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Covering techniques in Auslander–Reiten theory
(Elsevier Science, 2019-01)
Given a finite dimensional algebra over a perfect field the text introduces covering functors over the mesh category of any modulated Auslander–Reiten component of the algebra. This is applied to study the composition of ...
The covering type of closed surfaces and minimal triangulations
(Academic Press Inc Elsevier Science, 2019-08)
The notion of covering type was recently introduced by Karoubi and Weibel to measure the complexity of a topological space by means of good coverings. When X has the homotopy type of a finite CW-complex, its covering type ...
Combining cover crops and low nitrogen fertilization improves soil supporting functions
(2019-07)
Background and aims: Cover crops may restore soil functions lost with single summer crop sequences enhancing soil organic carbon and nitrogen (SOC and SON) stocks. We investigated the effect of cover crops and low nitrogen ...
Vertex adjacencies in the set covering polyhedron
(Elsevier Science, 2017-02)
We describe the adjacency of vertices of the (unbounded version of the) set covering polyhedron, in a similar way to the description given by Chvátal for the stable set polytope. We find a sufficient condition for adjacency, ...
Covering functors without groups
(Academic Press Inc Elsevier Science, 2009-06)
Coverings in the representation theory of algebras were introduced for the Auslander-Reiten quiver of a representation-finite algebra in [Ch. Riedtmann, Algebren, Darstellungsköcher, Überlagerungen und zurüch, Comment. ...
An enumerative procedure for identifying maximal coversAn enumerative procedure for identifying maximal covers
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2003)
Soil coverage evolution and wind erosion risk on summer crops under contrasting tillage systems
(Elsevier, 2015-03)
The effectiveness of wind erosion control by soil surface conditions and crop and weed canopy has been well studied in wind tunnel experiments. The aim of this study is to assess the combined effects of these variables ...
Temporally-Consistent Annual Land Cover from Landsat Time Series in the Southern Cone of South America
(MDPI, 2022-08)
The impact of land cover change across the planet continues to necessitate accurate methods to detect and monitor evolving processes from satellite imagery. In this context, regional and global land cover mapping over time ...
Effect of different cover crops on C and N cycling in sorghum NT systems
(2016)
In many no-till (NT) systems, residue input is low and fallow periods excessive, for which reasons soil degradation occurs. Cover crops could improve organic matter, biological activity, and soil structure. In order to ...