Results 41 to 50 of about 244 (80)

The Drazin inverse of a semilinear transformation and its matrix representation [PDF]

open access: yes, 1987
The Drazin inverse Td of a semilinear transformation T on Cn is studied.
Bevis, Jean H.   +2 more
core   +1 more source

Geometric polarimetry - part II: the Antenna Height Spinor and the Bistatic Scattering Matrix [PDF]

open access: yes, 2017
This paper completes the fundamental development of the basic coherent entities in Radar Polarimetry for coherent reciprocal scattering involving polarized wave states, antenna states and scattering matrices. The concept of antenna polarization states as
Bebbington, David, Carrea, Laura
core   +1 more source

SCATTERER CHARACTERIZATION BASED ON THE CONDIAGONALIZATION OF THE SINCLAIR BACKSCATTERING MATRIX

open access: yesProgress In Electromagnetics Research M, 2019
In this paper, we revisit the condiagonalization of the Sinclair backscattering matrix, to overcome the Huynen decomposition issues, so as to correctly extract scatterer polarimetric properties. The correct extraction of scatterer polarimetric properties
G. Kouroupis, V. Anastassopoulos
semanticscholar   +1 more source

On the reduction of pairs of hermitian or symmetric matrices to diagonal form by congruence [PDF]

open access: yes, 1986
Let A1, A2 be given n-by-n Hermitian or symmetric matrices, and consider the simultaneous transformations Ai→SAiS* if Ai is Hermitian or Ai→SAiST if Ai is symmetric.
Hong, Yoo Pyo   +2 more
core   +1 more source

Classification of pairs of rotations in finite-dimensional Euclidean space

open access: yes, 2008
A rotation in a Euclidean space V is an orthogonal map on V which acts locally as a plane rotation with some fixed angle. We give a classification of all pairs of rotations in finite-dimensional Euclidean space, up to simultaneous conjugation with ...
Darpö, Erik
core   +2 more sources

The intersection of the similarity and conjunctivity equivalence classes [PDF]

open access: yes, 2003
Let A be an n×n complex matrix. Let Sim(A) denote the similarity equivalence class of A, let Conj(A) denote the conjunctivity equivalence class of A, and let U(A) denote the unitary similarity equivalence class of A. Define CS(A)≡Sim(A)∩Conj(A).
Mills, Mark A.
core   +1 more source

On condiagonalizable matrices [PDF]

open access: yes, 2007
We call A∈Mn(C) a condiagonalizable matrix if AR=AA¯ (or, which is the same, AL=A¯A) is diagonalizable by a conventional similarity transformation. Our main result is that any condiagonalizable matrix can be brought by a consimilarity transformation to a
Ikramov, Khakim D.
core   +1 more source

Iterative solutions to coupled Sylvester-conjugate matrix equations [PDF]

open access: yes, 2010
This paper is concerned with iterative solutions to the coupled Sylvester-conjugate matrix equation with a unique solution. By applying a hierarchical identification principle, an iterative algorithm is established to solve this class of complex matrix ...
Duan, Guang-Ren   +3 more
core   +1 more source

How real is your matrix? [PDF]

open access: yes, 2007
For scalars there is essentially just one way to define reality, real part and to measure nonreality. In this paper various ways of defining respective concepts for complex-entried matrices are considered.
Huhtanen, Marko
core   +1 more source

Isotropy groups of the action of orthogonal *congruence on Hermitian matrices

open access: yes, 2023
We present a procedure which enables the computation and the description of structures of isotropy subgroups of the group of complex orthogonal matrices with respect to the action of *congruence on Hermitian matrices.
Starčič, Tadej
core  

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