Results 21 to 30 of about 180,719 (248)

Primary decomposition of torsion R[X]-modules

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
This paper is concerned with studying hereditary properties of primary decompositions of torsion R[X]-modules M which are torsion free as R-modules. Specifically, if an R[X]-submodule of M is pure as an R-submodule, then the primary decomposition of M ...
William A. Adkins
doaj   +1 more source

Some Combinatorial Results on the Factor Group K (G)

open access: yesJournal of Kufa for Mathematics and Computer, 2016
character matrix ( ) from the character table of and finding the invariant factors of this matrix, the primary decomposition of the factor group where is determined.
Manal Najy Yagoob, Ahmed Abed Ali Omran
doaj   +1 more source

Positive margins and primary decomposition [PDF]

open access: yesJournal of Commutative Algebra, 2014
We study random walks on contingency tables with fixed marginals, corresponding to a (log-linear) hierarchical model. If the set of allowed moves is not a Markov basis, then there exist tables with the same marginals that are not connected. We study linear conditions on the values of the marginals that ensure that all tables in a given fiber are ...
Kahle, Thomas   +2 more
openaire   +3 more sources

Primary decompositions [PDF]

open access: yesČasopis pro pěstování matematiky, 1989
Let L be a complete lattice, S a semigroup and u: \(S\times L\to L\) (write \(u(\alpha,a)=\alpha a)\) a mapping satisfying the conditions \(\alpha (\bigvee a_ i)=\bigvee (\alpha a_ i)\), \((\alpha \beta)a=\alpha (\beta a)\), \(\alpha\) \(a\leq a\). Then \((S,L,u)=_ SL\) is called a left S-lattice.
openaire   +2 more sources

Primary Thermal Decomposition Pathways of Hydroxycinnamaldehydes [PDF]

open access: yesEnergy & Fuels, 2021
Hydroxycinnamaldehyde monomers are important intermediates in the lignin biosynthesis and can be incorporated into plants in large quantities via genetic modification. They are also important products formed during the pyrolysis or combustion of lignocellulose.
Li, Liang   +4 more
openaire   +1 more source

Growth prediction of Microcystis aeruginosa based on a secondary decomposition integration model

open access: yesWater Science and Technology, 2023
Microcystis aeruginosa is the dominant species in the blooms of eutrophic lakes such as Taihu Lake in China. Chlorophyll-a is one of the most common indicators to characterize its biomass.
Juan Huan   +5 more
doaj   +1 more source

Changes in leaf litter decomposition of primary Korean pine forests after degradation succession into secondary broad‐leaved forests

open access: yesEcology and Evolution, 2021
Forest degradation succession often leads to changes in forest ecosystem functioning. Exactly how the decomposition of leaf litter is affected in a disturbed forest remains unknown.
Yan‐Mei Fu   +3 more
doaj   +1 more source

Solar radiation explains litter degradation along alpine elevation gradients better than other climatic or edaphic parameters

open access: yesFrontiers in Microbiology, 2023
Organic matter (OM) decomposition has been shown to vary across ecosystems, suggesting that variation in local ecological conditions influences this process.
Sarah Semeraro   +3 more
doaj   +1 more source

A New Approach to Primary Decomposition

open access: yesJournal of Symbolic Computation, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

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