Results 21 to 30 of about 96 (96)

A new view of relationship between atomic posets and complete (algebraic) lattices

open access: yesOpen Mathematics, 2017
In the context of the atomic poset, we propose several new methods of constructing the complete lattice and the algebraic lattice, and the mutual decision of relationship between atomic posets and complete lattices (algebraic lattices) is studied.
Yu Bin, Li Qingguo, Wu Huanrong
doaj   +1 more source

A note on composition (m, n)-hyperrings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
Based on the concepts of composition ring and composition hyper- ring, in this note we introduce the notion of composition structure for (m, n)-hyperrings and study the connections with composition hy- perrings.
Norouzi Morteza, Cristea Irina
doaj   +1 more source

Division hypernear-rings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018
This paper is a continuation of our work on hypernear-rings with a defect of distributivity D. In particular, here we introduce and study a new subclass of hypernear-rings, called D-division hypernear-rings, establishing a necessary and sufficient ...
Jančić-Rašović Sanja, Cristea Irina
doaj   +1 more source

Video del poema 'Poderoso: Un manifiesto que sueña otros futuros posibles'

open access: yes, 2022
Video subtitulado de la lectura colectiva del poema ‘Poderoso’, escrito de manera colaborativa por jóvenes bogotanos en 2019. El poema recoge experiencias y modos de resistencia de los jóvenes de Bogotá, Soacha, Sumapaz y otras regiones del país.
Colombia. Comisión para el Esclarecimiento de la Verdad, la Convivencia y la No Repetición (CEV)
core  

Projecting future damage costs of non‐native species using combined dynamical and cost–density equations

open access: yesEcological Applications, Volume 36, Issue 5, July 2026.
Abstract Biological invasions threaten biodiversity, economic stability, and public health, exacerbated by intensive global trade and transport. The economic costs of these invasions have exceeded US$2 trillion globally and continue to increase. Although past invasion costs have been described across various contexts, there are few robust projections ...
Danish A. Ahmed   +11 more
wiley   +1 more source

Fundamental relation on m-idempotent hyperrings

open access: yesOpen Mathematics, 2017
The γ*-relation defined on a general hyperring R is the smallest strongly regular relation such that the quotient R/γ* is a ring. In this note we consider a particular class of hyperrings, where we define a new equivalence, called εm∗$\varepsilon^{*}_{m}
Norouzi Morteza, Cristea Irina
doaj   +1 more source

Poderoso

open access: yes, 2022
Este poema fue creado por las y los jóvenes de la red Somos Generación de Verdad, para movilizar la esperanza hacia la no repetición de las violencias del conflicto armado.
Colombia. Comisión para el Esclarecimiento de la Verdad, la Convivencia y la No Repetición (CEV)
core  

Generation cycles in experimental populations of a multivoltine insect

open access: yesJournal of Animal Ecology, Volume 95, Issue 5, Page 782-794, May 2026.
Although theory suggests various mechanisms by which environmental and ecological factors may drive generational fluctuations, our field‐cage experiment is the first to demonstrate how internal dynamics and external disturbances jointly produce synchronised, large‐scale outbreak cycles.
Takehiko Yamanaka   +3 more
wiley   +1 more source

A novel method to construct NSSD molecular graphs

open access: yesOpen Mathematics, 2019
A graph is said to be NSSD (=non-singular with a singular deck) if it has no eigenvalue equal to zero, whereas all its vertex-deleted subgraphs have eigenvalues equal to zero.
Hayat Umar   +4 more
doaj   +1 more source

Divisible hypermodules

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
The article is motivated by the recently published studies on injective and projective hypermodules. We present here a new characterization of the normal injective hypermodules. First we define the concept of zero-divisors over a hypermodule and based on
Bordbar Hashem, Cristea Irina
doaj   +1 more source

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