Basis in nuclear Frechet spaces

Thesis Type: Post Graduate

Institution Of The Thesis: Middle East Technical University, Faculty of Arts and Sciences, Department of Mathematics, Turkey

Approval Date: 2006

Thesis Language: English

Student: Nazife Erkurşun



Existence of basis in locally convex space has been an important problem in functional analysis for more than 40 years. In this thesis the conditions for the existence of basis are examined. These thesis consist of three parts. The first part is about the exterior interpolative conditions. The second part deals with the inner interpolative conditions on nuclear frechet space. These are sufficient conditions on existence of basis. In the last part, it is shown that for a regular nuclear Köthe space the inner interpolative conditions are satisfied and moreover another type of inner interpolative conditions are introduced.