Results 71 to 80 of about 1,615 (200)

Rational points on even‐dimensional Fermat cubics

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley   +1 more source

On the automorphisms of the power semigroups of a numerical semigroup

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract If H$H$ is a numerical semigroup (i.e., a cofinite subset of the non‐negative integers closed under addition), then the collection of all non‐empty subsets of H$H$ forms a semigroup P(H)$\mathcal {P}(H)$ under the sumset operation induced by addition in H$H$.
Salvatore Tringali, Kerou Wen
wiley   +1 more source

Commutativity of near-rings with (σ;τ)-derivations

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
In this paper we study some conditions under which a near-ring R admitting a (multiplicative) (σ; τ )-derivation d must be a commutative ring with constrained-suitable conditions on d, σ and τ.
Kamal Ahmed A. M., Al-Shaalan Khalid H.
doaj   +1 more source

Local multiplicativity of perverse filtrations

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract Let f:S→C$f:S\rightarrow C$ be a proper surjective morphism from a smooth Kähler surface to a smooth curve. We show that the local perverse filtration associated with the induced map S[n]→C(n)$S^{[n]}\rightarrow C^{(n)}$ is multiplicative on each fiber if and only if f$f$ is an elliptic fibration.
Zili Zhang
wiley   +1 more source

Certain Issues With the Commutativity of the Connective “i”

Studia Semiotyczne, 2020
DOI: http://doi.org/10.26333/stsen.xxxi.05 The conjunctive “i” is one of the four interpretations of the Polish connective “i” (“and” in English), along with the accessory, sequential and explicatory ones, which are distinguished by Olgierd ...
doaj  

Polyadic Systems, Representations and Quantum Groups

East European Journal of Physics, 2012
A review of polyadic systems and their representations is given. The classification of general polyadic systems is done. The multiplace generalization of homomorphisms, preserving associativity, is presented.
Steven Duplij
doaj  

ON (α; τ)-P-DERIVATIONS OF NEAR-RINGS [PDF]

Journal of Algebraic Systems
The relationship between derivations and algebraic structures of quotient near-rings has become a fascinating topic in modern algebra in recent decades. Assume $\mathcal{N}$ is a near-ring and $P$ is its prime ideal. In this paper we introduce the notion
Samir Mouhssine, Abdelkarim Boua
doaj   +1 more source

Aggregation and the Structure of Value

Noûs, Volume 60, Issue 3, Page 619-644, September 2026.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

Commutativity and spectral properties of genuine Baskakov-Durrmeyer type operators and their \(k\)th order Kantorovich modification

Journal of Numerical Analysis and Approximation Theory, 2015
In this paper we present an overview of commutativity results and different methods for the proofs for  Baskakov-Durrmeyer type operators and associated differential operators.
Margareta Heilmann
doaj   +2 more sources

RESULTS ON QUOTIENT NEAR-RINGS INVOLVING ADDITIVE MAPS [PDF]

Journal of Algebraic Systems
We consider N to be a 3-prime field and P to be a prime ideal of N : In this paper, we studythe commutativity of the quotient ring N =P with left multipliers and derivations satisfying certainidentities on P, generalizing some well-known results in the ...
Abderrahmane Raji, Abdelkarim Boua, Abdelilah Zerbane   +2 more
doaj   +1 more source