Results 81 to 90 of about 328,340 (188)

Two-Step Root-MUSIC for Direction of Arrival Estimation without EVD/SVD Computation

International Journal of Antennas and Propagation, 2018
Most popular techniques for super-resolution direction of arrival (DOA) estimation rely on an eigen-decomposition (EVD) or a singular value decomposition (SVD) computation to determine the signal/noise subspace, which is computationally expensive for ...
Feng-Gang Yan, Shuai Liu, Jun Wang, Ming Jin   +3 more
doaj   +1 more source

Measurement-efficient quantum Krylov subspace diagonalisation [PDF]

Quantum
The Krylov subspace methods, being one category of the most important classical numerical methods for linear algebra problems, can be much more powerful when generalised to quantum computing.
Zongkang Zhang, Anbang Wang, Xiaosi Xu, Ying Li   +3 more
doaj   +1 more source

Applications of alternative problems [PDF]

Solution to equations in function space relating linear operator defined in subspace of Banach space and linear or nonlinear ...
Hale, J. K.
core   +1 more source

Linear subspaces in cubic hypersurfaces

Israel Journal of Mathematics
We prove that for any cubic polynomial of slice rank $r$, the intersection of all linear subspaces of minimal codimension contained in the corresponding hypersurface has codimension $\le r^2+\frac{(r+1)^2}{4}+r$ in the affine space. This is deduced from the following result of independent interest. Consider the intersection $I$ of linear ideals $(P_i)$
Polishchuk, Alexander, Wang, Chen
openaire   +3 more sources

Subspace system identification

Iranian Journal of Electrical and Electronic Engineering, 2005
We give a general overview of the state-of-the-art in subspace system identification methods. We have restricted ourselves to the most important ideas and developments since the methods appeared in the late eighties.
J. Poshtan, H. Mojallali
doaj  

Classification of linear differential operators with an invariant subspace of monomials

, 1993
A complete classification of linear differential operators possessing finite-dimensional invariant subspace with a basis of monomials is presented.Comment: 10 ...
Post, Gerhard, Turbiner, Alexander
core   +1 more source

The Rough Linear Approximate Space and Soft Linear Space

Journal of Intelligent Systems, 2016
The studies of rough sets and soft sets, which can deal with uncertain problems in real life, have developed rapidly in recent years. We have known that linear space is a very important concept in linear algebra, so the aim of this paper was mainly ...
Ma Yingcang, Li Shaoyang, Liu Yamei
doaj   +1 more source

Configurations of linear subspaces and rational invariants.

Michigan Mathematical Journal, 1999
15 pages, to appear in Michigan Math ...
openaire   +4 more sources

On the uniqueness of extension and unique best approximation in the dual of an asymmetric normed linear space

Journal of Numerical Analysis and Approximation Theory, 2003
A well known result of R. R. Phelps (1960) asserts that in order that every linear continuous functional, defined on a subspace \(Y\) of a real normed space \(X\), have a unique norm preserving extension it is necessary and sufficient that its ...
Costică Mustăţa
doaj   +2 more sources

Invertible Subspace-Hypercyclic Operators

Journal of Mathematical Extension, 2015
A bounded linear operator on a Banach space X is called subspace-hypercyclic for a subspace M if Orb(T, x) \ M is dense in M for a vector x 2 M. In this paper we give conditions under which an operator is M-hypercyclic.
S. Talebi, B. Yousefi, M. Asadipour
doaj