On the Maximum Cliques in Powers of Hypercubes

Abstract

Finding the values of [Formula: see text] and [Formula: see text] is a fundamental problem in classical coding theory. The [Formula: see text] is the size of the maximum independent set of [Formula: see text] which is the induced subgraph of vectors of weight [Formula: see text] of the [Formula: see text]-power of [Formula: see text]-dimensional hypercubes. Obviously, [Formula: see text]. In order to further understand and study the independent set of [Formula: see text], we explore its clique number and the structure of the maximum clique. In this paper, we obtain the clique number and the structure of the maximum clique of [Formula: see text] for [Formula: see text] As an application, by [Formula: see text] we obtain the upper bounds of [Formula: see text] for [Formula: see text]