Results 61 to 70 of about 480 (210)

Tau Functions and the Limit of Block Toeplitz Determinants [PDF]

open access: yesInternational Mathematics Research Notices, 2015
22 ...
Cafasso, Mattia, Wu, Chao-Zhong
openaire   +3 more sources

Least‐Resistance Path as a Proxy for Efficient Simulation of Solute Transport in Heterogeneous Porous Media

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Accurately predicting solute transport remains a central challenge in hydrogeology due to limited data and multiscale subsurface heterogeneity. Fractional Brownian motion (fBm) is widely used to model the logarithm of hydraulic conductivity fields.
Binhao Li   +2 more
wiley   +1 more source

Alexandrov’s inequality and conjectures on some Toeplitz matrices [PDF]

open access: yes, 2007
We study determinant inequalities for certain Toeplitz-like matrices over C. For fixed n and N⩾1, let Q be the n×(n+N−1) zero–one Toeplitz matrix with Qij=1 for 0⩽j−i⩽N−1 and Qij=0 otherwise.
Klemeš, Ivo
core   +1 more source

Bounds on Toeplitz Determinant for Starlike Functions with Respect to Conjugate Points

open access: yesInternational Journal of Analysis and Applications, 2021
This paper is concerned with the estimate of the upper bounds of the Toeplitz determinants |T2(3)| and |T3(3)| for functions belonging to the subclass of starlike functions with respect to conjugate points.
Daud Mohamad   +1 more
doaj  

A compatibility criterion for optimal control and information aggregation in hierarchical network systems

open access: yesAsian Journal of Control, Volume 28, Issue 4, Page 1722-1733, July 2026.
Abstract Large swarms often adopt a hierarchical network structure that incorporates information aggregation. Although this approach offers significant advantages in terms of communication efficiency and computational complexity, it can also lead to degradation due to information constraints.
Kento Fujita, Daisuke Tsubakino
wiley   +1 more source

Determinants of multiplicative Toeplitz matrices [PDF]

open access: yesActa Arithmetica, 2006
In this paper we study matrices A = (aij) whose (i;j) th -entry is a function of i=j; that is, aij = f(i=j) for some f :Q + !C. We obtain a formula for the truncated determinants in the case where f is multiplicative, linking them to determinants of truncated Toeplitz matrices.
openaire   +1 more source

Inversion of quasitriangular block Toeplitz matrices [PDF]

open access: yes, 1992
A method of inversion and a formula for the determinant are given for the Hessenberg-type block Toeplitz matrix [Ai-j]nn-1i,jj=0,n = 1,2,…, where Ai= 0 for all i < -q and A-q is a nonzero singular ...
Gorodetsky, Michael
core   +1 more source

Sharp estimates of the Toeplitz determinants of certain order for the primary subclasses of univalent functions

open access: yesМатематичні Студії
The primary object of this paper is to investigate sharp estimate to the Toeplitz determinants of third order for the class of bounded turning functions and fourth order for the class of starlike and convex functions in the open unit disk $\mathbb{D ...
Bareh Winne   +2 more
doaj   +1 more source

Fekete-Szegö Type Problems and Their Applications for a Subclass of q-Starlike Functions with Respect to Symmetrical Points

open access: yesMathematics, 2020
In this article, by using the concept of the quantum (or q-) calculus and a general conic domain Ω k , q , we study a new subclass of normalized analytic functions with respect to symmetrical points in an open unit disk.
Hari Mohan Srivastava   +5 more
doaj   +1 more source

Group Differences of Multiregion Glutamate Concentration in Clinical High Risk and Schizophrenia

open access: yesEuropean Journal of Neuroscience, Volume 64, Issue 1, July 2026.
We investigated group effects of glutamate concentrations in 99 participants in four brain regions using proton magnetic resonance spectroscopy in clinical high risk, schizophrenia spectrum psychotic disorder individuals and healthy controls. Results showed no significant group differences, exploratory analyses showed significant positive symptom ...
Shue Kit Man   +7 more
wiley   +1 more source

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