Results 11 to 20 of about 2,380,854 (358)

Local homology properties of boundaries of groups. [PDF]

open access: bronzeMichigan Mathematical Journal, 1996
Let \(\widetilde X\) be a Euclidean retract, ER (embeddable in some Euclidean space as a retract). A closed subset \(Z\) of \(\widetilde X\) is a \(Z\)-set if there is deformation \(h_t\): \(\widetilde X\to \widetilde X\) with \(h_0= \text{id}\) and \(h_t(\widetilde X) \cap Z= \emptyset\) for \(t>0\) (two equivalent definitions are given).
Mladen Bestvina
semanticscholar   +4 more sources

Finiteness Properties of Some Groups of Local Similarities [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2012
Hughes has defined a class of groups that we call finite similarity structure (FSS) groups. Each FSS group acts on a compact ultrametric space by local similarities. The best-known example is Thompson’s group V.
Daniel S. Farley, Bruce Hughes
semanticscholar   +4 more sources

Local topological properties of asymptotic cones of groups [PDF]

open access: bronzeAlgebraic & Geometric Topology, 2014
We define a local analogue to Gromov's loop division property which is use to give a sufficient condition for an asymptotic cone of a complete geodesic metric space to have uncountable fundamental group. As well, this property is used to understand the local topological structure of asymptotic cones of many groups currently in the literature.
Gregory R. Conner, Curtis Kent
openalex   +4 more sources

On Local Embedding Properties of Injectors of Finite Soluble Groups [PDF]

open access: bronzeJournal of the Australian Mathematical Society, 2004
AbstractIn the present paper we consider Fitting classes of finite soluble groups which locally satisfy additional conditions related to the behaviour of their injectors. More precisely, we study Fitting classes 1 ≠⊆such that an-injector of G is, respectively, a normal, (sub)modular, normally embedded, system permutable subgroup of G for all G ...
Stephanie Reifferscheid
openalex   +3 more sources

Properties of massive stars in the local group [PDF]

open access: gold, 2017
Στην παρούσα διδακτορική διατριβή, παρουσιάζεται μια εκτενής μελέτη δυο διαφορετικών εξελικτικών σταδίων αστέρων μεγάλης μάζας: εξελιγμένοι, μέσης μάζας αστέρες που έχουν επιβιώσει του σταδίου των ερυθρών υπεργιγάντων (RSGs) και εμφανίζονται ως Κίτρινοι Υπεργίγαντες (YHGs), και θερμοί αστέρες της Κύριας Ακολουθίας που παρατηρούνται ως μέλη σε ενα ...
Μιχαήλ Κουρνιώτης
  +6 more sources

Tensile properties of functionalized carbon nanothreads

open access: yesNano Materials Science, 2022
Low dimensional sp3 carbon nanostructures have attracted increasing attention recently, due to their unique properties and appealing applications. Based on in silico studies, this work exploits the impacts from functional groups on the tensile properties
Haifei Zhan   +3 more
doaj   +1 more source

Comparative Study on Topological Properties of the Whole-Brain Functional Connectome in Idiopathic Rapid Eye Movement Sleep Behavior Disorder and Parkinson’s Disease Without RBD

open access: yesFrontiers in Aging Neuroscience, 2022
PurposeIdiopathic rapid eye movement Sleep Behavior Disorder (iRBD) is considered as a prodromal and most valuable warning symptom for Parkinson’s disease (PD).
Shuai Chen   +4 more
doaj   +1 more source

Gray matter structural networks related to 18F-THK5351 retention in cognitively normal older adults and Alzheimer's disease patients

open access: yeseNeurologicalSci, 2021
Objective: This study aimed to examine the alterations in gray matter networks related to tau retention in Alzheimer's disease (AD) patients and cognitively normal (CN) older individuals. Methods: Eighteen amyloid-positive AD patients and 30 age- and sex-
Yoko Shigemoto   +10 more
doaj   +1 more source

Bimodule properties of group-valued local fields and quantum-group difference equations [PDF]

open access: greenPhysics Letters B, 1996
We give an explicit construction of the quantum-group generators ---local, semi-local, and global --- in terms of the group-valued quantum fields $\tilde g$ and $\tilde g^{-1}$ in the Wess-Zumino-Novikov-Witten (WZNW) theory. The algebras among the generators and the fields make concrete and clear the bi-module properties of the $\tilde g$ and the ...
Ling-Lie Chau, Itaru Yamanaka
openalex   +4 more sources

Test map characterizations of local properties of fundamental groups [PDF]

open access: yesJournal of Topology and Analysis (JTA), 2017
Local properties of the fundamental group of a path-connected topological space can pose obstructions to the applicability of covering space theory. A generalized covering map is a generalization of the classical notion of covering map defined in terms ...
Jeremy Brazas, H. Fischer
semanticscholar   +1 more source

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