Results 21 to 30 of about 1,992,890 (281)

LAPLACIAN SPECTRUM AND ENERGY OF NON-COMMUTING GRAPHS OF FINITE RINGS [PDF]

Journal of Algebraic Systems
We compute spectrum, energy, Laplacian spectrum/ energy and signless Laplacian spectrum/energy of non-commuting graphs of certain finite non-commutative rings. In particular, we consider finite rings $R$ such that $|R| = p^2, p^3, p^4$, $p^5$, $p^2q$ and
Monalisha Sharma, Rajat Nath
doaj   +1 more source

When is R[x] a principal ideal ring?

Revista Integración, 2018
Because of its interesting applications in coding theory, cryptography, and algebraic combinatoris, in recent decades a lot of attention has been paid to the algebraic structure of the ring of polynomials R[x], where R is a finite commutative ring with ...
Henry Chimal-Dzul, C. A. López-Andrade
doaj   +1 more source

On the probability of zero divisor elements in group rings [PDF]

International Journal of Group Theory, 2022
Let $R$ be a non trivial finite commutative ring with identity and $G$ be a non trivial group‎. ‎We denote by $P(RG)$ the probability that the product of two randomly chosen elements of a finite group ring $RG$ is zero‎. ‎We show that $P(RG)
Haval Mohammed Salih
doaj   +1 more source

Tree-Ring Skeleton Plotting by Computer

, 1979
Skeleton plotting is an established manual technique for representing the relative narrowness of tree rings in a single radius. These plots can be used as a visual aid to crossdating.
Cropper, John Philip
core   +4 more sources

A Coefficient Ring for Finite Noncommutative Rings [PDF]

Proceedings of the American Mathematical Society, 1972
We prove that every finite p -ring R contains a unique (up to isomorphism) subring S such that
openaire   +2 more sources

Rings with finite decomposition of identity [PDF]

Ukrainian Mathematical Journal, 2011
A ring is called an FDI-ring if it has a decomposition of identity into a finite sum of pairwise orthogonal primitive idempotents. This notion generalizes right Artinian, right Noetherian, semiperfect and Goldie rings. The authors first present a survey of various finiteness conditions related to FDI-rings.
Dokuchaev, M.A., Gubareni, N.M., Kirichenko, V.V.   +2 more
openaire   +2 more sources

Refractive changes of a new asymmetric intracorneal ring segment with variable thickness and base width: A 2D finite-element model.

PLoS ONE, 2021
PurposeTo evaluate the local geometric effects of a unilateral intrastromal ring segment with a combined variation of ring thickness and base width in a finite element simulation, and to compare it against the isolated effect of thickness or base width ...
Gonzalo García de Oteyza, Juan Álvarez de Toledo, Rafael I Barraquer, Sabine Kling   +3 more
doaj   +1 more source

A note on noncommutative even square rings

Examples and Counterexamples, 2021
In this note we find the least order of a noncommutative even square ring and we note that it is a nil ring having characteristic four. In order to prove the main result given in this note we mainly use suitable examples.
S.K. Pandey
doaj   +1 more source

Structures, Ranks and Minimal Distances of Cyclic Codes over ${\mathbb{Z}}_{p^2}+u{\mathbb{Z}}_{p^2}$

Mathematics
Let p be a prime and Fp a finite field of order p. This paper investigates cyclic codes over the ring Rp2,u=Zp2+uZp2 of order p4, where the nilpotent element u satisfies u2=0 and pu≠0.
Sami H. Saif
doaj   +1 more source

Semi-Baer and Semi-Quasi Baer Properties of Skew Generalized Power Series Rings [PDF]

Assiut University Journal of Multidisciplinary Scientific Research
Let R be a ring with identity, (S,≤) an ordered monoid, ω:S→End(R) a monoid homomorphism, and A=R[[S,ω]] the ring of skew generalized power series. The concepts of semi-Baer and semi-quasi Baer rings were introduced by Waphare and Khairnar as extensions ...
Mostafa Hamam, Ramy Abdel-Khaleq, Refaat Salem   +2 more
doaj   +1 more source