Author : Krzysztof P. Rybakowski
Publisher : Springer Science & Business Media
ISBN 13 : 3642728332
Total Pages : 217 pages
Book Rating : 4.6/5 (427 download)
Book Synopsis The Homotopy Index and Partial Differential Equations by : Krzysztof P. Rybakowski
Download or read book The Homotopy Index and Partial Differential Equations written by Krzysztof P. Rybakowski and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The homotopy index theory was developed by Charles Conley for two sided flows on compact spaces. The homotopy or Conley index, which provides an algebraic-topologi cal measure of an isolated invariant set, is defined to be the ho motopy type of the quotient space N /N , where is a certain 1 2 1 2 compact pair, called an index pair. Roughly speaking, N1 isolates the invariant set and N2 is the "exit ramp" of N . 1 It is shown that the index is independent of the choice of the in dex pair and is invariant under homotopic perturbations of the flow. Moreover, the homotopy index generalizes the Morse index of a nQnde generate critical point p with respect to a gradient flow on a com pact manifold. In fact if the Morse index of p is k, then the homo topy index of the invariant set {p} is Ik - the homotopy type of the pointed k-dimensional unit sphere.