Li Y.
G-covering systems of subgroups for
the class of supersoluble groups
Let F be a class of groups. Given a group G, assign
to G some set of its subgroups Σ = Σ(G). We say that Σ is a G-covering
system of subgroups for F (or, in other words, an
F-covering system
of subgroups in G) if G ∈ F wherever either
Σ = Ø or Σ ≠ Ø and every
subgroup in Σ belongs to F. In this paper, we provide some nontrivial
sets of subgroups of a finite group G which are G-covering subgroup
systems for the class of supersoluble groups. These are the generalizations
of some recent results, such as in [1–3].