Magero, Bunyasi Fidelius2016-02-232016-02-232015-12http://ir-library.ku.ac.ke/handle/123456789/14234A thesis submitted in partial fulfilment of the requirements for award of the Degree of Doctor of Philosophy (Pure Mathematics) in the School of Pure and Applied Sciences of Kenyatta University, December, 2015.enCycle Indices, Subdegrees and Suborbital Graphs of PSL(2,Q) Acting on the Cosets of Some of its SubgroupsThesis