SPRINGERPLUS, vol.5, 2016 (SCI-Expanded)
We relate the connection between the sizes of circuits in suborbital graph for the normalizer of Gamma(0)(m) in PSL(2,R) and the congruence equations arising from related group action. We give a number theoretic result which says that all prime divisors of 3u(2) -/+ 3u + 1 for any integer u must be congruent to 1 (mod 3).