Results 71 to 80 of about 46,949 (225)
Translatability and translatable semigroups
Open Mathematics, 2018 The concept of a k-translatable groupoid is explored in depth. Some properties of idempotent k-translatable groupoids, left cancellative k-translatable groupoids and left unitary k-translatablegroupoids are proved. Necessary and sufficient conditions are
Dudek Wieslaw A., Monzo Robert A. R.
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Graph‐Based Spectrum Sensing via Quadratic Form of Adjacency Matrix
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This graphical abstract presents a graph‐signal‐processing‐based spectrum sensing algorithm for robust primary user detection at low signal‐to‐noise ratios (SNR). The observed signal is preprocessed via power spectrum calculation and block summation, and then transformed into a graph.
Yan Gao, Guobing Hu, Yunfei Chen
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THE TRIPLE IDEMPOTENT GRAPH OF THE RING Z_n
BarekengLet be a commutative ring, and denote the set of all idempotent elements of . The triple idempotent graph of , denoted by , is defined as an undirected simple graph whose vertex set .
Vika Yugi Kurniawan +2 more
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The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.This paper investigates the attitude maneuver control without unwinding phenomenon for rigid spacecraft using a multivariable super‐twisting algorithm (MVSTA). ABSTRACT This paper investigates the attitude maneuver control without unwinding phenomenon for rigid spacecraft using a multivariable super‐twisting algorithm (MVSTA).
Yunzhe Su +4 more
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A Logratio Approach to the Analysis of Autosomal Genotype Frequencies Across Multiple Samples
Molecular Ecology Resources, Volume 26, Issue 1, January 2026.ABSTRACT More than 25 years ago, Aitchison showed that the logratio principal component analysis of multiple samples of a biallelic polymorphism can evidentiate the Hardy–Weinberg law. However, hitherto compositional data analysis, that is, the logratio approach, has had little impact in population genetics.
Jan Graffelman
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Decomposition of Idempotent Operators on Hilbert C*-Modules
MathematicsThis study advances the application of the generalized Halmos’ two projections theorem to idempotent operators on Hilbert C*-modules through a comprehensive study of sums involving adjointable idempotents and their adjoints.
Wei Luo
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Free idempotent generated semigroups: The word problem and structure via\n gain graphs [PDF]
, 2020 Igor Dolinka
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The Annals of Mathematical Statistics, 1966 The author introduces a lemma to prove rather special theorems on the independence of quadratic forms.
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Radical preservation and the finitistic dimension
Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.Abstract We introduce the notion of radical preservation and prove that a radical‐preserving homomorphism of left artinian rings of finite projective dimension with superfluous kernel reflects the finiteness of the little finitistic, big finitistic, and global dimension.
Odysseas Giatagantzidis
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