Results 91 to 100 of about 1,618,388 (368)
A flat plane that is not the limit of periodic flat planes
, 2003 We construct a compact nonpositively curved squared 2-complex whose universal cover contains a flat plane that is not the limit of periodic flat planes.Comment: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol3/
Bridson +6 more
core +2 more sources
Geometric quantization of topological gauge theories [PDF]
Zeitschrift f�r Physik C Particles and Fields, 1995 13 pages, plain TEX, IF/UFRJ ...
J. Barcelos-Neto, S. M. de Souza
openaire +4 more sources
Bioinspired Materials, Designs, and Manufacturing Strategies for Advanced Impact‐Resistant Helmets
Advanced Engineering Materials, EarlyView.This review explores how bioinspired materials, structures, and manufacturing strategies transform helmet design to achieve enhanced impact resistance. Drawing inspiration from nacre, porcupine quills, beetle exoskeletons, and skull architectures, it highlights advances in auxetic lattices, nanocomposites, and functionally graded foams.
Joseph Schlager +4 more
wiley +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Degree one maps between small 3-manifolds and Heegaard genus
, 2005 We prove a rigidity theorem for degree one maps between small 3-manifolds using Heegaard genus, and provide some applications and connections to Heegaard genus and Dehn surgery problems.Comment: Published by Algebraic and Geometric Topology at http ...
Boileau +8 more
core +1 more source
Topological Geometric Entanglement
, 2011 7 pages, 3 figures, 1 appendix. Revised version, including an analytical analysis of robustness, and a correction to the bipartition in Fig.2 ...
Orus, Roman, Wei, Tzu-Chieh
openaire +2 more sources
geometrical versus topological properties of manifolds [PDF]
Journal of the Institute of Mathematics of Jussieu, 2005 given a compact $n$-dimensional immersed riemannian manifold $m^n$ in some euclidean space we prove that if the hausdorff dimension of the singular set of the gauss map is small, then $m^n$ is homeomorphic to the sphere $s^n$. also, we define a concept of finite geometrical type and prove that finite geometrical type hypersurfaces with a small set ...
Carlos Matheus, Krerley Oliveira
openaire +3 more sources
Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi +6 more
wiley +1 more source
Abstract Topological Data Structure for 3D Spatial Objects
ISPRS International Journal of Geo-Information, 2019 In spatial science, the relationship between spatial objects is considered to be a vital element. Currently, 3D objects are often used for visual aids, improving human insight, spatial observations, and spatial planning.
Uznir Ujang +2 more
doaj +1 more source
Scientific Reports, 2022 In recent years, Hybrid Cellular Automata Method (HCAM) has been successfully applied to solve structural topology optimization problems. However, there was no report on HCAM research of three-dimensional composite structure composed of multiple ...
Xiaolei Deng +7 more
doaj +1 more source