Results 61 to 70 of about 467 (143)

New types of bipolar fuzzy sets in -semihypergroups [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
The notion of bipolar fuzzy set was initiated by Lee (2000) as a generalization of the notion fuzzy sets and intuitionistic fuzzy sets, which have drawn attention of many mathematicians and computer scientists.
Naveed Yaqoob   +3 more
doaj  

On Intra-Regular Semihypergroups Through Intuitionistic Fuzzy Sets [PDF]

open access: yes, 2013
The notion of intuitionistic fuzzy sets was introduced by Atanassov as ageneralization of the notion of fuzzy sets. In this paper, using Atanassov idea, wegive some properties of intuitionistic fuzzy hyperideals and intuitionistic fuzzy bihyperidealsin a
Jani DINE, Kostaq HILA
core  

The $E_t$-Construction for Lattices, Spheres and Polytopes

open access: yes, 2004
We describe and analyze a new construction that produces new Eulerian lattices from old ones. It specializes to a construction that produces new strongly regular cellular spheres (whose face lattices are Eulerian).
Paffenholz, Andreas, Ziegler, Günter M.
core   +2 more sources

Existence and uniqueness theorem for convex polyhedral metrics on compact surfaces [PDF]

open access: yes, 2010
We state that any constant curvature Riemannian metric with conical singularities of constant sign curvature on a compact (orientable) surface $S$ can be realized as a convex polyhedron in a Riemannian or Lorentzian) space-form.
Fillastre, François
core  

Scribability problems for polytopes

open access: yes, 2017
In this paper we study various scribability problems for polytopes. We begin with the classical $k$-scribability problem proposed by Steiner and generalized by Schulte, which asks about the existence of $d$-polytopes that cannot be realized with all $k ...
Chen, Hao, Padrol, Arnau
core   +1 more source

Hyperideal-based intersection graphs

open access: yesIndian Journal of Pure and Applied Mathematics, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mohammad Hamidi   +2 more
openaire   +1 more source

Spectrum of Zariski Topology in Multiplication Krasner Hypermodules

open access: yesMathematics, 2023
In this paper, we define the concept of pseudo-prime subhypermodules of hypermodules as a generalization of the prime hyperideal of commutative hyperrings.
Ergül Türkmen   +2 more
doaj   +1 more source

Hyperideal theory in ordered Krasner hyperrings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper, we study some properties of ordered Krasner hyper-rings. Also we state some definitions and basic facts and prove some results on ordered Krasner hyperring (R, +, ·, ≤).
Omidi Saber, Davvaz Bijan
doaj   +1 more source

On Pure Hyperideals In Ternary Semihypergroups [PDF]

open access: yes, 2013
This paper deals with a class of algebraic hyperstructures called ternarysemihypergroups, which are a generalization of ternary semigroups. In this paper weintroduce some special classes of hyperideals in ternary semihypergroups.
Kostaq HILA, Krisanthi NAKA
core  

Infinitesimal rigidity of a compact hyperbolic 4-orbifold with totally geodesic boundary

open access: yes, 2008
Kerckhoff and Storm conjectured that compact hyperbolic n-orbifolds with totally geodesic boundary are infinitesimally rigid when n>3. This paper verifies this conjecture for a specific example based on the 4-dimensional hyperbolic 120-cell.Comment: 9 ...
Calabi   +6 more
core   +1 more source

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