Results 1 to 10 of about 16,085 (157)

Join Spaces and Lattices

open access: yesAxioms
Hypergroups represent a generalization of groups, introduced by Marty, that are rich in applications in several sectors of mathematics and in other fields.
Violeta Leoreanu-Fotea   +1 more
doaj   +4 more sources

Join Spaces, Soft Join Spaces and Lattices [PDF]

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
The aim of this paper is to initiate and investigate new (soft) hy-perstructures, particularly (soft) join spaces, using important classes of lattices: modular and distributive.
Leoreanu-Fotea Violeta   +3 more
doaj   +2 more sources

Categorical Join and Generating Families in Diffeological Spaces

open access: yesMathematics, 2023
We prove that a diffeological space is diffeomorphic to the categorical join of any generating family of plots.
E. Macías, R. Mehrabi
doaj   +3 more sources

Crossover operators for molecular graphs with an application to virtual drug screening [PDF]

open access: yesJournal of Cheminformatics
Genetic algorithms are a powerful method to solve optimization problems with complex cost functions over vast search spaces that rely in particular on recombining parts of previous solutions. Crossover operators play a crucial role in this context. Here,
Nico Domschke   +7 more
doaj   +2 more sources

Pseudo-median graphs are join spaces

open access: yesDiscrete Mathematics, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Henry Martyn Mulder   +1 more
exaly   +2 more sources

Join operations in vector spaces

open access: yesMonatshefte Fur Mathematik, 1977
LetX be a vector space over a totally ordered fieldF and Λ a subset ofF. Necessary and sufficient conditions are obtained on Λ for a join defined bya·b={λa+(1−λ)b|λ∈Λ} to make (X,·) (i) a convexity space (ii) a join system and (iii) a join space. For (X,·) to be a convexity space Λ is necessarily the set of elements between 0 and 1 for some ordered ...
Baston, V.J., Bostock, F.A.
exaly   +3 more sources

On special weak free (semi)hypergroups [PDF]

open access: yesJournal of Hyperstructures, 2013
In this paper, we study some properties of special weak free (semi)hypergroups and we generalize the Nielsen-Schreier theorem for the class of special weak free hypergroups.
Morteza Jafarpour, Abdolah Chashiyani
doaj   +1 more source

Metric space similarity joins [PDF]

open access: yesACM Transactions on Database Systems, 2008
Similarity join algorithms find pairs of objects that lie within a certain distance ϵ of each other. Algorithms that are adapted from spatial join techniques are designed primarily for data in a vector space and often employ some form of a multidimensional index.
Edwin H. Jacox, Hanan Samet
openaire   +1 more source

Joins of double coset spaces [PDF]

open access: yesPacific Journal of Mathematics, 1982
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bhattarai, H. N., Fernandez, J. W.
openaire   +2 more sources

A Survey on the Theory of n-Hypergroups

open access: yesMathematics, 2023
This paper presents a series of important results from the theory of n-hypergroups. Connections with binary relations and with lattices are presented. Special attention is paid to the fundamental relation and to the commutative fundamental relation.
Bijan Davvaz   +2 more
doaj   +1 more source

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