Results 101 to 110 of about 931 (215)

On n-quasi- [m,C] $[m,C]$-isometric operators

Journal of Inequalities and Applications, 2019
For positive integers m and n, an operator T∈B(H) $T \in B ( H )$ is said to be an n-quasi- [m,C] $[m,C]$-isometric operator if there exists some conjugation C such that T∗n(∑j=0m(−1)j(mj)CTm−jC.Tm−j)Tn=0 . In this paper, some basic structural properties
Junli Shen
doaj   +1 more source

Quick design of feasible tensor networks for constrained combinatorial optimization [PDF]

Quantum
Quantum computers are expected to enable fast solving of large-scale combinatorial optimization problems. However, their limitations in fidelity and the number of qubits prevent them from handling real-world problems.
Hyakka Nakada, Kotaro Tanahashi, Shu Tanaka   +2 more
doaj   +1 more source

Algorithm to compute minimal matrix representation of nilpotent lie algebras

International Journal of Computer Mathematics, 2019
As it is well-known there exist matrix representations of any given finite-dimensional complex Lie algebra. More concretely, such representations can be obtained by means of an isomorphic matrix Lie algebra consisting of upper-triangular square matrices.
Ceballos González, Manuel, Núñez-Valdés, Juan, Tenorio, Angel Francisco   +2 more
openaire   +3 more sources

Index reduction for rectangular descriptor systems via feedbacks

Cogent Engineering, 2017
Index plays a fundamental role in the study of descriptor systems. For regular descriptor systems, calculation of the index can be performed by calculating the index of the nilpotent matrix obtained by means of the Weierstrass canonical form ...
Vikas Kumar Mishra, Nutan Kumar Tomar, Mahendra Kumar Gupta   +2 more
doaj   +1 more source

Computational Study of Fuzzy Neutrosophic Soft Matrices in Python: Consistency and Weak Transitivity [PDF]

Neutrosophic Sets and Systems
In this study, we introduce a novel framework for defining and analyzing two specific types of Fuzzy Neutrosophic Soft Matrices (FNSMs): consistent and weakly transitive.
M Kavitha, Sive M, P Murugadas, K Rameshware   +3 more
doaj   +1 more source

On nilpotent subsemigroups in some matrix semigroups

, 2005
We describe maximal nilpotent subsemigroups of a given nilpotency class in the semigroup $Ω_n$ of all $n\times n$ real matrices with non-negative coefficients and the semigroup $\mathbf{D}_n$ of all doubly stochastic real matrices.
Ganyushkin, Olexandr, Mazorchuk, Volodymyr   +1 more
openaire   +3 more sources

On primeness and nilpotence in structural matrix near-rings [PDF]

Proceedings of the Edinburgh Mathematical Society, 1996
The structure of completely prime ideals in any structural matrix near-rings is determined. Partial descriptions are obtained for prime, nil, nilpotent, and locally nilpotent ideals of structural matrix near-rings. Their associated radicals are also studied in this paper.
openaire   +1 more source

Druzkowski matrix search and D-nilpotent automorphisms [PDF]

, 1999
In 1939 Keller conjectured that any polynomial mapping $f\colon\C^n\to\C^n$ with constant nonvanishing Jacobian determinant, should be invertible. This open problem bears the name of Jacobian conjecture.
ZAMPIERI, Gaetano, TUTAJ GASINSKA H., GORNI G.   +2 more
core  

Infinite distances in field space and massless towers of states

Journal of High Energy Physics, 2018
It has been conjectured that in theories consistent with quantum gravity infinite distances in field space coincide with an infinite tower of states becoming massless exponentially fast in the proper field distance.
Thomas W. Grimm, Eran Palti, Irene Valenzuela   +2 more
doaj   +1 more source

Linear systems with nilpotent leading term [PDF]

, 2003
For systems of meromorphic linear ODE with nilpotent leading term, there exist certain analytic transformations simplifying the coefficient matrix in a certain sense.
Balser, Werner
core   +1 more source