Results 21 to 30 of about 4,217,963 (196)

Groups with many Subgroups which are Commensurable with some Normal Subgroup [PDF]

open access: yesAdvances in Group Theory and Applications, 2019
A subgroup H of a group G is called commensurable with a normal subgroup (cn) if there is N C G such that |HN/(H ∩ N)| is finite. We characterize generalized radical groups G which have one of the following finiteness conditions: (A) the minimal ...
Ulderico Dardano, Silvana Rinauro
doaj   +1 more source

Twisted conjugacy in linear algebraic groups II [PDF]

open access: yesJournal of Algebra, 2021
Let $G$ be a linear algebraic group over an algebraically closed field $k$ and $\mathrm{Aut}_{\mathrm{alg}}(G)$ the group of all algebraic group automorphisms of $G$. For every $\varphi\in \mathrm{Aut}_{\mathrm{alg}}(G)$ let $\mathcal{R}(\varphi)$ denote
Sushil Bhunia, A. Bose
semanticscholar   +1 more source

Functorial properties of Putnam's homology theory for Smale spaces [PDF]

open access: yes, 2015
We investigate functorial properties of Putnam's homology theory for Smale spaces. Our analysis shows that the addition of a conjugacy condition is necessary to ensure functoriality.
Deeley, Robin J.   +2 more
core   +3 more sources

Topological model of composite fermions in the cyclotron band generator picture: New insights

open access: yesResults in Physics, 2018
A combinatorial group theory in the braid groups is correlated with the unusual “anyon” statistic of particles in 2D Hall system in the fractional quantum regime well.
Beata Staśkiewicz
doaj   +1 more source

Groups with reality and conjugacy conditions

open access: yesInternational Journal of Group Theory, 2012
Many results were proved on the structure of finite groups with some restrictions on their real elements and on their conjugacy classes. We generalize a few of these to some classes of infinite groups. We study groups in which real elements are central, groups in which real elements are 2-elements, groups in which all non-trivial classes have the same ...
D. CHILLAG   +2 more
openaire   +3 more sources

Conjugacy of real diffeomorphisms. A survey [PDF]

open access: yes, 2011
Given a group G, the conjugacy problem in G is the problem of giving an effective procedure for determining whether or not two given elements f, g of G are conjugate, i.e. whether there exists h belonging to G with fh = hg.
O'Farrell, Anthony G., Roginskaya, Maria
core   +2 more sources

The spectral form of the Dai-Yuan conjugate gradient algorithm [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2011
Conjugate Gradient (CG) methods comprise a class of unconstrained optimization algorithms which are characterized by low memory requirements and strong local and global convergence properties.
Abdul-Ghafoor J. Salem, Khalil K. Abbo
doaj   +1 more source

A sufficient condition for conjugacy of metric automorphisms [PDF]

open access: yesTransactions of the American Mathematical Society, 1966
From the author's introduction: In this paper we take an idea of \textit{G.-C. Rota}'s [Proc. Am. Math. Soc. 13, 659--662 (1962; Zbl 0117.10404)] and define a ``universal'' metric automorphism on a product space such that if \(T\) is any metric automorphism of one of the factor spaces there is an invariant subalgebra of the domain of the universal ...
openaire   +2 more sources

A New Three–Term Conjugate Gradient Method with Descent Direction for Unconstrained Optimization

open access: yesMathematical Modelling and Analysis, 2016
In this paper, we propose a three–term PRP–type conjugate gradient method which always satisfies the sufficient descent condition independently of line searches employed.
XiaoLiang Dong   +4 more
doaj   +1 more source

A finiteness condition for verbal conjugacy classes in a group

open access: yesPublicationes Mathematicae Debrecen, 2013
JOSE M. MUNOZ-ESCOLANO, PAVEL SHUMYATSKY
openaire   +2 more sources

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