Results 41 to 50 of about 128,731 (304)

The Structure of Semiconic Idempotent Commutative Residuated Lattices

open access: yesMathematics
In this paper, we study semiconic idempotent commutative residuated lattices. After giving some properties of such residuated lattices, we obtain a structure theorem for semiconic idempotent commutative residuated lattices. As an application, we make use
Wei Chen
doaj   +1 more source

Subrings of I-rings and S-rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
Let R be a non-commutative associative ring with unity 1≠0, a left R-module is said to satisfy property (I) (resp. (S)) if every injective (resp. surjective) endomorphism of M is an automorphism of M.
Mamadou Sanghare
doaj   +1 more source

A note on a generalization of injective modules

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
As a proper generalization of injective modules in term of supplements, we say that a module $M$ has the property (ME) if, whenever $M\subseteq N$, $M$ has a supplement $K$ in $N$, where $K$ has a mutual supplement in $N$. In this study, we obtain that $(
B.N. Türkmen, E. Türkmen
doaj   +1 more source

Dual Lukacs regressions for non-commutative variables

open access: yes, 2013
Dual Lukacs type characterizations of random variables in free probability are studied here. First, we develop a freeness property satisfied by Lukacs type transformations of free-Poisson and free-Binomial non-commutative variables which are free. Second,
Szpojankowski, Kamil, Wesolowski, Jacek
core   +1 more source

Centrally Essential Rings and Semirings

open access: yesMathematics, 2022
This paper is a survey of results on centrally essential rings and semirings. A ring (respectively, semiring) is said to be centrally essential if it is either commutative or satisfies the property that for any non-central element a, there exist non-zero
Askar Tuganbaev
doaj   +1 more source

Physical Intelligence in Small‐Scale Robots and Machines

open access: yesAdvanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

On adequacy of full matrices

open access: yesМатематичні Студії, 2023
This paper deals with the following question: whether a ring of matrices or classes of matrices over an adequate ring or elementary divisor ring inherits the property of adequacy?
A. I. Gatalevych, V. P. Shchedryk
doaj   +1 more source

$q$-Gaussian processes: non-commutative and classical aspects

open access: yes, 1995
We examine, for ...
Bozejko, Marek   +2 more
core   +3 more sources

Redrawing the Mannich‐Type Reaction through Carbonyl Umpolung Reactivity

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
GA: Herein, a conceptually novel one‐pot multicomponent strategy is reported for the streamlined construction of five‐membered imidazolidines from 1,2‐diaza‐1,3‐dienes (onefold), amines (twofold), and formaldehyde (twofold). This redesigned Mannich‐type reaction that exploits a carbene‐like activity of 1,2‐diaza‐1,3‐dienes (realized by “umpolung ...
Vittorio Ciccone   +4 more
wiley   +1 more source

A modified D numbers methodology for environmental impact assessment

open access: yesTechnological and Economic Development of Economy, 2018
Environmental impact assessment (EIA) is usually evaluated by many factors influenced by various kinds of uncertainty or fuzziness. As a result, the key issues of EIA problem are to rep­resent and deal with the uncertain or fuzzy information.
Ningkui Wang, Daijun Wei
doaj   +1 more source

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