Önal, Meltem2016-07-012016-07-012002http://hdl.handle.net/11693/30101Cataloged from PDF version of article.In this thesis, we study the relation between connectedness and complete intersections. We describe the concept of connectedness in codimension k. We also study the basic facts about Cohen-Macaulay rings, and give some applications about these rings and complete intersections. Finally, we show that certain rational curves of degree ≥ 4 in the projective 3-space are settheoretical complete intersections in all prime characteristics p > 0.vi, 56 leaves, illustrations, 30 cmEnglishinfo:eu-repo/semantics/openAccessConnectedness in codimension kCohen-Macaulay ringssettheoretical and ideal-theoretical complete intersectionscharacteristic p > 0QA251.38 .O54 2002Cohen-Macaulay rings.ThesisBILKUTUPB067576