Results 21 to 30 of about 208,012 (229)

Semigroups with inverse skeletons and Zappa-Sz'{e}p products [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2013
The aim of this paper is to study semigroups possessing $E$-regular elements, where an element $a$ of a semigroup $S$ is {em $E$-regular} if $a$ has an inverse $a^circ$ such that $aa^circ,a^circ a$ lie in $ Esubseteq E(S)$. Where $S$ possesses `enough'
Victoria Gould, Rida-e- Zenab
doaj  

Rational choice function derived from a fuzzy preference

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
We shall prove that every fuzzy rational choice function is fuzzy regular (see Richter [6, p. 36] ), count the total number of the fuzzy rational choice ftmctions on a set of four elements and consider a semigroup of all fuzzy rational choice functions ...
Jin Bai Kim, Kern O. Kymn
doaj   +1 more source

Meiotic self-pairing of the Psalidodon (Characiformes, Characidae) iso-B chromosome: A successful perpetuation mechanism

open access: yesGenetics and Molecular Biology, 2021
B chromosomes are non-essential additional genomic elements present in several animal and plant species. In fishes, species of the genus Psalidodon (Characiformes, Characidae) harbor great karyotype diversity, and multiple populations carry different ...
Duílio Mazzoni Zerbinato de Andrade Silva   +7 more
doaj   +1 more source

Higher orbital integrals, Shalika germs, and the Hochschild homology of Hecke algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We give a detailed calculation of the Hochschild and cyclic homology of the algebra 𝒞c∞(G) of locally constant, compactly supported functions on a reductive p-adic group G. We use these calculations to extend to arbitrary elements the definition
Victor Nistor
doaj   +1 more source

When spectra of lattices of $z$-ideals are Stone-Čech compactifications [PDF]

open access: yesMathematica Bohemica, 2017
Let $X$ be a completely regular Hausdorff space and, as usual, let $C(X)$ denote the ring of real-valued continuous functions on $X$. The lattice of $z$-ideals of $C(X)$ has been shown by Martínez and Zenk (2005) to be a frame.
Themba Dube
doaj   +1 more source

Tillage Management Impacts on Soil Phosphorus Variability under Maize–Soybean Rotation in Eastern Canada

open access: yesSoil Systems, 2022
Conservation tillage, including no-tillage (NT), is being used increasingly with respect to conventional tillage (CT) to mitigate soil erosion, improve water conservation and prevent land degradation.
Jeff D. Nze Memiaghe   +3 more
doaj   +1 more source

Effects of high intensity interval training on trace minerals and physiological parameters in tennis players

open access: yesPhysical Education of Students, 2022
Background and Study Aim. This study investigated the effects of HIIT (high-intensity interval training) implementations on some serum elements, resting heart rate, total body weight, and BMI parameters in tennis players. Material and Methods.
Salih Öner, Yavuz Yasul
doaj   +1 more source

A Functional Calculus for Quotient Bounded Operators [PDF]

open access: yesSurveys in Mathematics and its Applications, 2006
If (X, P) is a sequentially locally convex space, then a quotient bounded operator T beloging to QP is regular (in the sense of Waelbroeck) if and only if it is a bounded element (in the sense of Allan) of algebra QP.
Sorin Mirel Stoian
doaj  

Graphs, friends and acquaintances

open access: yesElectronic Journal of Graph Theory and Applications, 2018
A graph is a mathematical object modeling the existence of a certain relation between pairs of elements of a given set. Many of the first results concerning graphs made reference to relationships between groups of people.
Cristina Dalfo, Miquel Àngel Fiol
doaj   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

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