Results 111 to 120 of about 1,081,230 (234)

F-electron spectral function of the Falicov-Kimball model and the Wiener-Hopf sum equation approach

open access: yesCondensed Matter Physics, 2008
We derive an alternative representation for the f-electron spectral function of the Falicov-Kimball model from the original one proposed by Brandt and Urbanek.
A.M. Shvaika, J.K. Freericks
doaj   +1 more source

Efficacy and Safety of Zonisamide Addition in Children With Developmental Epileptic Encephalopathy/Epileptic Encephalopathy: A Real‐World Study

open access: yesCNS Neuroscience &Therapeutics, Volume 32, Issue 4, April 2026.
Adjunctive zonisamide provides sustained efficacy and favorable tolerability in children with DEE/EE, including young children < 6 years and highly drug‐resistant cases. Gender and prior treatment history predict long‐term efficacy, supporting its reliable risk–benefit profile for refractory epilepsy.
Peijiao Liu   +5 more
wiley   +1 more source

Lattice Theory and Toeplitz Determinants

open access: yes, 2018
This is a survey of our recent joint investigations of lattices that are generated by finite Abelian groups. In the case of cyclic groups, the volume of a fundamental domain of such a lattice is a perturbed Toeplitz determinant with a simple Fisher–Hartwig symbol.
Albrecht Büttcher   +3 more
openaire   +2 more sources

On determinants of cyclic pentadiagonal matrices with Toeplitz structure

open access: yesComputers & Mathematics with Applications, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ji-Teng Jia, Sumei Li
openaire   +1 more source

Toeplitz Determinants with One Fisher–Hartwig Singularity

open access: yesJournal of Functional Analysis, 1997
The authors study the asymptotic behaviour of the Toeplitz determinants \(T_n (c)\) as \(n\) tends to infinity in the case of symbols with one singularity. This symbol has a form \[ c(e^{i\theta} e^{i\theta}) \prod_{r}^R t_{\beta _r}\left( e^{i(\theta-i\theta _r)}\right) u_{\alpha _r}\left( e^{i(\theta-i\theta _r)}\right) \] where \(t_\beta \left (e^{i\
Ehrhardt, Torsten, Silbermann, Bernd
openaire   +1 more source

Double scaling limits of Toeplitz, Hankel and Fredholm determinants [PDF]

open access: yes, 2017
Toeplitz, Hankel and Fredholm determinants occur naturally in the study of the eigenvalues of the Circular Unitary Ensemble and the Gaussian Unitary Ensemble (GUE) of random matrices, as partition functions and gap probabilities.
Fahs, Benjamin
core  

Fourth Hankel and Toeplitz determinant estimates for certain analytic functions associated with Four Leaf function

open access: yesExtracta Mathematicae
The objective of this paper is to establish initial coefficient inequalities, Upper bounds to the Hankel and Toeplitz determinants for certain normalized univalent functions defined on the open unit disk D in the complex plane related to the analytic ...
R. Rudrani   +2 more
doaj   +1 more source

Third-Order Hankel and Toeplitz Determinants for Starlike Functions Connected with the Sine Function

open access: yesMathematics, 2019
Let S s * be the class of normalized functions f defined in the open unit disk D = { z : | z | < 1 } such that the quantity z f ′ ( z ) f ( z ) lies in an eight-shaped region in the right-half plane and satisfying
Hai-Yan Zhang   +2 more
doaj   +1 more source

Inverse and Logarithmic Coefficient Bounds of Concave Univalent Functions

open access: yesAxioms
The concept of coefficient estimates on univalent functions is one of the interesting aspects explored recently by many researchers. Motivated by this direction, in this present work, we obtain the upper bounds of initial inverse coefficients and ...
Kuppusami Sakthivel   +2 more
doaj   +1 more source

Asymptotic Behavior of Variable-Coefficient Toeplitz Determinants

open access: yesJournal of Fourier Analysis and Applications, 2001
Let \(\sigma\) be a continuous function on \([0,1]\times {\mathbb T}\), where \(\mathbb T\) is the unit circle. Denote by \(op_n \sigma\) the \((n+1)\times (n+1)\) matrix whose \((j,k)\)-entris are given by \({1 \over 2\pi} \int_0^{2\pi} \sigma ({j\over n}, e^{-i(j-k)\theta}) d\theta\).
Ehrhardt, Torsten, Shao, Bin
openaire   +2 more sources

Home - About - Disclaimer - Privacy