Let Kn be a complete graph on n vertices.In this paper,we find the necessary conditions for the existence of a 6-cycle system of Kn L for every nearly 2-regular
Let ζ be a class of finite groups. A subgroup H of a finite group G is said to be ζs-quasinormal in G if there exists a normal subgroup T of G such that HT is
In this paper, we mainly consider weighted sensitivity minimization by a stable controller for linear time-invariant and time-varying systems. The problem is re