Results 11 to 20 of about 362,217 (292)

Topological horseshoes for surface homeomorphisms

open access: yesDuke Mathematical Journal, 2022
This version includes some improvements to the presentation and an extended proof of Theorem M and N.
Le Calvez, Patrice, Tal, Fabio
openaire   +3 more sources

Competition Between Object Topology and Surface Features in Children’s Extension of Novel Nouns

open access: yesOpen Mind, 2023
Objects’ topological properties play a central role in object perception, superseding objects’ surface features in object representation and tracking from early in development.
Praveen Kenderla   +2 more
doaj   +1 more source

Diffusion at the surface of topological insulators [PDF]

open access: yesNew Journal of Physics, 2012
We consider the transport properties of topological insulators surface states in the presence of uncorrelated point-like disorder, both in the classical and quantum regimes. The transport properties of those two-dimensional surface states depend strongly on the amplitude of the hexagonal warping of their Fermi surface.
Adroguer   +4 more
openaire   +4 more sources

The topology of surface mediatrices

open access: yesTopology and its Applications, 2007
AbstractGiven a pair of distinct points p and q in a metric space with distance d, the mediatrix is the set of points x such that d(x,p)=d(x,q). In this paper, we examine the topological structure of mediatrices in connected, compact, closed 2-manifolds whose distance function is inherited from a Riemannian metric.
Bernhard, James, Veerman, J. J. P.
openaire   +3 more sources

The Vip3Ag4 Insecticidal Protoxin from Bacillus thuringiensis Adopts A Tetrameric Configuration That Is Maintained on Proteolysis

open access: yesToxins, 2017
The Vip3 proteins produced during vegetative growth by strains of the bacterium Bacillus thuringiensis show insecticidal activity against lepidopteran insects with a mechanism of action that may involve pore formation and apoptosis.
Leopoldo Palma   +8 more
doaj   +1 more source

Topological laminations on surfaces [PDF]

open access: yesExpositiones Mathematicae, 2019
We present and prove a topological characterization of geodesic laminations on hyperbolic surfaces of finite type.
openaire   +3 more sources

Anomalies of a topologically ordered surface [PDF]

open access: yesScientific Reports, 2015
AbstractBulk insulators with strong spin orbit coupling exhibit metallic surface states possessing topological order protected by the time reversal symmetry. However, experiments show vulnerability of topological states to aging and impurities. Different studies show contrasting behavior of the Dirac states along with plethora of anomalies, which has ...
Kalobaran Maiti   +4 more
openaire   +3 more sources

Topological charges and the genus of surfaces [PDF]

open access: yesJournal of Geometry and Physics, 1997
We show that the topological charge of the n-soliton solution of the sine-Gordon equation n is related to the genus g > 1 of a constant negative curvature compact surface described by this configuration. The relation is n=2(g-1), where n is even. The moduli space of complex dimension B(g)=3(g-1) corresponds precisely to the freedom to choosing the ...
Antonio J. Segui-Santonja, Luis J. Boya
openaire   +3 more sources

Enhancing Surface Topology of Udimet®720 Superalloy through Ultrasonic Vibration-Assisted Ball Burnishing

open access: yesMetals, 2020
This contribution reports the effects of an ultrasonic-vibration assisted ball burnishing process on the topological descriptors of nickel-based alloy Udimet®720. This material is of high interest for the transportation industry, and specifically for the
Ramón Jerez-Mesa   +3 more
doaj   +1 more source

On the topology and index of minimal surfaces [PDF]

open access: yesJournal of Differential Geometry, 2016
We show that for an immersed two-sided minimal surface in $R^3$, there is a lower bound on the index depending on the genus and number of ends. Using this, we show the nonexistence of an embedded minimal surface in $R^3$ of index $2$, as conjectured by Choe.
Davi Maximo, Davi Maximo, Otis Chodosh
openaire   +4 more sources

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