Results 51 to 60 of about 324 (107)
Derived moduli of complexes and derived Grassmannians [PDF]
, 2015 In the first part of this paper we construct a model structure for the category of filtered cochain complexes of modules over some commutative ring $R$ and explain how the classical Rees construction relates this to the usual projective model structure ...
Di Natale, Carmelo
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Contributo alle iperstrutture matroidali
Le Matematiche, 1997 In this paper we continue the investigation of matroidal hyperstructures, introduced in [8], [9], [15], [17], [22]. In the first section, we define the sub-hypergroupoid [A] generated by a subset A of an hypergroupoid (H, •).
Domenico Freni
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, 2012 We present a short review of geometric and algebraic approach to causal cones and describe cone preserving transformations and their relationship with causal structure related to special and general theory of relativity.
Janardhan, Sujatha, Saraykar, R. V.
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Applicazioni (h,A)-lineari omomorfismi di M_A-ipergruppoidi
Le Matematiche, 1999 In the papers [9], [10] we introduced and studied M_λ -hypergroupoids; also, we obtained some results on the automorphism group of a G_ λ -hypergroupoid.
Domenico Freni
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M_λ ipergruppoidi matroidali. Applicazioni λ-lineari e automorfismi di M_λ-ipergruppoidi
Le Matematiche, 1998 In this paper we forward in the investigation of the matroidal M_λ -hypergrupoids introduced in [13]. We give necessary and sufficient conditions for such hypergrupoid to be matroidal; moreover, we find its cardinality and we analyse the properties of ...
Domenico Freni
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Generalized fuzzy hypergraphs and hypergroupoids
Filomat, 2016 This article first generalizes the ordinary fuzzy hypergraphs to generalized fuzzy hypergraphs and it makes a connection between generalized fuzzy hypergraphs and fuzzy hyperstructures. We construct a partial fuzzy hypergroupoid associated with it, giving some properties of the associated fuzzy hyperstructure.
Mahdi Farshi, Bijan Davvaz
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Green's Relations for Hypergroupoids
European Journal of Pure and Applied Mathematics, 2018 We give some information concerning the Green's relations $\cal R$ and $\cal L$ in hypergroupoids extending the concepts of right (left) consistent or intra-consistent groupoids in case of hypergroupoids. We prove, for example, that if an hypergroupoid $H$ is right (left) consistent or intra-consistent, then the Green's relations $\cal R$ and $\cal L ...
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A family of 0-simple semihypergroups related to sequence A000070 [PDF]
, 2016 For any integer n 65 2, let R_0(n + 1) be the class of 0-semihypergroups H of size n + 1 such that {y} 86 xy 86 {0, y} for all x, y 08 H - {0}, all subsemihypergroups K 86 H are 0-simple and, when |K| 65 3, the fundamental relation \u3b2_K is not ...
De Salvo, Mario +3 more
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Augmented Homotopical Algebraic Geometry
, 2017 We develop the framework for augmented homotopical algebraic geometry. This is an extension of homotopical algebraic geometry, which itself is a homotopification of classical algebraic geometry.
Balchin, Scott
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MULTIVALUED FUNCTIONS, FUZZY SUBSETS AND JOIN SPACES
Ratio Mathematica, 2010 One has considered the Hypergroupoid Η Γ = < H;ο Γ > associated with a multivalued function Γ from H to a set D, defined as follows: ∀ x ∈ H, x ο Γ x = ⎨y⏐ Γ(y) ∩ Γ(x) ≠ ∅⎬ , ∀ (y,z) ∈ H 2 , y ο Γ z = y ο Γ y ∪ z ο Γ z , and one has calculated the fuzzy ...
Piergiulio Corsini, Razieh MAHJOOB
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