debaroti, Mahanta, Juthika
openaire   +4 more sources

Monoids, their boundaries, fractals and C*-algebras

open access: yesTopological 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
doaj   +1 more source

Boundary shape identification method for density based topology optimization

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Topology optimization is an advanced design method that is used to generate lightweight and high-performance structures by determining the material distribution.
Yoshinori NISHIO, Yang LIU, Nagato ONO
doaj   +1 more source

Degeneration of Heegaard genus, a survey [PDF]

open access: yes, 2007
We survey known (and unknown) results about the behavior of Heegaard genus of 3-manifolds constructed via various gluings. The constructions we consider are (1) gluing together two 3-manifolds with incompressible boundary, (2) gluing together the ...
Bachman, David, Derby-Talbot, Ryan
core   +5 more sources

Infernal and exceptional edge modes: non-Hermitian topology beyond the skin effect

open access: yesJPhys Materials, 2023
The classification of point gap topology in all local non-Hermitian (NH) symmetry classes has been recently established. However, many entries in the resulting periodic table have only been discussed in a formal setting and still lack a physical ...
M Michael Denner   +2 more
doaj   +1 more source

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