Results 31 to 40 of about 810 (91)
Medium nil *-clean rings [PDF]
, 2022 A *-ring R is called a medium *-clean ring if every element in R is the sum or difference of a nilpotent with a projection that commute. Fundamenta properties of such *-rings are obtained.
ZHANG Xixi; WU Jun
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On partial skew Armendariz rings [PDF]
, 2011 In this paper we consider rings R with a partial action α of an infinite cyclic group G on R. We introduce the concept of partial skew Armendariz rings and partial α-rigid rings. We show that partial α-rigid rings are partial skew Armendariz rings and
Cortes, W.
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Nutrient Peak Shifts in the Arctic: Implications for Migratory Herbivores Under Climate Change
Journal of Biogeography, Volume 53, Issue 2, February 2026.ABSTRACT Aim Quantifying how the timing and spatial variability of Arctic vegetation nutrient peaks are projected to shift under climate change, and assessing potential consequences for migratory herbivores that rely on seasonal synchrony with peak plant quality. Location Circumpolar Arctic, with emphasis on tundra regions.
Nomikos Skyllas +4 more
wiley +1 more source
Space Weather, Volume 23, Issue 11, November 2025.Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera +14 more
wiley +1 more source
Response of Subalpine Vegetation to Snow Cover Duration Quantified by In Situ Repeat Photography
Journal of Vegetation Science, Volume 36, Issue 1, January/February 2025.ABSTRACT Aims Snow plays a crucial role in the distribution of alpine plant species and the dynamics of alpine communities. However, we have only a limited understanding of the snow cover's impact on vegetation in middle‐height mountains at a meso‐topographic scale close to the treeline. Location The High Sudetes Mts., Czech Republic.
Miroslav Zeidler +3 more
wiley +1 more source
Note on strongly nil clean elements in rings [PDF]
, 2019 summary:Let $R$ be an associative unital ring and let $a\in R$ be a strongly nil clean element. We introduce a new idea for examining the properties of these elements. This approach allows us to generalize some results on nil clean and strongly nil clean
Pucanović, Zoran S. +4 more
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Cell Death Mechanisms Produced by Carbon‐Based Nanoparticles
Journal of Nanotechnology, Volume 2025, Issue 1, 2025.Using carbon‐based nanoparticles, such as diamond, graphite, fullerene, and nanotubes, has increased their research as possible strategies for drug delivery to control diseases, especially cancer. However, because these materials, when interacting with the living environment, release substances that are capable of inducing cell death by themselves, it ...
Santos-Adriana Martel-Estrada +7 more
wiley +1 more source
Rings in Which Element is a Sum of the Transformation Elements of Idempotents and Special Elements
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this article, further generalizations are made for the nil clean ring and the ur‐clean ring, obtained as extensions of the clean ring. Firstly, consider rings where each element can be expressed as n idempotents plus one nilpotent, any two commute under multiplication.
Xinsong Yang, Jiaxin Liu, Pramita Mishra
wiley +1 more source
TRIANGULAR MATRIX REPRESENTATIONS OF SKEW MONOID RINGS [PDF]
, 2010 Let R be a ring and S a u.p.-monoid. Assume that there is a monoid homomorphism α : S → Aut (R). Suppose that α is weakly rigid and lR(Ra) is pure as a left ideal of R for every element a ∈ R.
Zhongkui, Liu, Xiaoyan, Yang
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Antitrust rules and remedies against platforms' treacherous turns
European Law Journal, Volume 30, Issue 4, Page 629-652, December 2024.Abstract Digital platforms can take a ‘treacherous turn’, where they initially set advantageous terms and conditions only to reverse them once demand has become sticky. Transaction costs economics has long recognised the harm caused by such opportunism, especially in the presence of relation‐specific investments.
Friso Bostoen, Nicolas Petit
wiley +1 more source