Elliptic elements and circuits in suborbital graphs

Elliptic elements and circuits in suborbital graphs

We consider the action of a permutation group on a set in the spirit of the theory of permutation groups, and graph arising from this action in hyperbolic geometric terms. In this paper, we examine some relations between elliptic elements and circuits in graph for the normalizer of $Gamma$0(N) in PSL(2,$Bbb {R}$).

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