Results 51 to 60 of about 43,687 (165)

Irreducible actions and compressible modules

open access: yes, 2010
Any finite set of linear operators on an algebra $A$ yields an operator algebra $B$ and a module structure on A, whose endomorphism ring is isomorphic to a subring $A^B$ of certain invariant elements of $A$.
Albuquerque H.   +9 more
core   +1 more source

Adherence to Insulin Treatment in People With Type 1 or Type 2 Diabetes in Primary Health Care in a Brazilian City: A Cross‐Sectional Study

open access: yesHealth Science Reports, Volume 9, Issue 3, March 2026.
ABSTRACT Background and Aim Non‐adherence to diabetes medication treatment is a recognized public health problem that can lead to unfavorable clinical, humanistic, and economic outcomes. This study aimed to analyze adherence to insulin treatment in people with type 1 diabetes or type 2 diabetes in primary health care in a Brazilian municipality ...
Lívia Maria Ferrante Vizzotto Consoli   +5 more
wiley   +1 more source

A one-sided Prime Ideal Principle for noncommutative rings

open access: yes, 2011
Completely prime right ideals are introduced as a one-sided generalization of the concept of a prime ideal in a commutative ring. Some of their basic properties are investigated, pointing out both similarities and differences between these right ideals ...
Andrunakievich V. A.   +7 more
core   +1 more source

Contractions of graphs: A theorem of ore and an extremal problem

open access: yesDiscrete Mathematics, 1978
The contractibility number (also known as the Hadwiger number) of a connected graph G, Z(G), is defined as the maximum order of a connected graph onto which G is contractible. An elementary proof is given of a theorem of Ore about this invariant. Also, the extremal problem of finding the maximum Z(G) over all graphs G of a given order and regularity ...
openaire   +3 more sources

The largest strong left quotient ring of a ring

open access: yes, 2015
For an arbitrary ring $R$, the largest strong left quotient ring $Q_l^s(R)$ of $R$ and the strong left localization radical $\glsR$ are introduced and their properties are studied in detail. In particular, it is proved that $Q_l^s(Q_l^s(R))\simeq Q_l^s(R)
Bavula, V. V.
core   +1 more source

Density Theorems for Nonuniform Sampling of Bandlimited Functions Using Derivatives or Bunched Measurements [PDF]

open access: yesJournal of Fourier Analysis and Applications, 2016
We provide sufficient density condition for a set of nonuniform samples to give rise to a set of sampling for multivariate bandlimited functions when the measurements consist of pointwise evaluations of a function and its first $k$ derivatives. Along with explicit estimates of corresponding frame bounds, we derive the explicit density bound and show ...
Adcock, Ben   +2 more
openaire   +2 more sources

Completing Multi‐Latin Rectangles via Factors With Prescribed Degrees in Bipartite Graphs

open access: yesJournal of Combinatorial Designs, Volume 34, Issue 1, Page 31-36, January 2026.
ABSTRACT Let Q be an n × n array whose top left r × s sub‐array L is filled with a set of k different symbols such that each cell of L contains λ symbols. In this note, we find conditions under which each empty cell of Q can be filled with λ symbols in such a way that the total number of occurrences of each symbol is prescribed and that each symbol ...
Amin Bahmanian
wiley   +1 more source

Topological Aspects of Quadratic Graphs and M‐Polynomials Utilizing Classes of Finite Quasigroups

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
Material science, drug design and toxicology studies, which relate a molecule’s structure to its numerous properties and activities, are studied with the use of the topological index. Graphs with finite algebraic structure find extensive applications in fields such as mathematics, elliptic curve cryptography, physics, robotics and information theory ...
Mohammad Mazyad Hazzazi   +5 more
wiley   +1 more source

Entropy in Hydrology

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract Although the concept of thermodynamic entropy due to Clausius dates back to the early 1850s, the mathematical theory of informational entropy was not developed until the pioneering work of Shannon in 1948, the development of principle of maximum entropy (POME) and theorem of concentration by Jaynes in 1957, principle of minimum cross entropy ...
Vijay P. Singh
wiley   +1 more source

A generalization of Spira's theorem and circuits with small segregators or separators

open access: yesInformation and Computation, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gál, Anna, Jang, Jing-Tang
openaire   +1 more source

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