Results 31 to 40 of about 14,066,821 (311)
Direct product of automorphism groups of digraphs
Ars Math. Contemp., 2019 We study the direct product of automorphism groups of digraphs, where automorphism groups are considered as permutation groups acting on the sets of vertices. By a direct product of permutation groups ( A , V ) × ( B , W ) we mean the group ( A × B ,
Mariusz Grech +3 more
semanticscholar +1 more source
Transactions of the American Mathematical Society, 2020 A space is called minimal if it admits a minimal continuous selfmap. We give examples of metrizable continua $X$ admitting both minimal homeomorphisms and minimal noninvertible maps, whose squares $X\times X$ are not minimal, i.e., they admit neither minimal homeomorphisms nor minimal noninvertible maps, thus providing a definitive answer to a question
Dirb��k, Mat���� +2 more
openaire +3 more sources
ESAIM: Proceedings and Surveys, 2014 Let f:X → X be a continuous map defined from a topological space X into itself. We discuss the problem of analyzing and computing explicitly the set Per(fp) of periods of the p-th iterate ...
Cánovas J.S., Linero Bas A.
doaj +1 more source
Fuzzy Information and Engineering, 2023 Government policymakers face a problem about illustrating and evaluating strategies and plan to design active communities which need to be assessed for studying the collaboration between ministries.
Eman A. AbuHijleh
doaj +1 more source
Langford sequences and a product of digraphs [PDF]
, 2015 Skolem and Langford sequences and their many generalizations have applications in numerous areas. The $\otimes_h$-product is a generalization of the direct product of digraphs. In this paper we use the $\otimes_h$-product and super edge-magic digraphs to
López, Susana-Clara +1 more
core +4 more sources
Direct Product of Finite Fuzzy Normal Subrings Over Non-Associative Rings
International Journal of Analysis and Applications, 2019 In this paper, we define the concept of direct product of finite fuzzy normal subrings over nonassociative and non-commutative rings (LA-ring) and investigate the some fundamental properties of direct product of fuzzy normal subrings.
N. Kausar, Muhammad Azam Waqar
semanticscholar +1 more source
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
doaj +1 more source
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 \(A\).
openaire +1 more source
The co-rank of the fundamental group: The direct product, the first Betti number, and the topology of foliations [PDF]
, 2015 We study b1′ $b_{1}'$ (M), the co-rank of the fundamental group of a smooth closed connected manifold M. We calculate this value for the direct product of manifolds.
Irina Gelbukh
semanticscholar +1 more source
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
doaj +1 more source