Results 1 to 10 of about 76,564 (167)
Krull-Schmidt categories and projective covers [PDF]
Expositiones Mathematicae, 2014 Krull-Schmidt categories are additive categories such that each object decomposes into a finite direct sum of indecomposable objects having local endomorphism rings.
Atiyah +9 more
core +2 more sources
Projective covers and minimal free resolutions [PDF]
International Journal of Mathematics and Mathematical Sciences, 1996 Using a generalization of the definition of the projective cover of a module, a special type of surjective free resolution, known as the projective cover of a complex, may be defined.
Mark A. Goddard
doaj +2 more sources
Projective Covers of Flat Contramodules [PDF]
International Mathematics Research Notices, 2021 Abstract We show that a direct limit of projective contramodules (over a right linear topological ring) is projective if it has a projective cover. A similar result is obtained for $\infty $-strictly flat contramodules of projective dimension not exceeding $1$, using an argument based on the notion of the topological Jacobson radical ...
Bazzoni, S. +2 more
openaire +3 more sources
Pasture phytocomplexes of Pridonye: Ecological situation [PDF]
E3S Web of Conferences, 2023 The purpose of the work is to establish the ecological situation in the pasture phytocomplexes of the Don basin. The objects of research were plant communities on floodplain sod-meadow granular soils and on the sands of the Ilovlinsky massif of the ...
Vlasenko Marina
doaj +1 more source
A note on Lang's conjecture for quotients of bounded domains [PDF]
Épijournal de Géométrie Algébrique, 2021 It was conjectured by Lang that a complex projective manifold is Kobayashi hyperbolic if and only if it is of general type together with all of its subvarieties.
Sébastien Boucksom, Simone Diverio
doaj +1 more source
Известия ТИНРО, 2022 Experiments on comparing the methods for assessment of Saccharina japonica commercial stock were conducted in 2021. In total, 11 sites in the northwestern Tatar Strait southward from the Sovetskaya Gavan Bay, along the 44 km stretch of coastline between ...
A. A. Dulenin +2 more
doaj +1 more source
Projective Covering Designs [PDF]
Bulletin of the London Mathematical Society, 1993 A \((2,k,v)\) covering design is a pair \((X,{\mathcal F})\) such that \(X\) is a \(v\)-element set and \({\mathcal F}\) is a family of \(k\)-element subsets, called blocks, of \(X\) with the property that every pair of distinct elements of \(X\) is contained in at least one block.
Chee, Yeow Meng, Ling, San
openaire +3 more sources
Бюллетень Почвенного института им. В.В. Докучаева, 2022 The key feature of the no-till technology is the preservation of crop residues on the soil surface. Crop residues quantitative assessment is an important task when introducing technology into production.
N. R. Ermolaev +4 more
doaj +1 more source
The structure of living ground cover under the various tree species canopy in the arboretum of V. N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences [PDF]
Сибирский лесной журнал, 2023 The living ground cover species composition under the various tree species canopy in the Arboretum of V. N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, in the city of Krasnoyarsk was studied.
I. A. Goncharova, M. A. Kirienko
doaj +1 more source
Известия ТИНРО, 2020 A simple and cost-effective method for macrophyte stock assessment as visual survey, was tested. It demonstrated good efficiency for counting of Saccharina japonica. The method is based on visual evaluation of SAV projective cover.
A. A. Dulenin
doaj +1 more source