IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE, cilt.34, ss.305-312, 2010 (SCI-Expanded)
In this paper, we find the number of sides of circuits in suborbital graph for the normalizer of Gamma(0) (m) in PSL(2,R), where m will be of the form 2p(2), p is a prime and p equivalent to 1 (mod 4). In addition, we give a number theoretical result which says that the prime divisors p of 2u(2) +/- 2u + 1 are of the form p equivalent to 1 (mod 4).