Results 21 to 30 of about 5,183 (263)

Some Coupled Coincident Point Theorems in Metric Space

Fuzzy Optimization and Modeling, 2022
In this present work, we prove coupled coincident point theorem for contractive mappings F:X×X⟶X and g:X⟶X such that F(X×X)⊆g(X) in metric spaces that have a nonempty F- invariant and g-invariant complete subset and we prove uniqueness coupled ...
Samaneh Ghods
doaj   +1 more source

Invariant subspaces, exact solutions and stability analysis of nonlinear water wave equations

Journal of Ocean Engineering and Science, 2020
The key purpose of the present research is to derive the exact solutions of nonlinear water wave equations (NLWWEs) in oceans through the invariant subspace scheme (ISS).
K. Hosseini, M. Inc, M. Shafiee, M. Ilie, A. Shafaroody, A. Yusuf, M. Bayram   +6 more
doaj   +1 more source

Group-invariant Subspace Clustering [PDF]

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2015
Proceedings of Allerton ...
Shuchin Aeron, Eric Kernfeld
openaire   +2 more sources

The continuum limit of quantum gravity at first order in perturbation theory

Journal of High Energy Physics, 2020
The Wilsonian renormalization group (RG) properties of the conformal factor of the metric are profoundly altered by the fact that it has a wrong-sign kinetic term.
Alex Mitchell, Tim R. Morris
doaj   +1 more source

Invariant Subspaces for Derivations [PDF]

Proceedings of the American Mathematical Society, 1988
In this article it is proved that most of the known sufficient conditions for a subspace from Lat A \mathcal {A}
openaire   +1 more source

Convergence of Restarted Krylov Subspaces to Invariant Subspaces [PDF]

SIAM Journal on Matrix Analysis and Applications, 2004
The authors prove estimates for the angle (strictly spoken: for the containment gap) between a searched invariant subspace of a general \(n\times n\) matrix and the subspace generated by Krylov subspace methods like the Arnoldi algorithm or the biorthogonal Lanczos algorithm.
Christopher Beattie, Mark Embree, John Rossi   +2 more
openaire   +1 more source

Infinite dimensional linear groups with a spacious family of $G$-invariant subspaces [PDF]

Математичні Студії, 2013
Let $F$ be a field, $A$ be a vector space over $F$, $GL (F, A)$ be the group of all automorphisms of the vector space $A$. If $B leq A$ then denote by $mathop{m Core}_G (B)$ the largest $G$-invariant subspace of~$B$.
A. V. Sadovnichenko
doaj  

Covariants, Invariant Subsets, and First Integrals [PDF]

Épijournal de Géométrie Algébrique, 2020
Let $k$ be an algebraically closed field of characteristic 0, and let $V$ be a finite-dimensional vector space. Let $End(V)$ be the semigroup of all polynomial endomorphisms of $V$.
Frank Grosshans, Hanspeter Kraft
doaj   +1 more source

Invariant subspace problem and compact operators on non-Archimedean Banach spaces

Extracta Mathematicae, 2020
In this paper, the invariant Subspace Problem is studied for the class of non-Archimedean compact operators on an infinite-dimensional Banach space E over a nontrivial complete non-Archimedean valued field K.
M. Babahmed, Azzedine El asri
doaj  

Invariant Subspace and Classification of Soliton Solutions of the Coupled Nonlinear Fokas-Liu System

Frontiers in Physics, 2019
In this work, the coupled nonlinear Fokas-Liu system which is a special type of KdV equation is studied using the invariant subspace method (ISM). The method determines an invariant subspace and construct the exact solutions of the nonlinear partial ...
Aliyu Isa Aliyu, Yongjin Li, Dumitru Baleanu, Dumitru Baleanu   +3 more
doaj   +1 more source