Results 61 to 70 of about 611,831 (181)

Local Cohomology Modules and Relative Cohen-Macaulayness

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
Let (R, 𝔪) denote a commutative Noetherian local ring and let M be a finite R-module. In this paper, we study relative Cohen-Macaulay rings with respect to a proper ideal 𝔞 of R and give some results on such rings in relation with Artinianness, Non ...
Zohouri M. Mast
doaj   +1 more source

Missing Rings, Synchronous Growth, and Ecological Disturbance in a 36-Year Pitch Pine (Pinus rigida) Provenance Study.

open access: yesPLoS ONE, 2016
Provenance studies are an increasingly important analog for understanding how trees adapted to particular climatic conditions might respond to climate change. Dendrochronological analysis can illuminate differences among trees from different seed sources
Caroline Leland   +8 more
doaj   +1 more source

On Generalized Regular Local Ring

open access: yesScience Journal of University of Zakho, 2015
A ring R is called a generalized Von Neumann regular local ring (GVNL-ring) if for any a∈R, either a or (1-a) is π-regular element. In this paper, we give some characterization and properties of generalized regular local rings.
Zubayda M. Ibraheem, Naeema A. Shereef
doaj  

Coefficient subrings of certain local rings with prime-power characteristic

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
If R is a local ring whose radical J(R) is nilpotent and R/J(R) is a commutative field which is algebraic over GF(p), then R has at least one subring S such that S=∪i=1∞Si, where each Si, is isomorphic to a Galois ring and S/J(S) is naturally isomorphic ...
Takao Sumiyama
doaj   +1 more source

A survey of s-unital and locally unital rings

open access: yesRevista Integración, 2019
We gather some classical results and examples that show strict inclusion between the families of unital rings, rings with enough idempotents, rings with sets of local units, locally unital rings, s-unital rings and idempotent rings.
Patrik Nystedt
doaj  

Multiscale structural analysis of defective graphene in transmission electron microscopy images using persistent homology [PDF]

open access: yesAPL Materials
We developed a persistent-homology-based strategy that converts transmission electron microscopy images of defective graphene into quantitative, multiscale descriptors spanning local carbon-atom polygons and their global connectivity.
Ryuto Eguchi, Ayako Hashimoto
doaj   +1 more source

Strongly clean matrix rings over local rings

open access: yesJournal of Algebra, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Flat local morphisms of rings with prescribed depth and dimension

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
For any pairs of integers (n,m) and (d, e) such that 0 ≤ n ≤ m, 0 ≤ d _ e, d ≤ n, e ≤ m and n -d ≤ m - e we construct a local flat ring morphism of noetherian local rings u : A → B such that dim(A) = n; depth(A) = d; dim(B) = m and depth(B) = e.
Ionescu Cristodor
doaj   +1 more source

Characterization of rings with planar, toroidal or projective planar prime ideal sum graphs

open access: yesAKCE International Journal of Graphs and Combinatorics
Let R be a commutative ring with unity. The prime ideal sum graph [Formula: see text] of the ring R is the simple undirected graph whose vertex set is the set of all nonzero proper ideals of R and two distinct vertices I and J are adjacent if and only if
Praveen Mathil   +3 more
doaj   +1 more source

A class of zero divisor rings in which every graph is precisely the union of a complete graph and a complete bipartite graph

open access: yesOpen Mathematics, 2015
Recently, an interest is developed in estimating genus of the zero-divisor graph of a ring. In this note we investigate genera of graphs of a class of zero-divisor rings (a ring in which every element is a zero divisor).
Nauman Syed Khalid, Shafee Basmah H.
doaj   +1 more source

Home - About - Disclaimer - Privacy