Results 11 to 20 of about 18,520 (199)

Join Spaces and Lattices

Axioms
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, Sarka Hoskova-Mayerova   +1 more
doaj   +5 more sources

Categorical Join and Generating Families in Diffeological Spaces

Mathematics, 2023
We prove that a diffeological space is diffeomorphic to the categorical join of any generating family of plots.
E. Macías, R. Mehrabi
doaj   +4 more sources

Pseudo-median graphs are join spaces

Discrete Mathematics, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Henry Martyn Mulder
exaly   +3 more sources

Join Spaces, Soft Join Spaces and Lattices [PDF]

Analele 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, Davvaz Bijan, Feng Feng, Chiper Codrina   +3 more
doaj   +2 more sources

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

Journal 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, Bruno J. Schmidt, Thomas Gatter, Richard Golnik, Paul Eisenhuth, Fabian Liessmann, Jens Meiler, Peter F. Stadler   +7 more
doaj   +2 more sources

Abelization of join spaces of affine transformations of ordered field with proximity [PDF]

Applied General Topology, 2005
Using groups of affine transformations of linearly ordered fields a certain construction of non-commutative join hypergroups is presented based on the criterion of reproducibility of semi-hypergroups which are determined by ordered semigroups. The aim of
Sárka Hosková
doaj   +2 more sources

Join operations in vector spaces

Monatshefte 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

JOIN GEOMETRIES : UN APPROCCIO SINTETICO ALLA CONVESSITA'

Ratio Mathematica, 1992
Gli insiemi convessi hanno come noto un ruolo centrale nei problemi di ottimizzazione. Essi intervengono ad esempio come insiemi soluzione di un sistema di disequazioni lineari in n variabili reali.
Antonio Leonelli
doaj   +1 more source

Advanced analysis and join queries in multidimensional spaces

, 2015
Multidimensional data are ubiquitous and their efficient management and analysis is a core database research problem. There are lots of previous works focusing on indexing, analyzing and querying multidimensional data. In this dissertation, three challenging advanced analysis and join problems in multidimensional spaces are proposed and studied ...
葛屾., Ge, Shen.
openaire   +3 more sources

On special weak free (semi)hypergroups [PDF]

Journal 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