Results 21 to 30 of about 12,308 (240)

A relaxed block splitting preconditioner for complex symmetric indefinite linear systems

open access: yesOpen Mathematics, 2018
In this paper, we propose a relaxed block splitting preconditioner for a class of complex symmetric indefinite linear systems to accelerate the convergence rate of the Krylov subspace iteration method and the relaxed preconditioner is much closer to the ...
Huang Yunying, Chen Guoliang
doaj   +1 more source

Analogues of the Newton formulas for the block-symmetric polynomials on $\ell_p(\mathbb{C}^s)$

open access: yesCarpathian Mathematical Publications, 2020
The classical Newton formulas gives recurrent relations between algebraic bases of symmetric polynomials. They are true, of course, for symmetric polynomials on infinite-dimensional sequences Banach space. In this paper we consider block-symmetric polynomials (or MacMahon symmetric polynomials) on Banach spaces $\ell_p(\mathbb{C}^s),$ $1\le p\le \infty.
openaire   +3 more sources

The invariants of the third symmetric power representation of SL_2(F_p) [PDF]

open access: yes, 2010
For a prime p>3, we compute a finite generating set for the SL_2(F_p)-invariants of the third symmetric power representation. The proof relies on the construction of an infinite SAGBI basis and uses the Hilbert series calculation of Hughes and ...
R. James Shank   +3 more
core   +1 more source

Decomposing symmetric powers of certain modular representations of cyclic groups [PDF]

open access: yes, 2009
For a prime number p, we construct a generating set for the ring of invariants for the p+1 dimensional indecomposable modular representation of a cyclic group of order p^2.
David L. Wehlau   +3 more
core   +1 more source

Discrete-time symmetric polynomial equations with complex coefficients [PDF]

open access: yes, 2002
summary:Discrete-time symmetric polynomial equations with complex coefficients are studied in the scalar and matrix case. New theoretical results are derived and several algorithms are proposed and evaluated.
Henrion, Didier   +2 more
core   +1 more source

The equivalence of two graph polynomials and a symmetric function

open access: yes, 2009
The U-polynomial, the polychromate and the symmetric function generalization of the Tutte polynomial due to Stanley are known to be equivalent in the sense that the coefficients of any one of them can be obtained as a function of the coefficients of any ...
Noble, SD   +5 more
core   +1 more source

On convergence of the maximum block improvement method

open access: yes, 2015
. The MBI (maximum block improvement) method is a greedy approach to solving optimization problems where the decision variables can be grouped into a finite number of blocks. Assuming that optimizing over one block of variables while fixing all others is
Shuzhong Zhang   +5 more
core   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

open access: yesAdvanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari   +3 more
wiley   +1 more source

Conditioning and backward error of block-symmetric block-tridiagonal linearizations of matrix polynomials

open access: yes, 2017
For each square matrix polynomial $P(λ)$ of odd degree, a block-symmetric block-tridiagonal pencil $\mathcal{T}_{P}(λ)$ was introduced by Antoniou and Vologiannidis in 2004, and a variation $\mathcal{R}_P(λ)$ was introduced by Mackey et al. in 2010. These two pencils have several appealing properties, namely they are always strong linearizations of $P ...
Bueno, M. I.   +3 more
openaire   +2 more sources

Faster One Block Quantifier Elimination for Regular Polynomial Systems of Equations

open access: yes, 2021
International audienceQuantifier elimination over the reals is a central problem incomputational real algebraic geometry, polynomial system solving andsymbolic computation.
Le, Huu Phuoc, Safey El Din, Mohab
core   +1 more source

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