Results 41 to 50 of about 63,567 (182)

On the eigenvalues of zero-divisor graph associated to finite commutative ring

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
Let Z(R) be the set of zero-divisors of a commutative ring R with non-zero identity and be the set of non-zero zero-divisors of R. The zero-divisor graph of R, denoted by is a simple graph whose vertex set is and two vertices are adjacent if and only if ...
S. Pirzada   +2 more
doaj   +1 more source

Wheat flour particle size: Influence of mill design and effects on quality and performance

open access: yesJSFA reports, EarlyView.
Abstract Among the various characteristics of wheat (Triticum aestivum) flour, particle size is of paramount importance globally. The industrial process of separating the three main components (endosperm, bran, and germ) must ensure that the desired quality is delivered to customers through a progressive reduction in the size of the endosperm until the
Ricardo Barroso Lopes   +3 more
wiley   +1 more source

On zero-divisors in group rings of groups with torsion

open access: yes, 2012
Nontrivial pairs of zero-divisors in group rings are introduced and discussed. A problem on the existence of nontrivial pairs of zero-divisors in group rings of free Burnside groups of odd exponent $n \gg 1$ is solved in the affirmative. Nontrivial pairs
Cohn   +13 more
core   +1 more source

A Novel Two‐Stage Flexible Flow Shop Batch Scheduling Model for Grinding Workshops

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT The growing need for data storage in data centers has increased the demand for mechanical hard disks due to their low cost and high reliability. Aluminum substrates are the most popular base plates for mechanical hard disks because of their high hardness and low cost.
Jun Xu   +4 more
wiley   +1 more source

Normal crossing properties of complex hypersurfaces via logarithmic residues

open access: yes, 2014
We introduce a dual logarithmic residue map for hypersurface singularities and use it to answer a question of Kyoji Saito. Our result extends a theorem of L\^e and Saito by an algebraic characterization of hypersurfaces that are normal crossing in ...
Aleksandrov   +13 more
core   +1 more source

Sonified Signals From a Compact FT‐ICR Instrument: A Feasibility Study. I—Data Mapping to an Equal‐Tempered Chromatic Scale

open access: yesRapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Ions trapped within a Penning cell (ICR) travel periodic orbits whose frequencies are dependent on their mass‐to‐charge ratio and the value of the magnetic field passing through the trap. Fourier transformation (FT‐ICR) decomposes the signal induced in the detection circuit by the rotation of the ions in the cell after the ...
Patrick Arpino, Michel Heninger
wiley   +1 more source

Reduction of a pair of matrices to a special triangular form over a ring of almost stable range 1 (in Ukrainian) [PDF]

open access: yesМатематичні Студії, 2012
In the paper it is considered a notion of a ring of almost stable range 1. It is shown that an arbitrary pair of matrices over commutative Bezout domain of almost stable range 1, where at least one of the matrices is not a zero divisor, reduced to a ...
S. I. Bilavska, I. S. Vasyunyk
doaj  

Torus invariant divisors

open access: yes, 2010
Using the language of polyhedral divisors and divisorial fans we describe invariant divisors on normal varieties X which admit an effective codimension one torus action.
A. Liendo   +9 more
core   +1 more source

ON DIVISOR PROBLEMS [PDF]

open access: yesThe Quarterly Journal of Mathematics, 1938
Let \(\Delta_k(x)\) be the error term in the divisor problem of Piltz, so that \[ \sum_{n\le x} d_k(n) = P_k(x) + \Delta_k(x), \] where \(d_k(n)\) is the number of solutions of \(n_1\cdots n_k = n\) in positive integers \(n_1,\ldots n_k\), and \(P_k(x)\) is the residue of \(x^s \zeta^k(s)/s\) at \(s = 1\).
openaire   +2 more sources

Analogies and differences between the logic behind statistical hypothesis testing and proofs by contradiction: What can we learn from them?

open access: yesTeaching Statistics, EarlyView.
Abstract Statistical hypothesis testing (SHT) is widely employed across numerous scientific disciplines, and a clear understanding of its underlying logic is essential for the broader scientific community. Here, drawing upon both epistemological and statistical perspectives, we aim to clarify—primarily for educational purposes—the logical relationship ...
Maria Cristina Amoretti   +1 more
wiley   +1 more source

Home - About - Disclaimer - Privacy