Results 51 to 60 of about 385 (161)
Weakly subnormal subgroups and variations of the Baer–Suzuki theorem
Journal of the London Mathematical Society, Volume 111, Issue 1, January 2025.Abstract A subgroup R$R$ of a finite group G$G$ is weakly subnormal in G$G$ if R$R$ is not subnormal in G$G$ but it is subnormal in every proper overgroup of R$R$ in G$G$. In this paper, we first classify all finite groups G$G$ that contains a weakly subnormal p$p$‐subgroup for some prime p$p$.
Robert M. Guralnick +2 more
wiley +1 more source
IET Image Processing, Volume 18, Issue 13, Page 4189-4206, 13 November 2024.This research work presents a novel secured spatial steganography algorithm consisting of three stages. In the first stage, a secret message is divided into three parts, each is encrypted using a tan logistic map encryption key with a unique seed value.
Wassim Alexan +5 more
wiley +1 more source
mid-pSquare: Leveraging the Strong Side-Channel Security of Prime-Field Masking in Software
Transactions on Cryptographic Hardware and Embedded SystemsEfficiently protecting embedded software implementations of standard symmetric cryptographic primitives against side-channel attacks has been shown to be a considerable challenge in practice.
Brieuc Balon +5 more
doaj +1 more source
Strong divisibility sequences and sieve methods
Mathematika, Volume 70, Issue 4, October 2024.Abstract We investigate strong divisibility sequences and produce lower and upper bounds for the density of integers in the sequence that only have (somewhat) large prime factors. We focus on the special cases of Fibonacci numbers and elliptic divisibility sequences, discussing the limitations of our methods.
Tim Browning, Matteo Verzobio
wiley +1 more source
Mersenne Primes in Real Quadratic Fields
, 2012 The concept of Mersenne primes is studied in real quadratic fields of class number 1. Computational results are given. The field $Q(\sqrt{2})$ is studied in detail with a focus on representing Mersenne primes in the form $x^{2}+7y^{2}$. It is also proved that $x$ is divisible by 8 and $y\equiv \pm3\pmod{8}$ generalizing the result of F Lemmermeyer ...
Palimar, Sushma, Shankar, B. R.
openaire +3 more sources
Variational approaches to the elasticity of deformable strings with and without mass redistribution
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 104, Issue 8, August 2024.Abstract The catenary is a curve that has played a significant role in the history of mathematics, finding applications in various disciplines such as mechanics, technology, architecture, the arts, and biology. In this paper, we introduce some generalizations by applying the variational method to deformable strings.
Stefano Giordano
wiley +1 more source
On the convergence property of the sum of reciprocals of Mersenne primes [PDF]
, 2014 The sum of reciprocals of Mersenne primes converges to 0.51645417894078856533・・・
Tanaka, Yoshihiro
core
Quarterly Journal of the Royal Meteorological Society, Volume 150, Issue 762, Page 3052-3077, July 2024 Part A.When estimating observation‐error covariance matrices using observation‐minus‐background and observation‐minus‐analysis residuals obtained from data assimilation systems, the error comes from two sources. The first is the indirect sampling error caused by using a finite sample of residual vectors, which depends largely on the ratio of vector size to ...
Guannan Hu, Sarah L. Dance
wiley +1 more source
Mersenne primes, polygonal anomalies and string theory classification
, 1999 It is pointed out that the Mersenne primes M{sub p}=(2{sup p}{minus}1) and associated perfect numbers M{sub p}=2{sup p{minus}1}M{sub p} play a significant role in string theory; this observation may suggest a classification of consistent string theories.
Kephart, Thomas W.
core +1 more source
On the anti‐intercept features of noise radars
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1014-1035, July 2024.An evaluation of the related Low Probability of Detection, of Intercept and of Exploitation is presented for Continuous‐Emission Noise Radar waveforms with different operational parameters, that is, “tailored”, and with various “degrees of randomness”. The effect of “tailoring” is analysed with prospects for future work.
Gaspare Galati, Gabriele Pavan
wiley +1 more source