Results 51 to 60 of about 1,476 (137)

On computing local monodromy and the numerical local irreducible decomposition

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract Similarly to the global case, the local structure of a holomorphic subvariety at a given point is described by its local irreducible decomposition. Geometrically, the key requirement for obtaining a local irreducible decomposition is to compute the local monodromy action of a generic linear projection at the given point, which is always well ...
Parker B. Edwards, Jonathan D. Hauenstein   +1 more
wiley   +1 more source

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

Recursive and Cyclic Constructions for Double‐Change Covering Designs

Journal of Combinatorial Designs, Volume 34, Issue 4, Page 198-209, April 2026.
ABSTRACT A double‐change covering design (DCCD) is a v‐set V and an ordered list L of b blocks of size k where every pair from V must occur in at least one block and each pair of consecutive blocks differs by exactly two elements. It is minimal if it has the fewest blocks possible and circular when the first and last blocks also differ by two elements.
Amanda Lynn Chafee, Brett Stevens
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

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 the Rigorous Correspondence Between Operator Fractional Powers and Fractional Derivatives via the Sonine Kernel

Fractal and Fractional
Traditional operational calculus, while intuitive and effective in addressing problems in physical fractal spaces, often lacks the rigorous mathematical foundation needed for fractional operations, sometimes resulting in inconsistent outcomes. To address
Zelin Liu, Xiaobin Yu, Yajun Yin
doaj   +1 more source

On Generalized Derivations and Commutativity of Associative Rings

Discussiones Mathematicae - General Algebra and Applications, 2020
Let 𝒭 be a ring with center Z(𝒭). A mapping f : 𝒭 → 𝒭 is said to be strong commutativity preserving (SCP) on 𝒭 if [f (x), f (y)] = [x, y] and is said to be strong anti-commutativity preserving (SACP) on 𝒭 if f (x) ◦ f (y) = x ◦ y for all x, y ∈𝒭.
Sandhu Gurninder S., Kumar Deepak, Davvaz Bijan   +2 more
doaj   +1 more source

A classification of Prüfer domains of integer‐valued polynomials on algebras

Bulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract Let D$D$ be an integrally closed domain with quotient field K$K$ and A$A$ a torsion‐free D$D$‐algebra that is finitely generated as a D$D$‐module and such that A∩K=D$A\cap K=D$. We give a complete classification of those D$D$ and A$A$ for which the ring IntK(A)={f∈K[X]∣f(A)⊆A}$\textnormal {Int}_K(A)=\lbrace f\in K[X] \mid f(A)\subseteq A ...
Giulio Peruginelli, Nicholas J. Werner
wiley   +1 more source

Characterizations of Commutativity of Prime Ring with Involution by Generalized Derivations

Mathematics
In the paper, we investigate the commutativity of a two-torsion free prime ring R provided with generalized derivations, and some well-known results that characterize the commutativity of prime rings through generalized derivations have been generalized.
Mingxing Sui, Quanyuan Chen
doaj   +1 more source