Results 71 to 80 of about 1,081,230 (234)

Active Electromagnetic Interference Suppression for MRI and Proton Resonance Frequency Shift Thermometry During MRI‐Guided Microwave Ablation

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 4, Page 1572-1588, October 2026.
ABSTRACT Purpose To develop a software‐based active electromagnetic interference (EMI) suppression (AES) framework on whole‐body multi‐channel MRI systems for reliable MRI and MR thermometry during MRI‐guided microwave ablation (MWA). Methods In addition to primary imaging coils, an unloaded standard body array coil was positioned outside the imaging ...
Qing Dai   +5 more
wiley   +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  

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

The Mathematical History Behind the Granger–Johansen Representation Theorem

open access: yesOxford Bulletin of Economics and Statistics, Volume 88, Issue 4, Page 587-602, August 2026.
ABSTRACT When can a vector time series that is integrated once (i.e., becomes stationary after taking first differences) be described in error correction form? The answer to this is provided by the Granger–Johansen representation theorem. From a mathematical point of view, the theorem can be viewed as essentially a statement concerning the geometry of ...
Johannes M. Schumacher
wiley   +1 more source

Discrete Toeplitz Determinants and their Applications. [PDF]

open access: yes, 2014
In this dissertation, we consider the asymptotics of discrete Toeplitz determinants. We find a simple identity which express a discrete Toeplitz determinant as the product of a continuous Toeplitz determinant and a Fredholm determinant, whose kernel only
Liu, Zhipeng, Zhipeng Liu
core  

Hankel and Toeplitz Determinants of Logarithmic Coefficients of Inverse Functions for the Subclass of Starlike Functions with Respect to Symmetric Conjugate Points

open access: yesEuropean Journal of Pure and Applied Mathematics
This paper focuses on finding the upper bounds of the second Hankel and Toeplitz determinants, whose entries are logarithmic coefficients of inverse functions for a new subclass of starlike functions with respect to symmetric conjugate points associated ...
N. Hazwani   +3 more
semanticscholar   +1 more source

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

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

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

Multiple phases in a generalized Gross-Witten-Wadia matrix model

open access: yesJournal of High Energy Physics, 2020
We study a unitary matrix model of the Gross-Witten-Wadia type, extended with the addition of characteristic polynomial insertions. The model interpolates between solvable unitary matrix models and is the unitary counterpart of a deformed Cauchy ensemble.
Jorge G. Russo, Miguel Tierz
doaj   +1 more source

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