Results 81 to 90 of about 437,604 (285)

Limit sets of relatively hyperbolic groups [PDF]

Geometriae Dedicata, 2011
In this paper, we prove a limit set intersection theorem in relatively hyperbolic groups. Our approach is based on a study of dynamical quasiconvexity of relatively quasiconvex subgroups. Using dynamical quasiconvexity, many well-known results on limit sets of geometrically finite Kleinian groups are derived in general convergence groups.
Wenyuan Yang, Wenyuan Yang
openaire   +4 more sources

Bicontinuous Microarchitected Scaffolds Provide Topographic Cues That Govern Neuronal Behavior and Maturation

Advanced Functional Materials, EarlyView.
A scalable biomimetic platform transforms bioinert poly(ethylene glycol) diacrylate into neuroinstructive matrices via integrating solvent transfer‐induced phase separation, microfluidics, and 3D bioprinting. Bicontinuous, hyperbolically curved microporous networks embedded within a fibrous construct elicit rapid adhesion, robust proliferation, and ...
Prince D. Okoro, Kevin Dalsania, Shiril B. Iragavarapu, Benjamin Dela Cruz, Aihik Banerjee, Merve Basaranbilek, Martin F. Haase, Bahman Anvari, Iman Noshadi   +8 more
wiley   +1 more source

Residual finiteness, QCERF, and fillings of hyperbolic groups

, 2008
We prove that if every hyperbolic group is residually finite, then every quasi-convex subgroup of every hyperbolic group is separable. The main tool is relatively hyperbolic Dehn filling.Comment: (v1) 22 pages, 2 figures. (v2) 24 pages, 2 figures.
Bridson, Daniel Groves, Gromov, Ian Agol, Jason Fox Manning, Osin   +5 more
core   +1 more source

Self‐Assembled Membranes for High Ion Selectivity and Proton Blocking in Electrochemical Applications

Advanced Functional Materials, EarlyView.
Phase‐separated alkyl poly(vinylimidazolium) membranes exhibit exceptional ionic conductivity, counter‐ion selectivity, and proton‐blocking ability by forming stable micro/macrophase‐separated domains. This design overcomes the conductivity–selectivity trade‐off in conventional ion‐exchange membranes (IEMs), offering a new paradigm for high‐performance
Min Gyu Shin, José C. Díaz, Jovan Kamcev   +2 more
wiley   +1 more source

Bounded geometry in relatively hyperbolic groups

, 2004
We prove that, if a group is relatively hyperbolic, the parabolic subgroups are virtually nilpotent if and only if there exists a hyperbolic space with bounded geometry on which it acts geometrically finitely. This provides, by use of M. Bonk and O. Schramm embedding theorem, a very short proof of the finiteness of asymptotic dimension of relatively ...
François Dahmani
openalex   +5 more sources

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

Block Copolymer Microcapsules with Perpendicularly‐Perforated Ultrathin Membranes for Controlled Transmembrane Transport

Advanced Functional Materials, EarlyView.
Block copolymer microcapsules with ultrathin, perpendicularly perforated membranes are developed through double emulsions, initiated by the diffusion of water into single emulsions. Both shell thickness and channel diameter can be systematically tuned, offering precision in molecular sieving and significantly enhanced permeation rates.
Zhengping Tan, Wahyu Martumpal Hamonangan, Jinwoo Kim, Younghyeon Ahn, Jaeyoung Choi, Meng Xu, Sanghyuk Park, Jinseok Park, Shin‐Hyun Kim, Bumjoon J. Kim   +9 more
wiley   +1 more source

3D‐Printed Soft Magnetoactive Origami Actuators

Advanced Functional Materials, EarlyView.
Soft magnetoactive films are 3D‐printed using ink with up to 75 wt.% ferromagnetic particles and dual UV/heat curing, then integrated with various origami structures. The films are flexible, magnetically responsive, and programmable, enabling flexible integration with origami without hindering shape‐changeability.
Sen Zhang, Yuan Li, Zimeng Li, Nabil Chedid, Peiqi Zhang, Ke Cheng, Xiaomeng Fang   +6 more
wiley   +1 more source

Vorticity‐Facilitated Platelet Aggregation: a High Expansion‐Ratio Stenotic Microfluidic Platform Unravels the Role of Complex Flow Dynamics in Arterial Thrombosis

Advanced Healthcare Materials, EarlyView.
This study reveals how vorticity—a swirling flow pattern—enhances platelet aggregation and thrombus formation in high‐shear conditions. Using a custom microfluidic model, it is shows that vorticity promotes vWF–GPIbα interactions and calcium signaling, providing new insights into thrombosis mechanobiology and informing safer blood‐contacting medical ...
Jianfang Ren, Nurul Aisha Zainal Abidin, Allan Sun, Rui Gao, Yuxin Chen, Arian Nasser, Zihao Wang, Yunduo Charles Zhao, Alexander Dupuy, Anna Waterhouse, Qian Peter Su, Daniele Vigolo, Mike Chia Lun Wu, Lining Arnold Ju   +13 more
wiley   +1 more source

A WHITEHEAD ALGORITHM FOR TORAL RELATIVELY HYPERBOLIC GROUPS [PDF]

International Journal of Algebra and Computation, 2012
The Whitehead problem is solved in the class of toral relatively hyperbolic groups G (i.e. torsion-free relatively hyperbolic groups with abelian parabolic subgroups): there is an algorithm which, given two finite tuples (u1,…,un) and (v1,…,vn) of elements of G, decides whether there is an automorphism of G taking ui to vi for all i.
Kharlampovich, Olga, Ventura Capell, Enric   +1 more
openaire   +6 more sources