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Original Articles

The Number of Subgroups of PSL(2, Z) When Acting on Fp ∪ {∞}

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Pages 4276-4283 | Received 16 Jul 2005, Published online: 02 Dec 2008

REFERENCES

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  • Mushtaq , Q. ( 1983 ). Coset Diagrams for the Modular Group . D. Phil. Thesis , Oxford University .
  • Mushtaq , Q. ( 1989 ). The extended modular group acting on the projective line over a Galois field . Indian J. Pure Appl. Math. 20 ( 8 ): 755 – 760 .
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  • Mushtaq , Q. ( 1992 ). Parametrization of all homomorphisms from PGL(2, Z) into PGL(2, q) . Comm. Algebra 20 ( 4 ): 1023 – 1040 .
  • Stothers , W. W. ( 1977 ). The number of subgroups of given index in the modular group . Proc. Royal Soc. Edin. 78A : 105 – 112 .
  • Communicated by N. D. Gupta.

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