Results 121 to 130 of about 404,274 (272)

Higher homotopy groups of topological Kac-Moody groups, Whitehead tower, and string groups [PDF]

arXiv
This note establishes that homotopy groups of topological split real Kac-Moody groups are countable and, hence, concludes the existence of Whitehead towers consisting of topological groups for these groups and their maximal compact subgroups. Moreover, this note proposes a construction for string groups of the $E_n$-series.
arxiv  

Bioactive Glass Microscaffolds Fabricated by Two‐Photon Lithography

Advanced Materials, EarlyView.
Microstructuring of bioactive glasses offers great potential to influence cell behavior for bone tissue engineering. By utilizing two‐photon lithography of a nanocomposite and thermal post‐processing, single‐micron features and complex structures are achieved.
Leonhard Hambitzer, Jan Mathis Hornbostel, Louise Roolfs, Richard Prediger, Sebastian Kluck, Kai Zheng, Cornelia Lee‐Thedieck, Frederik Kotz‐Helmer   +7 more
wiley   +1 more source

On the invariant mean on topological semigroups and on topological groups [PDF]

, 1965
Edmond E. Granirer
openalex   +1 more source

Twisted GeS Nanowire with Engineered Stacking Order and Tunable Composition

Advanced Materials Interfaces, EarlyView.
1D twisted GeS nanowires with engineered stacking orders and tunable bandgaps are synthesized using an axial screw dislocation mechanism. These nanowires exhibit enhanced photoelectronic properties and strong second harmonic generation (SHG), presenting new opportunities for future electronic and optoelectronic applications.
Qi Wu, Xuan Pan, Weiwei Zhao, Yuan Gao, Dawei Zhao, Shancheng Yan, Taotao Li, Feng Miao, Zaiyao Fei, Yi Shi   +9 more
wiley   +1 more source

Uniform continuity and compactness in topological groups [PDF]

, 1962
J. M. Kister
openalex   +1 more source

Enhanced Oxygen Evolution Kinetics via Single‐Atom Catalyst Design: A Review

Advanced Materials Interfaces, EarlyView.
Single atom catalysts (SACs) in oxygen evolution reaction (OER). TOC shows key aspects like synthetic strategies, supports‐selection principle, metal types, and OER performances in SACs. Abstract This review highlights recent advancements in enhancing oxygen evolution reaction kinetics through the design of single‐atom catalysts.
Zhen Yuan, Yingjie Yu, Qiao Xie, Lixiang Ding, Wen Lei, Haijun Zhang, Yonggang Yao, Yuhua Wang   +7 more
wiley   +1 more source

A note on topological transformation groups with a fixed end point [PDF]

, 1966
William J. Gray
openalex   +1 more source

Wafer‐Scale Synthesis of Topological Insulator Sb2Te3 Thin Films

Advanced Materials Interfaces, EarlyView.
This work demonstrates how the topologically protected conduction in Sb2Te3 thin films can be extended from few‐mm2 samples’ area up to larger areas of several cm2 Si(111) wafers. The reported findings represent a breakthrough for the future technology scale‐up of topological insulators for applications such as spintronics, thermoelectrics, and quantum
Ali Shafiei, Ahmad Fathi Hafshejani, Rehab M. G. Ahmed, Alessio Lamperti, Emanuele Longo, Lorenzo Locatelli, Christian Martella, Alessandro Molle, Graziella Tallarida, Carlo Zucchetti, Claudia Wiemer, Massimo Longo, Roberto Mantovan   +12 more
wiley   +1 more source

Klein Topological Field Theories from Group Representations

Symmetry, Integrability and Geometry: Methods and Applications, 2011
We show that any complex (respectively real) representation of finite group naturally generates a open-closed (respectively Klein) topological field theory over complex numbers.
Sergey A. Loktev, Sergey M. Natanzon
doaj   +1 more source

On central topological groups [PDF]

, 1966
Siegfried Grosser, Martin Moskowitz
openalex   +1 more source