Results 11 to 20 of about 15,579,277 (362)

A 2-Compact Group as a Spets

open access: yesExperimental Mathematics, 2021
In 1993, Broué, Malle and Michel initiated the study of spetses on the Greek island bearing the same name. These are mysterious objects attached to non-real Weyl groups. In algebraic topology, a $p$-compact group $\mathbf{X}$ is a space which is a homotopy-theoretic $p$-local analogue of a compact Lie group.
Jason Semeraro (15296803)
openaire   +3 more sources

ACTIVITY IN GALACTIC NUCLEI OF COMPACT GROUP GALAXIES IN THE LOCAL UNIVERSE [PDF]

open access: yes, 2013
We study the nuclear activity of galaxies in local compact groups. We use a spectroscopic sample of 238 galaxies in 58 compact groups from the Sloan Digital Sky Survey data release 7 to estimate the fraction of active galactic nucleus (AGN) host galaxies
J. Sohn   +4 more
semanticscholar   +1 more source

The nub of an automorphism of a totally disconnected, locally compact group [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2011
To any automorphism, $\alpha $, of a totally disconnected, locally compact group, $G$, there is associated a compact, $\alpha $-stable subgroup of $G$, here called the nub of $\alpha $, on which the action of $\alpha $ is ergodic.
G. Willis
semanticscholar   +1 more source

Very compact UWB antenna with group delay improvement [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2015
In this paper, very compact (12mm×17mm) and simple UWB antenna is proposed. The achieved bandwidth of the presented antenna is from 3.05 GHz to 12.5 GHz and in the most of the bandwidth, the return loss is less than -20dB.
Tahanian Esmaeel, Hasani Hamidreza
doaj   +1 more source

Compact Groups of Galaxies selected by stellar mass: The 2MASS Compact Group Catalogue [PDF]

open access: yes, 2012
We present a photometric catalogue of compact groups of galaxies (p2MCGs) automatically extracted from the Two-Micron All Sky Survey (2MASS) extended source catalogue.
E. Díaz-Giménez   +13 more
semanticscholar   +1 more source

The probability that x and y commute in a compact group [PDF]

open access: yesMathematical Proceedings of the Cambridge Philosophical Society, 2010
We show that a compact group G has finite conjugacy classes, i.e., is an FC-group if and only if its center Z(G) is open if and only if its commutator subgroup G′ is finite. Let d(G) denote the Haar measure of the set of all pairs (x,y) in G×G for which [
K. Hofmann, F. Russo
semanticscholar   +1 more source

What is the meaning of urban liveability for a city in a low-to-middle-income country? Contextualising liveability for Bangkok, Thailand

open access: yesGlobalization and Health, 2019
Background Creating ‘liveable’ cities has become a priority for various sectors, including those tasked with improving population health and reducing inequities.
Amanda Alderton   +6 more
doaj   +1 more source

A High-Performance Microstrip Triplexer With Compact Size, Flat Channels and Low Losses for 5G Applications

open access: yesIEEE Access, 2023
A new microstrip triplexer with a compact size of $0.007~\lambda _{\mathrm {g}}^{2}$ is proposed in this work, where designing a microstrip triplexer with a size less than $0.01~\lambda _{\mathrm {g}}^{2}$ is a big challenge.
Salah I. Yahya   +8 more
doaj   +1 more source

About Nilpotent Profinite Groups Largely Satisfying a Word Equation [PDF]

open access: yesAdvances in Group Theory and Applications
We show that in a nilpotent profinite group, the set of answers of a word equation has nonempty interior, provided that this set has a positive Haar measure.
Meisam Soleimani Malekan
doaj   +1 more source

Compact Groups Of Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1997
This paper reviews some of the outstanding questions concerning compact groups of galaxies. These relate to the physical nature and dynamical status of the groups, their formation and evolution, and their role in galaxy evolution. The picture that emerges is that compact groups are generally physically dense systems, although often contaminated by ...
openaire   +2 more sources

Home - About - Disclaimer - Privacy