Results 21 to 30 of about 7,615 (257)
Results in Physics, 2023 Using unitary and similarity transformations, explicit solutions of the coupled Gross–Pitaevskii models with spin–orbit coupling and varying nonlinearities and harmonic plus linear potentials are constructed by a mapping to the integrable one-dimensional
D. Belobo Belobo, T. Meier
doaj +1 more source
Between the unitary and similarity orbits of normal operators [PDF]
Pacific Journal of Mathematics, 1993 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guinand, Paul S., Marcoux, Laurent
openaire +2 more sources
Unitary automorphisms of the space of Toeplitz-plus-Hankel matrices
Special Matrices, 2015 Our motivation was a paper of 1991 indicating three special unitary matrices that map Hermitian Toeplitz matrices by similarity into real Toeplitz-plus-Hankel matrices.
Abdikalykov A.K. +2 more
doaj +1 more source
A unification of unitary similarity transforms to compressed representations [PDF]
Numerische Mathematik, 2011 The authors propose algorithms which rely on the \(QR\)-factorization of the involved matrices. Even though using the \(QR\)-factorization for Hessenberg (H) matrices seems redundant, for many classes of structured rank matrices it provides means for a compact representation.
Raf Vandebril, Gianna M. Del Corso
openaire +2 more sources
Sistem Federal Dalam Negara Kesatuan (Kasus Pengaturan Desentralisasi-Otonomi)
JSP: Jurnal Ilmu Sosial dan Ilmu Politik, 2002 In fact, unitary state and federal state system has similarity in the reladon between nation orpusat and states or daerah, emphasizing in power sharing, negotiation and distribution of income.
Warsito Utomo
doaj +1 more source
Entanglement of purification and projection operator in conformal field theories
Physics Letters B, 2019 We investigate entanglement of purification (EoP) in conformal field theory. By using Reeh-Schlieder theorem, we construct a set of the purification states for ρAB, where ρAB is reduced density matrix for subregion AB of a global state ρ.
Wu-Zhong Guo
doaj +1 more source
A note on multilevel Toeplitz matrices
Special Matrices, 2019 Chien, Liu, Nakazato and Tam proved that all n × n classical Toeplitz matrices (one-level Toeplitz matrices) are unitarily similar to complex symmetric matrices via two types of unitary matrices and the type of the unitary matrices only depends on the ...
Cao Lei, Koyuncu Selcuk
doaj +1 more source
On unitary similarity of matrices
Linear Algebra and its Applications, 1989 The authors give a test for two \(n\times n\) nonsingular matrices with n distinct singular values to be unitarily similar. This depends on the equivalence of the traces of certain polynomials in the matrices and their adjoints. They remark that the method of proof can be extended to cover the situation when the matrices are singular and the nonzero ...
Bhattacharya, Ratna, Mukherjea, Kalyan
openaire +2 more sources
Advances in Mathematical Physics, 2014 A formulation based on Lie group homomorphisms is presented for simplifying the treatment of unitary similarity transformations of Hamiltonian matrices in nonadiabatic photochemistry. A general derivation is provided whereby it is shown that a similarity
Benjamin Lasorne
doaj +1 more source
Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing
Frontiers in Psychology, 2017 The structural similarity of objects has been an important variable in explaining why some objects are easier to categorize at a superordinate level than to individuate, and also why some patients with brain injury have more difficulties in recognizing ...
Christian Gerlach
doaj +1 more source