Graduate Program in Mathematics.Coşkun, Olcay.Sert, Gözde.2023-03-162023-03-162018.MATH 2018 S47https://digitalarchive.library.bogazici.edu.tr/handle/123456789/15305In this thesis, we investigate endo-trivial modules and their classification endo trivial modules over p-groups. Endo-trivial modules were introduced by Dade [1] and appear naturally in moduler representation theory. Several contributions towards the general aim of classifying those modules have already obtained and the classification of endo-trivial modules was completed in 2004 by Carlson and Thevenaz. Our aim is to see what are the endo-trivials modules over p-groups, especially over abelian groups.30 cm.Modules (Algebra)ix, 76 leaves ;