On an estimate of M. M. Djrbashyan's product B

In the mid-60s, by M. M. Djrbashyan proposed a new method for the definition and factorization of wide classes of functions meromorphic in the unit circle. These classes, which are denoted by N{ω}, have a complex structure and cover all meromorphic functions in the unit circle due to the fact that they depend on a functional parameter ω(x). They go to classes Nα in case ω(x)=(1-x)α, -1