ime-power index. We start with the following question.
Let x ∈ G and suppose that Inda,x(x) is a prime-power for any a ∈ G. Is it true that IndG(x) is a
prime-power?
However the answer to the above question turned out to be negative. Indeed, consider an abelian
group V acted on by A = S3, the symmetric group of degree 3 and take G = V A. Suppose x ∈ V is an
element such that C A(x) = 1. Then Inda,x(x) = |a| is a prime for every a ∈ A but IndG(x) = 6.
Thus, we modify our original question in the following way.
Let p be a prime. Let x ∈ G and suppose that Inda,x(x) is a p-power for any a ∈ G. Is it true that
IndG(x) is a p-power?