Results 21 to 30 of about 1,226,392 (267)
Hyperbolicity of Direct Products of Graphs [PDF]
Symmetry, 2018 It is well-known that the different products of graphs are some of the more symmetric classes of graphs. Since we are interested in hyperbolicity, it is interesting to study this property in products of graphs. Some previous works characterize the hyperbolicity of several types of product graphs (Cartesian, strong, join, corona and lexicographic ...
Walter Carballosa +3 more
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Direct product of Neutrosophic INK Algebras [PDF]
Neutrosophic Sets and Systems, 2020 In this paper, first we define the notion direct product of neutrosophic sets in INK-algebras, neutrosophic set, neutrosophic INK-ideals, neutrosophic closed INK-ideals and direct product of neutrosophic INK-ideals in INK-algebras. We prove some theorems
M. Kaviyarasu +2 more
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Union of Distance Magic Graphs
Discussiones Mathematicae Graph Theory, 2017 A distance magic labeling of a graph G = (V,E) with |V | = n is a bijection ℓ from V to the set {1, . . . , n} such that the weight w(x) = ∑y∈NG(x) ℓ(y) of every vertex x ∈ V is equal to the same element μ, called the magic constant.
Cichacz Sylwia, Nikodem Mateusz
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Rainbow eulerian multidigraphs and the product of cycles [PDF]
Discrete Mathematics & Theoretical Computer Science, 2016 An arc colored eulerian multidigraph with $l$ colors is rainbow eulerian if there is an eulerian circuit in which a sequence of $l$ colors repeats. The digraph product that refers the title was introduced by Figueroa-Centeno et al. as follows: let $D$ be
Susana López +1 more
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Permanents of Direct Products [PDF]
Proceedings of the American Mathematical Society, 1966 It is well known that if \(A\) and \(B\) are \(n\) and \(m\)-square matrices, respectively, then \(\det(A\otimes B) = (\det A)^m (\det B)^n\), where \(A\otimes B)\) is the tensor or direct product of \(A\) and \(B\). This implies \[ \vert\det(A\otimes B)\vert^2 = (\det(AA^*))^m (\det(B^*B))^n, \] where \(A^*\) is the conjugate transpose of \(A\).
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Two dimentional lattice vibrations from direct product representations of symmetry groups
International Journal of Mathematics and Mathematical Sciences, 1983 Arrangements of point masses and ideal harmonic springs are used to model two dimensional crystals. First, the Born cyclic condition is applied to a double chain composed of coupled linear lattices to obtain a cylindrical arrangement.
J. N. Boyd, P. N. Raychowdhury
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Complex Vague Graphs and Their Application in Decision-Making Problems
IEEE Access, 2020 Fuzzy graph models are found everywhere in natural and human made structures, including process dynamics in biological, physical and social systems. Since real-life problems are often uncertain due to inconsistent and indeterminate information, it is ...
Shouzhen Zeng +4 more
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On homological classification of pomonoids by GP-po-flatness of S-posets
Open Mathematics, 2016 In this paper, we introduce GP-po-flatness property of S-posets over a pomonoid S, which lies strictly between principal weak po-flatness and po-torsion freeness.
Liang Xingliang +2 more
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The Intersection Theorem for Direct Products
European Journal of Combinatorics, 1998 Let \(n=n_1+\cdots+n_m,\) \(k=k_1+\cdots+k_m\) (every item an integer) and let \(X_1,\dots,X_m\) pairwise disjoint sets with \(n_i\) elements, resp. Denote \(\mathcal H\) the set of those subsets of \(X\) which intersect \(X_i\) in \(k_i\) elements, resp.
Ahlswede, Rudolf +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source