Results 81 to 90 of about 285 (185)

Derivation Pairs on Rings and RNGs

open access: yesAnnales Mathematicae Silesianae
We generalize a classical result about derivation pairs on function algebras. Specifically, we describe the forms of derivation pairs on rings and rngs (non-unital rings) which are not assumed to be commutative.
Ebanks Bruce
doaj   +1 more source

Recent results on weakly factorial domains

open access: yesITM Web of Conferences, 2018
In this paper, we will survey recent results on weakly factorial domains base on the results of [11, 13, 14]. LetD be an integral domain, X be an indeterminate over D, d ∈ D, R = D[X,d/X] $P_{\textrm{rad}} \propto P_{\textrm{sw}}^{1.2}$ D[X,dX] be a ...
Gyu Whan Chang
doaj   +1 more source

Semigroup Commutators under Differences

open access: yesRevista Matemática Iberoamericana, 1992
One considers on a domain \(\Omega\) in \(\mathbb{R}^ n\) a self-adjoint second order subelliptic operator with positive characteristic. It can be written \[ Lf= h^{-1} \sum_{i,j} \partial_ i a_{ij} \partial_ j\cdot hf \] with \(h\), \(h^{-1}\), \(a_{ij}\in C^ \infty\) and real, and with the matrix \((a_{ij})\) non-negative.
openaire   +2 more sources

On the Presentation and Cayley Graph of the Bruck–Reilly Idealization Semigroup

open access: yesJournal of Mathematics
Transferring constructions between different algebraic structures often reveals deep connections and enables the application of techniques from one theory to another.
Suha Wazzan   +2 more
doaj   +1 more source

On multiplicative bases in commutative semigroups

open access: yesEuropean Journal of Combinatorics, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

On conditionally commutative semigroups

open access: yesSemigroup Forum, 1981
CHERUBINI, ALESSANDRA, VARISCO, ADA
openaire   +2 more sources

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