منابع مشابه
A Note on the Four-point Property
x = niabcfghpqr, y = nigh(af) 2 p*, z = mca(bg) 2 q s , w = tnbf{ch) 2 r z , where the parameters m, • • • , r may be restricted by the G.CD. conditions 1 = (o,f) = (b,g) = (c,h), 1 = (afp, bcqr) = (bgq, hfrp) = (chr, agpq). The most immediate application of this is to the solution of # 3 +/(:y> £> «0 = 0> where ƒ (y, z, w) is any ternary cubic factorable into 3 linear, homogeneous factors whos...
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An elementary setting of the classical Ramsey property is given, which leads to simple proofs of the relevant theorems of Galvin-Prikry and Silver.
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متن کاملA note on hypergraphs with the Helly-property
If H = ( V, ~) is a finite simple hypergraph-the notions and notations of [1] are used throughout the paper-we define Ht as the hypergraph with vertex set V and edges U L= 1 Eik where Eik E ~' ik 1 :;i; ik2 for k1 :;i; k2. (H =His obvious). In the present note some properties of the transversal number fJ of Ht are investigated under the assumption that H has the Helly-property. (H has the Helly...
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I Given a finite point set X ⊂ Rd . Then there exists simplicial a complex called Delaunay triangulation of this point set such that I X is the set of vertices of the triangulation I The union of all its simplices is the convex hull of X . I (Delaunay property): For any given d-simplex Σ ⊂ Ω belonging to the triangulation, the interior of its circumsphere does not contain any vertex xk ∈ X . I ...
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 1987
ISSN: 0024-3795
DOI: 10.1016/0024-3795(87)90072-3