MATHEMATICAL METHODS IN THE APPLIED SCIENCES, cilt.42, sa.16, ss.5403-5415, 2019 (SCI-Expanded)
In this paper, the normalizers of Gamma(k)(0)(n), for k = 2 or 3, in the groups Gamma(k) of modular group Gamma are given by using the concept of Gamma(k) axes of the set of left cosets of Gamma(k)(0)(n), on which Gamma(k) acts transitively, in Gamma(k).