Results 21 to 30 of about 21,220 (243)

Turán and Ramsey problems for alternating multilinear maps

open access: yesDiscrete Analysis, 2023
Turán and Ramsey problems for alternating multilinear maps, Discrete Analysis 2023:12, 22 pp. Ramsey's theorem (in its finite version) states that for every positive integer $k$ there exists a positive integer $n$ such that every graph with $n$ vertices
Youming Qiao
doaj   +1 more source

The prime graph conjecture for integral group rings of some alternatings groups [PDF]

open access: yesInternational Journal of Group Theory, 2013
We investigate the classical Zassenhaus Conjecture (ZC) for integral group rings of alternating groups A9 and A10. Even the question (ZC) remains open as no counterexample is known up to date, it been confirmed for special types of groups such as ...
Mohamed Salim
doaj  

Crystal structure of 2,5-dimethylanilinium hydrogen maleate

open access: yesActa Crystallographica Section E, 2014
The crystal structure of the title salt, C8H12N+·C4H3O4−, consists of a 2,5-dimethylanilinium cation and an hydrogen maleate anion. In the anion, a strong intramolecular O—H...O hydrogen bond is observed, leading to an S(7) graph-set motif.
Maha Mathlouthi   +3 more
doaj   +1 more source

ADMM–Net: A Deep Learning Approach for Parameter Estimation of Chirp Signals Under Sub-Nyquist Sampling

open access: yesIEEE Access, 2020
Parameter estimation of chirp signals plays an important role in the field of radar countermeasures. Compressed sensing (CS) based sub-Nyquist sampling and parameter estimation methods alleviates the pressure on hardware systems to acquire and process ...
Hanning Su, Qinglong Bao, Zengping Chen
doaj   +1 more source

A New Algorithm for Learning Large Bayesian Network Structure From Discrete Data

open access: yesIEEE Access, 2019
Learning the structure of Bayesian networks (BNs) from high dimensional discrete data is common nowadays but a challenging task, due to the large parameter space, the acyclicity constraint placed on the graphical structures and the difficulty in ...
Weiping Zhang   +3 more
doaj   +1 more source

OD-characterization of alternating groups Ap+d

open access: yesOpen Mathematics, 2017
Let An be an alternating group of degree n. Some authors have proved that A10, A147 and A189 cannot be OD-characterizable. On the other hand, others have shown that A16, A23+4, and A23+5 are OD-characterizable.
Yang Yong, Liu Shitian, Zhang Zhanghua
doaj   +1 more source

The automorphism group of the alternating group graph

open access: yesApplied Mathematics Letters, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Hybrid Filter Based on Fuzzy Techniques for Mixed Noise Reduction in Color Images

open access: yesApplied Sciences, 2019
To decrease contamination from a mixed combination of impulse and Gaussian noise on color digital images, a novel hybrid filter is proposed. The new technique is composed of two stages.
Josep Arnal, Luis Súcar
doaj   +1 more source

Tetravalent Graphs Admitting Half-Transitive Group Actions: Alternating Cycles

open access: yesJournal of Combinatorial Theory, Series B, 1999
A graph \(X\) is said to be \((G,1/2)\)-transitive if the group \(G\) acts transitively on the vertices and edges, but not on the arcs of \(X\). The authors investigate finite, connected, 4-valent graphs \(X\) which are \((G,1/2)\)-transitive. It is proved that these graphs are covers of such graphs which have one of three attachment properties ...
Marušič, Dragan, Praeger, Cheryl E
openaire   +2 more sources

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

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