Schmidt, Eric, authorHulpke, Alexander, advisorAchter, Jeff, committee memberCavalieri, Renzo, committee memberHarton, John, committee member2022-04-202022-04-202010https://hdl.handle.net/10217/234736Covers not scanned.Print version deaccessioned 2022.We prove some results about the structure of SL2(Z) and related groups. We define modular forms for this group and develop the basic theory. We then use the theory of lattices to construct examples of modular forms.masters thesesengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Modular groupsForms, ModularText