Kırdar, Mehmet2016-01-082016-01-081994http://hdl.handle.net/11693/17550Ankara : The Department of Mathematics and the Institute of Engineering and Sciences of Bilkent University, 1994.Thesis (Master's) -- Bilkent University, 1994.Includes bibliographical refences.In this work, we summarized an approach to obstruction tlieory developed by E. Thomas. We gave some illustrative examples to demonstrate the method. These are : 2-plane fields on manifolds revi(iwing works of Thotnas, 3 and 4 fields on (4k-f3)-dimensional manifolds.vii, 43leavesEnglishinfo:eu-repo/semantics/openAccessPostnikov resolutioncohomology operationdistributionspanQA612.79 .K57 1994Icncludes bibliographical references (leaves 42-43).Obstruction theory.Thesis