Transcription of Functional Analysis Lecture Notes - Michigan State University
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Functional Analysis (Math 920) Lecture Notes for Spring 08 Jeff SchenkerMichigan State UniversityE-mail and course informationPart 1. Hahn-Banach Theorem and ApplicationsLecture 1. Linear spaces and the Hahn Banach TheoremLecture 2. Geometric Hahn-Banach TheoremsLecture 3. Applications of Hahn-BanachPart 2. Banach SpacesLecture 4. Normed and Banach SpacesLecture 5. Noncompactness of the Ball and Uniform ConvexityLecture 6. Linear Functionals on a Banach SpaceLecture 7. Isometries of a Banach SpaceHomework IPart 3. Hilbert Spaces and ApplicationsLecture 8. Scalar Products and Hilbert SpacesLecture 9. Riesz-Frechet and Lax-Milgram TheoremsLecture 10. Geometry of a Hilbert space and Gram-Schmidt processPart 4. Locally Convex SpacesLecture 11. Locally Convex Spaces and Spaces of Test FunctionsLecture 12. Generation of a LCS by seminorms and Fr echet SpacesLecture 13. The dual of an LCSL ecture 14.
real valued function on Xwith the properties (1) p(ax) = ap(x) for all x2Xand a>0 (Positive homogeneity) (2) p(x+ y) p(x) + p(y) for all x;y2X(subadditivity). If ‘is a linear functional de ned on a linear subspace of Y and dominated by p, that is ‘(y) p(y) for all y2Y, then ‘can be extended to all of Xas a linear functional dominated
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