Results 141 to 150 of about 115,744,936 (297)

β-Expansions in algebraic function fields over finite fields

open access: yesFinite Fields and Their Applications, 2007
The author studies \(\beta\)-expansions in algebraic function fields over finite fields. More precisely, let \({\mathbb F}\) be a finite field, \({\mathbb F}[x]\) be its ring of polynomials, and \({\mathbb F}((x^{-1}))\) be its field of formal Laurent series. Given \(z\) and \(\beta\) in \({\mathbb F}((x^{-1}))\), say that \[ z=\sum_{i=1}^{\infty}{{d_i}
openaire   +1 more source

Analyzing zero‐truncated recurrent event data by stratified regression with time‐varying coefficients

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract This article presents a strategy for conducting regression analysis of zero‐truncated recurrent event data. The research is partly motivated by a pediatric mental health care (PMHC) program based on administrative data. We are particularly interested in how the occurrence of an event depends on its past occurrences and the associated ...
Anqi A. Chen   +3 more
wiley   +1 more source

Invariants de Witt des involutions de bas degré en caractéristique 2

open access: yesComptes Rendus. Mathématique
A $3$-fold and a $5$-fold quadratic Pfister forms are canonically associated to every symplectic involution on a central simple algebra of degree $8$ over a field of characteristic $2$.
Tignol, Jean-Pierre
doaj   +1 more source

Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley   +1 more source

A Note on the Relativistic Transformation Properties of Quantum Stochastic Calculus

open access: yesEntropy
We present a simple argument to derive the transformation of the quantum stochastic calculus formalism between inertial observers and derive the quantum open system dynamics for a system moving in a vacuum (or, more generally, a coherent) quantum field ...
John E. Gough
doaj   +1 more source

From Nature to Supply Chain: Exploring Biomimicry‐Based Pathways to Sustainability and Competitive Advantage

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Inspired by insights gleaned from biomimicry theory, this paper addresses the persistent lack of theoretically grounded research in sustainable supply chain management (SSCM) and examines how nature‐inspired biomimicry principles could enhance various dimensions of its competitiveness. This study's theoretical contribution lies in its proposal
Susana Garrido   +4 more
wiley   +1 more source

A Lie-Theoretic Approach to the Invertibility Problem for Two-Dimensional Keller Endomorphisms Over the Real Numbers

open access: yesEngineered Science
The invertibility problem for polynomial mappings is a classical topic in algebra and algebraic geometry, closely related to the Jacobian condition introduced by O. H. Keller.
Rashid Kerimbayev, Lazat Spankulova
doaj   +1 more source

Photometric Diagnostic of the Sheath Dynamics and Electron Density Trends in Single and Dual Frequency CCRF Argon Plasmas

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT A methodological study is presented on a noninvasive photometric diagnostic for determining trends in electron density and sheath dynamics in single (1f) and a dual (2f) radio frequency capacitively coupled (CCRF) argon plasmas. The 1f discharges are operated at 13.56 and 27.12 MHz, respectively, while the 2f discharge is driven by both ...
Daniel Zuhayra   +3 more
wiley   +1 more source

Orders of a quaternion algebra over a number field.

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1996
Let \(A\) be an algebra over a number field. The author studies the Dirichlet series whose coefficients are the numbers of orders of \(A\) with given index in a fixed maximal order of \(A\). He shows that the series has an Euler product whose Euler \(p\)-factors are rational functions of \(p^{-s}\).
openaire   +1 more source

Review and prospects of shear test of bolted rock joints

open access: yesDeep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy