Results 21 to 30 of about 427,861 (368)

A radical for right near-rings: The right Jacobson radical of type-0

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The notions of a right quasiregular element and right modular right ideal in a near-ring are initiated. Based on these J0r(R), the right Jacobson radical of type-0 of a near-ring R is introduced. It is obtained that J0r is a radical map and N(R)⊆J0r(R),
Ravi Srinivasa Rao, K. Siva Prasad
doaj   +1 more source

Radicals of rings and pullbacks

open access: yesJournal of Pure and Applied Algebra, 1994
AbstractGeneralizing various concrete radicals in associative rings like the nilradical, the Jacobson radical, and so on, A.G. Kurosh and S.A. Amitsur introduced an abstract notion of radical in the early 1950s. The basic notions of their general radical theory can be characterized by properties which are “almost” categorical – in the sense that they ...
László Márki, George Janelidze
openaire   +2 more sources

Reactivity of the Indenyl Radical (C9 H7 ) with Acetylene (C2 H2 ) and Vinylacetylene (C4 H4 ). [PDF]

open access: yes, 2019
The reactions of the indenyl radicals with acetylene (C2 H2 ) and vinylacetylene (C4 H4 ) is studied in a hot chemical reactor coupled to synchrotron based vacuum ultraviolet ionization mass spectrometry.
Ablikim, Utuq   +11 more
core   +2 more sources

On a problem of Bertram Yood

open access: yesTopological Algebra and its Applications, 2014
In 1964, Bertram Yood posed the following problem: whether the intersection of all closed maximal regular left ideals of a topological ring coincides with the intersection of all closed maximal regular right ideals of this ring.
Abel Mart, Abel Mati
doaj   +1 more source

Visible Light-driven Photocatalytic Synthesis of Medium-sized Lactams with Graphitic Carbon Nitride as Catalyst

open access: yesTaiyuan Ligong Daxue xuebao, 2022
Medium-sized ring lactams have been found as key structures in various bioactive molecules, and they are of vital importance in natural or pharmaceutical molecule synthesis.
Xin CUI   +3 more
doaj   +1 more source

Ni/Photoredox-Catalyzed C(sp3)-C(sp3) Coupling between Aziridines and Acetals as Alcohol-Derived Alkyl Radical Precursors.

open access: yesJournal of the American Chemical Society, 2022
Aziridines are readily available C(sp3) precursors that afford valuable β-functionalized amines upon ring opening. In this article, we report a Ni/photoredox methodology for C(sp3)-C(sp3) cross-coupling between aziridines and methyl/1°/2° aliphatic ...
Dong-Jun Sun, A. Doyle
semanticscholar   +1 more source

Submodule Categories of Wild Representation Type [PDF]

open access: yes, 2004
Let $\Lambda$ be a commutative local uniserial ring of length at least seven with radical factor ring $k$. We consider the category $S(\Lambda)$ of all possible embeddings of submodules of finitely generated $\Lambda$-modules and show that $S(\Lambda ...
Birkhoff   +3 more
core   +2 more sources

Radical Structures of Fuzzy Polynomial Ideals in a Ring

open access: yesDiscrete Dynamics in Nature and Society, 2016
We investigate the radical structure of a fuzzy polynomial ideal induced by a fuzzy ideal of a ring and study its properties. Given a fuzzy ideal β of R and a homomorphism f:R→R′, we show that if fx is the induced homomorphism of f, that is, fx(∑i=0naixi)
Hee Sik Kim, Chang Bum Kim, Keum Sook So
doaj   +1 more source

Atmospheric chemistry of gas-phase polycyclic aromatic hydrocarbons: formation of atmospheric mutagens. [PDF]

open access: yes, 1994
The atmospheric chemistry of the 2- to 4-ring polycyclic aromatic hydrocarbons (PAH), which exist mainly in the gas phase in the atmosphere, is discussed. The dominant loss process for the gas-phase PAH is by reaction with the hydroxyl radical, resulting
Atkinson R   +8 more
core   +3 more sources

On the left strongly prime modules and their radicals

open access: yesLietuvos Matematikos Rinkinys, 2010
We give the new results on the theory of the one-sided (left) strongly prime modules and their strongly prime radicals. Particularly, the conceptually new and short proof of the A.L.Rosenberg’s theorem about one-sided strongly prime radical of the ring ...
Algirdas Kaučikas
doaj   +1 more source

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