Results 1 to 10 of about 13,046,149 (172)
On invariant ideals in group rings of torsion-free minimax nilpotent groups
Researches in Mathematics, 2023 Let $k$ be a field and let $N$ be a nilpotent minimax torsion-free group acted by a solvable group of operators $G$ of finite rank. In the presented paper we study properties of some types of $G$-invariant ideals of the group ring $kN$.
A.V. Tushev
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EURASIP Journal on Advances in Signal Processing, 2010 A double-loop iterative method is proposed to design allpass variable fractional-delay (VFD) digital filters basing on the minimization of root-mean-squared group-delay error. In the inner loop, an iterative quadratic optimization is proposed to replace
Cheng-Han Chan +2 more
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On invariant ideals in crossed products of torsion-free minimax nilpotent groups
Researches in MathematicsLet $R$ be a finitely generated commutative domain and let $N$ be a nilpotent minimax torsion-free group acted by a solvable group of operators $G$ of finite rank.
A.V. Tushev
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Image Analysis and StereologyThe acquisition and transmission of magnetic resonance images are susceptible to noise, particularly impulse noise. Although the method based on the ℓ0-norm and overlapping group sparse total variation (ℓ0-OGSTV) is effective for impulse noise image ...
Wei Xue +4 more
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Statistical approaches for service delivery differentials as assessed through a composite indicator: Application to Ugandan local governments. [PDF]
PLoS ONEThis study assesses differentials in service delivery among Ugandan local governments through a composite indicator that consolidates essential performance data from the education, health, and water sectors.
Hillary Muhanguzi +3 more
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Optimal futility stopping boundaries for binary endpoints [PDF]
BMC Medical Research MethodologyBackground Group sequential designs incorporating the option to stop for futility at the time point of an interim analysis can save time and resources.
Michaela Maria Freitag +2 more
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Machine learning prediction of the unconfined compressive strength of controlled low strength material using fly ash and pond ash [PDF]
Scientific ReportsThe sustainable use of industrial byproducts in civil engineering is a global priority, especially in reducing the environmental impact of waste materials.
K. Lini Dev +2 more
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Groups with the real chain condition on non-pronormal subgroups [PDF]
International Journal of Group Theory, 2023 It is shown that a generalised radical group has no chain of non-pronormal subgroups with the same order type as the set $\mathbb{R}$ of the real numbers if and only if either the group is minimax or all subgroups are pronormal.
Ulderico Dardano, Fausto De Mari
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On groups with many normal subgroups [PDF]
International Journal of Group Theory, 2023 The structure of groups which are rich in normal subgroups has been investigated by several authors. Here, we prove that if a radical group G has normal deviation, which means that the set of its non-normal subgroups satisfies a very weak chain condition,
Alessio Russo, Mario Viscusi
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Minimax Demographic Group Fairness in Federated Learning [PDF]
Conference on Fairness, Accountability and Transparency, 2022 Federated learning is an increasingly popular paradigm that enables a large number of entities to collaboratively learn better models. In this work, we study minimax group fairness in federated learning scenarios where different participating entities ...
Afroditi Papadaki +4 more
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