Results 61 to 70 of about 1,081,230 (234)

On Matrix‐Based Cryptography Using Matrix Norm and Special Integer Sequences

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT In this paper, a novel matrix‐based encryption approach based on the Affine Hill cipher is presented. The key matrix is constructed using the Narayana integer sequence, and the Frobenius norm of the key matrix is used as a scaling factor in the key construction.
Melih Göcen   +1 more
wiley   +1 more source

Sharp Bounds on Toeplitz Determinants for Starlike and Convex Functions Associated with Bilinear Transformations

open access: yesSymmetry
Starlike and convex functions have gained increased prominence in both academic literature and practical applications over the past decade. Concurrently, logarithmic coefficients play a pivotal role in estimating diverse properties within the realm of ...
P. Sabir
semanticscholar   +1 more source

A Quantised Push‐Sum Distributed Adaptive Momentum Algorithm for Optimisation Over Directed Networks

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT In this paper, we investigate a distributed constrained optimisation problem over directed networks. The agents in the networks conduct local computations and communications, endeavouring to collaboratively minimise the aggregation of all locally known convex cost functions subject to a global constraint set.
Qingguo Lü   +6 more
wiley   +1 more source

Hermitian-Toeplitz determinants for a subclass of analytic functions

open access: yesMathematics and Computer Science
In this study, we obtain sharp bounds for the second Hermitian- Toeplitz determinants of a subclass of analytics functions in the open unit disk.
M. Buyankara, ∗. MuratC¸A˘GLAR
semanticscholar   +1 more source

Sharp Bounds of the Hermitian Toeplitz Determinants for Certain Close-to-Star Functions

open access: yesBulletin of the Iranian Mathematical Society, 2022
The sharp lower and upper bounds of the Hermitian Toeplitz determinants of the second and third order for certain close-to-star functions are computed.
A. Lecko, Barbara Śmiarowska
semanticscholar   +1 more source

Signal Extraction and Clustering of Partial Discharge in Motor Insulation Using Temporal Correlation‐Based Clustering

open access: yesHigh Voltage, EarlyView.
ABSTRACT As one of the important links in energy transition and global energy interconnection, electric vehicles (EVs) are becoming increasingly major research topics in the field of energy. Partial discharge (PD) identification under repetitive impulsive voltages plays a pivotal role in evaluating the health of electric vehicle (EV) motor insulation ...
Li Wang   +7 more
wiley   +1 more source

A Computational Algorithm for Special Nth-Order Pentadiagonal Toeplitz Determinants [PDF]

open access: yes, 2008
In this short note, we present a fast and reliable algorithm for evaluating special nth-order pentadiagonal Toeplitz determinants in linear time. The algorithm is suited for implementation using Computer Algebra Systems ( CAS) such as MAC-SYMA and MAPLE.
El-Mikkawy, Moawwad, Kılıç, Emrah
core   +1 more source

Estimation of coefficient bounds for a subclass of Sakaguchi kind functions mapped onto various domains

open access: yesConcrete Operators, 2023
In this article, we define a new subclass of analytic functions ℛ(t,δ){\mathcal{ {\mathcal R} }}\left(t,\delta ) in the open unit disk D{\mathbb{D}} associated with the petal-shaped domain.
Aarthy B., Keerthi B. Srutha
doaj   +1 more source

The determination of companion matrices characterizing toeplitz and r-Toeplitz matrices

open access: yesLinear Algebra and its Applications, 1989
The purpose is to show that a companion Toeplitz (T) matrix and its r- Toeplitz (S) matrix counterpart can be replaced by much simpler results if one considers the inverses of T and S.
openaire   +1 more source

Toeplitz Determinants for the Class of Functions with Bounded Turning

open access: yesEuropean Journal of Pure and Applied Mathematics, 2022
In this paper, we obtain the upper bounds of the Toeplitz determinants for the class of functions with bounded turning. We also present some consequences of our main results. Some estimates obtained on Toeplitz determinants are sharp.
Nur Hazwani Aqilah Abdul Wahid   +3 more
semanticscholar   +1 more source

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