Results 21 to 30 of about 1,229 (303)

Stieltjes Perfect Semigroups are Perfect [PDF]

open access: yesCzechoslovak Mathematical Journal, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bisgaard, Torben Maack   +1 more
openaire   +2 more sources

On the boundedness of equivariant homeomorphism groups [PDF]

open access: yesOpuscula Mathematica, 2018
Given a principal \(G\)-bundle \(\pi:M\to B\), let \(\mathcal{H}_G(M)\) be the identity component of the group of \(G\)-equivariant homeomorphisms on \(M\). The problem of the uniform perfectness and boundedness of \(\mathcal{H}_G(M)\) is studied.
Jacek Lech   +2 more
doaj   +1 more source

Criterion for the cosemanticness of the Abelian groups in the enriched signature

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
In the present paper we give a criterion of the cosemanticness relative to the Jonsson spectrum of the model in the class of Abelian groups with a distinguished predicate.
A.R. Yeshkeyev   +2 more
doaj   +1 more source

Recognizing the P_4-structure of claw-free graphs and a larger graph class [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2002
The P_4-structure of a graph G is a hypergraph \textbfH on the same vertex set such that four vertices form a hyperedge in \textbfH whenever they induce a P_4 in G.
Luitpold Babel   +2 more
doaj   +1 more source

Generalized perfect numerical semigroups [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
In this work, we study the isolated gaps for generalized numerical semigroups, intro- duce generalized perfect numerical semigroups, and exemplify these semigroups.
Mohammad Zmmo, Nesrin Tutaş
doaj   +1 more source

The χ-Boundedness of P2∪P3-Free Graphs

open access: yesJournal of Mathematics, 2022
In the early 1980s, Gyárfás introduced the concept of the χ-bound with χ-binding functions thereby extending the notion of perfectness. There are a number of challenging conjectures about the χ-bound.
Xiao Wang, Donghan Zhang
doaj   +1 more source

Perfect and almost perfect sequences

open access: yesDiscrete Applied Mathematics, 1999
This is essentially a survey article concerning periodic \(\pm 1-\)sequences whose out-of phase (or off-peak) autocorrelation function has extremal properties. Such a binary sequence is perfect if the out-of-phase autocorrelation function has only two different values and these values are as small as possible.
Jungnickel, Dieter, Pott, Alexander
openaire   +3 more sources

PRODUKTIFITAS PENGELOLAAN WAKAF DI KECAMATAN LICIN KABUPATEN BANYUWANGI

open access: yesLisan Al-Hal: Jurnal Pengembangan Pemikiran dan Kebudayaan, 2019
Wahbah Zuhaili said that Syari’ah principles is to realize the purpose of generation actually in creating happiness of individual and jama’ah, carrying out and cele brating the world with an infrastructures wich will present to proccess of the ...
Ahmad Khoirin Andi
doaj   +1 more source

Environmental Justice in Quran and Hadith Teachings [PDF]

open access: yesتحقیقات علوم قرآن و حدیث, 2011
The incorrect interaction of human beings with the environment has lead to such an environmental unbalance that besides destroying the nature, it has disregarded justice in using nature resources.
Sayyed Mohammad Bagher Hojjati   +1 more
doaj   +1 more source

On Perfectness of Intersection Graph of Ideals of ℤn

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
In this short paper, we characterize the positive integers n for which intersection graph of ideals of ℤn is perfect.
Das Angsuman
doaj   +1 more source

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