151 research outputs found
Terwilliger algebras of wreath products by quasi-thin schemes
The structure of Terwilliger algebras of wreath products by thin schemes or
one-class schemes was studied in [A. Hanaki, K. Kim, Y. Maekawa, Terwilliger
algebras of direct and wreath products of association schemes, J. Algebra 343
(2011) 195--200]. In this paper, we will consider the structure of Terwilliger
algebras of wreath products by quasi-thin schemes. This gives a generalization
of their result
The Italian domination numbers of some products of directed cycles
An Italian dominating function on a digraph with vertex set is
defined as a function such that every vertex
with has at least two in-neighbors assigned under
or one in-neighbor with . In this paper, we determine the
exact values of the Italian domination numbers of some products of directed
cycles
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