Characterize rings

It is shown that: (1) Let R be a simple right Noetherian ring, then the following conditions are equivalent: (i) R is a right SI ring; (ii) Every cyclic singular right R  module is pseudo  injective. (2) Let R be a right artinian ring such that every finite generated right R  module is a direct sum of a projective module and a pseudo  injective module. Then: (i) R/Soc(RR ) is a semisimple artinian ring; (ii) J (R) ⊂ Soc(RR ); (iii) J 2 (R) = 0. (3) Let R be a ring with condition (∗ ),...
5p tuanlocmuido 19122012 32 2 Download

An element a of an associative ring R is said to be quasinilpotent if 1 − ax is invertible for every x ∈ R with xa = ax. Nilpotents and elements in the Jacobson radical of a ring are wellknown examples of quasinilpotents. In this paper, properties and examples of quasinilpotents in a ring are provided, and the set of quasinilpotents is applied to characterize rings with some certain properties.
9p nutifooddau 21012019 4 0 Download

The goal of this work is to give a precise numerical description of the K¨hler cone of a compact K¨hler manifold. Our main result states that the a a K¨hler cone depends only on the intersection form of the cohomology ring, the a Hodge structure and the homology classes of analytic cycles: if X is a compact K¨hler manifold, the K¨hler cone K of X is one of the connected components of a a the set P of real (1, 1)cohomology classes {α} which are numerically positive on analytic cycles, i.e. Y αp 0 for every irreducible analytic...
29p tuanloccuoi 04012013 41 5 Download

The liquid benzoxazine monomer was characterized by 1 HNMR and FTIR spectroscopy. Curing characteristics at different temperatures were studied and monitored by differential scanning calorimeter (DSC). The appearance of two exothermic peaks associated with reaction of double bonds of the aliphatic side–chain and ring opening polymerization of benzoxazine. High thermal stability of the polymer sample was confirmed by thermogravimetric analysis (TGA).
9p cumeo3000 01082018 10 0 Download

Let (R, m) be a noetherian local ring and M a finitely generated Rmodule. In this paper, we study the number of elements in a minimal system of generators of the homogeneous ideal in the idealization ring RnM. As immediate consequences, we presented a characterization for RnM being a regular local ring and homogeneous ideals of RnM being parameters ideals.
5p tonymina21 05122018 14 0 Download

In this paper, cyclic c−injective modules are introduced and investigated. It is shown that a commutative Noetherian domain is Dedekind if and only if every simple module is cyclic c−injective. Finally, it is shown that injectivity, principal injectivity, mininjectivity, and simple injectivity are all equal to characterize right Vrings, right GVrings, right pVrings, and WVrings.
10p danhdanh27 07012019 4 0 Download

In this paper, we first give some characterizations of esymmetric rings. We prove that R is an esymmetric ring if and only if a1a2a3 = 0 implies that aσ(1)aσ(2)aσ(3)e = 0, where σ is any transformation of {1, 2, 3}. With the help of the Bott–Duffin inverse.
11p nutifooddau 21012019 6 0 Download

Let R be a ring and a, b, c ∈ R. We give a novel characterization of group inverses (resp. EP elements) by the properties of right (resp. left ) c regular inverses of a and discuss the relation among the strongly left (b, c)invertibility of a, the right caregularity of b , and the (b, c)invertibility of a.
12p nutifooddau 21012019 4 0 Download

In this paper, I will deal with dualband electrically small antenna (ESA). The miniaturized radiation structure consists of a small ring and concentric splitring resonator. The resonant response of the proposed radiation structure is characterized by the coupling among two splitring resonators and the small ring. This interaction provides an additional capacitance to further reduce the total dimension of the resonant electrical length.
8p byphasse043256 24032019 7 0 Download

This work employs ANSYS fluent CFD tool to calculate thrust generated a rotor covered by a ring surface using in UAV. The aim of this paper is to characterize the effects of geometry parameters of the ring surface such as diameter and height on the thrust of the rotor.
6p visasuke2711 25042019 8 0 Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Ring chromosome 13 syndrome characterized by high resolution array based comparative genomic hybridization in patient with 47, XYY syndrome: a case report...
4p thulanh26 08122011 41 2 Download

As a solution to the problems encountered with DIRECT, Gamma employs what appear today to be relatively straightforward solutions. Architecturally, Gamma is based on a sharednothing [STON86] architecture consisting of a number of processors interconnected by a communications network such as a hypercube or a ring, with disks directly connected to the individual processors. It is generally accepted that such architectures can be scaled to incorporate 1000s of processors.
160p nhacsihuytuan 13042013 33 2 Download

A bacterial strain that grew on 4amino3hydroxybenzoic acidwas isolated fromfarmsoil. The isolate, strain 10d, was identified as a species of Bordetella.CellextractsofBordetellasp. strain10dgrownon4amino3hydroxybenzoicacid containedanenzyme that cleaved this substrate.The enzyme was purified to homogeneity with a 110fold increase in specific activity. The purified enzyme was characterized as a metacleavage dioxygenase that catalyzed the ring fission betweenC2 andC3 of 4amino3hydroxybenzoic acid, with the consumption of 1 mol of O2per mol of substrate....
7p tumor12 22042013 30 2 Download

In this paper we characterize Qmodules and almost Qmodules. Next we estblish some equivalent conditions for an almost Qmodule to be a Qmodule. Using these results, some characterizations are given for Noetherian Qmodules.
11p danhdanh27 07012019 12 1 Download

This notion is a generalization of left p.p. rings in the general module theoretic setting. The aim of this article is to investigate these modules. Some characterizations and properties are given. As applications, the connections among Baer rings, p.p. rings and von Neumann regular rings are studied.
10p tuongvidanh 06012019 13 0 Download

Here we study the graded weakly prime ideals of a Ggraded commutative ring. A number of results concerning graded weakly prime ideals are given. For example, we give some characterizations of graded weakly prime ideals and their homogeneous components.
8p danhdanh27 07012019 6 0 Download

In this paper, we study some of the properties of grmultiplication ideals in a graded ring R. We first characterize finitely generated grmultiplication ideals and then give a characterization of grmultiplication ideals by using the grlocalization of R. Finally we determine the set of grP primary ideals of R when P is a grmultiplication grprime ideal of R.
9p danhdanh27 07012019 7 0 Download

We investigate when different graphs associated to commutative rings are chordal. In particular, we characterize commutative rings R with each of the following conditions: The total graph of R is chordal, the total dot product or the zerodivisor dot product graph of R is chordal, the comaximal graph of R is chordal, R is semilocal and the unit graph or the Jacobson graph of R is chordal.
12p nutifooddau 21012019 7 0 Download

In this paper, we created two new photonic crystal fiber structures with a silica substrate and the cladding consists of 8 rings of air holes arranged in a regular hexagonal lattice with hollow core infiltrated Nitrobenzene and Toluene.
6p vicolor2711 17072019 5 0 Download

This book comprises the contributions of several authors in the area of polymer characterization by atomic force microscopy of the polymer network structure formed in Ferroelectric Liquid Crystals Cells; polymerization by microwave irradiation method of starch/acrylic acid/acrylamide; polymerization of olefins; emulsion polymerization; ring opening polymerization; cationic polymerization of vinyl monomers ; block and graft copolymerization by controlled/living polymerization; fabrication of doped microstructures by twophoton polymerization; rheology of biomaterials; plant cell wall ...
436p greengrass304 18092012 145 38 Download