Results 31 to 40 of about 187,447 (246)

Matrix Diophantine equations over quadratic rings and their solutions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
The method for solving the matrix Diophantine equations over quadratic rings is developed. On the basic of the standard form of matrices over quadratic rings with respect to $(z,k)$-equivalence previously established by the authors, the matrix ...
N.B. Ladzoryshyn   +2 more
doaj   +1 more source

On annihilator graph of a finite commutative ring [PDF]

open access: yesTransactions on Combinatorics, 2017
‎The annihilator graph $AG(R)$ of a commutative ring $R$ is a simple undirected graph with the vertex set $Z(R)^*$ and two distinct vertices are adjacent if and only if $ann(x) cup ann(y)$ $ neq $ $ann(xy)$‎.
Sanghita Dutta, Chanlemki Lanong
doaj   +1 more source

Analysis and Evaluation of Strengthening Effect of Inflatable Rings on Soft Stratospheric Airship

open access: yesTaiyuan Ligong Daxue xuebao, 2023
Purposes The research on advanced stratospheric airships in China is mainly at the conceptual design stage, lacking specific mechanical performance evaluation to promote their development.
Tiane LI   +4 more
doaj   +1 more source

Multiplicative Structure and Hecke Rings of Generator Matrices for Codes over Quotient Rings of Euclidean Domains

open access: yesMathematics, 2017
In this study, we consider codes over Euclidean domains modulo their ideals. In the first half of the study, we deal with arbitrary Euclidean domains.
Hajime Matsui
doaj   +1 more source

Reduced load approximation for WDM rings with wavelength continuity constraint [PDF]

open access: yes, 2015
A reduced load approximation for WDM rings with a wavelength continuity constraint under Poissonian, homogeneous traffic with any spatial profile is presented. The model accounts for interactions among successive links in a linear network, correcting the
Waldman, H, Almeida, RC, Campelo, DR
core   +1 more source

Reduced and irreducible simple algebraic extensions of commutative rings [PDF]

open access: yesMathematica Moravica, 2017
Let A be a commutative ring with identity and be an algebraic element over A. We give necessary and sufficient conditions under which the simple algebraic extension A[α] is without nilpotent or without idempotent elements.
Mihovski S.V.
doaj  

Anillos separables, de baer y pp-anillos

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
Keimel introduced the notion of proyectability in the class of lattice-ordered rings and f-rings in [5]. Here we introduce a similar notion forgeting the lattice and ordered structure of the ring and interpretating the orthogonality within the ...
Jorge I. Guier
doaj   +1 more source

Rings Over Which Certain Modules Are YJ-Injective [PDF]

open access: yesKirkuk Journal of Science, 2009
In this paper we continue to study the concept of YJ-injectivity which was first introduced by Ming in 1985. Furthermore, we give some characterizations and properties for it.
Abdullah M. Abdul-Jabbar
doaj   +1 more source

Extremal behavior of reduced type of one dimensional rings [PDF]

open access: yes, 2023
Let $R$ be a domain that is a complete local $\mathbb{k}$ algebra in dimension one. In an effort to address the Berger's conjecture, a crucial invariant reduced type $s(R)$ was introduced by Huneke et. al. In this article, we study this invariant and its
Maitra, Sarasij, Mukundan, Vivek
core   +1 more source

Assessing soil microbes that drive fairy ring patterns in temperate semiarid grasslands

open access: yesBMC Ecology and Evolution, 2022
Background Fairy rings occur in diverse global biomes; however, there is a critical knowledge gap regarding drivers of fairy rings in grassland ecosystems. Grassland fairy rings are characterized belowground by an expanding mycelial front and aboveground
Jiahuan Li   +7 more
doaj   +1 more source

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