Results 11 to 20 of about 4,217,963 (196)

A condition on lengths of conjugacy classes and character degrees

open access: yes, 1996
E. Bannai investigated the following condition on finite groups. Let \(G\) be a finite group, \(\text{Irr}(G)=\{\chi_i\}_{1\leq i\leq k}\) be the set of all irreducible characters of \(G\), and \(\text{Cl}(G)=\{C_i\}_{1\leq i\leq k}\) be the set of all conjugacy classes of \(G\). Condition.
A. Hanaki
openaire   +5 more sources

Boundedly finite conjugacy classes of tensors [PDF]

open access: yesInternational Journal of Group Theory, 2021
Let $n$ be a positive integer and let $G$ be a group‎. ‎We denote by $\nu(G)$ a certain extension of the non-abelian tensor square $G \otimes G$ by $G \times G$‎. ‎Set $T_{\otimes}(G) = \{g \otimes h \mid g,h \in G\}$‎.
Raimundo Bastos, Carmine Monetta
doaj   +1 more source

One-prime power hypothesis for conjugacy class sizes [PDF]

open access: yesInternational Journal of Group Theory, 2017
A finite group $G$ satisfies the on-prime power hypothesis for conjugacy class sizes if any two conjugacy class sizes $m$ and $n$ are either equal or have a common divisor a prime power. Taeri conjectured that an insoluble group satisfying this condition
Alan Camina, Rachel Camina
doaj   +1 more source

Three-terms conjugate gradient algorithm based on the Dai-Liao and the Powell symmetric methods [PDF]

open access: yesKirkuk Journal of Science, 2017
Based on the Dai-Laio and Powell symmetric methods, we developed a new three – term conjugate gradient method for solving large-scale unconstrained optimization problem.
Prof. Khalil K. Abbo, Aynur J. Namik
doaj   +1 more source

CONJUGACY CLASS SIZE CONDITIONS WHICH IMPLY SOLVABILITY [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2013
AbstractLet $G$ be a finite $p$-solvable group and let ${G}^{\ast } $ be the set of elements of primary and biprimary orders of $G$. Suppose that the conjugacy class sizes of ${G}^{\ast } $ are $\{ 1, {p}^{a} , n, {p}^{a} n\} $, where the prime $p$ divides the positive integer $n$ and ${p}^{a} $ does not divide $n$.
Kong, Qingjun, Liu, Qingfeng
openaire   +1 more source

A New effected Three-Term Hestenes-Stiefel Conjugate-Gradient Method for Solving Unconstrained Optimization Problems

open access: yesTikrit Journal of Pure Science, 2023
In this paper a new three–term Conjugate Gradient (CG) method is suggested, the derivation of the method based on the descent property and conjugacy condition, the global convergence property is analyzed; numerical results indicate that the new proposed
Abbas Y. Al-Bayati   +2 more
doaj   +1 more source

A New Hybrid of DY and CGSD Conjugate Gradient Methods for Solving Unconstrained Optimization Problems

open access: yesTikrit Journal of Pure Science, 2021
In this article, we present a new hybrid conjugate gradient method for solving large Scale in unconstrained optimization problems. This method is a convex combination of Dai-Yuan conjugate gradient and Andrei- sufficient descent condition, satisfies the
Zeyad Mohammed Abdullah   +1 more
doaj   +1 more source

New Conjugacy Coefficient for Conjugate Gradient Method for Unconstrained Optimization [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this paper, we derived a new conjugacy coefficient of conjugate gradient method which is based on non-linear function using inexact line searches. This method satisfied sufficient descent condition and the converges globally is provided. The numerical
Hamsa Chilmeran, Huda Najm
doaj   +1 more source

Deciding Conjugacy of a Rational Relation [PDF]

open access: yesarXiv.org, 2023
The study of rational relations is fundamental to the study of formal languages and automata theory. A rational relation is conjugate if each pair of words in the relation is conjugate (or cyclic shifts of each other).
C. Aiswarya, Amaldev Manuel, Saina Sunny
semanticscholar   +1 more source

A Robust Spectral Three-Term Conjugate Gradient Algorithm for Solving Unconstrained Minimization Problems [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2019
In this paper, we investigated a new improved Conjugate  Gradient (CG) algorithm of a Three-Term type (TTCG) based on Dai and Liao procedure to improve the CG algorithm  of (Hamoda, Rivaie, and Mamat / HRM).
Abbas Al-Bayati, Sabreen Abbas
doaj   +1 more source

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