Abstract
This chapter is devoted to the concept of the topological degree and the fixed point index. With the aid of some fairly elementary facts from linear algebra and simplicial topology, we develop first the theory in the simple setting of Euclidean space. Then, using some of the techniques developed in Chapter II, we extend the index in R n to infinite dimensions, and establish the fixed point index theory for compact maps in arbitrary metric ANRs. As a special case we also obtain the Leray-Schauder degree for compact fields in normed linear spaces. The chapter ends with a number of applications.
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© 2003 Springer Science+Business Media New York
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Granas, A., Dugundji, J. (2003). Leray-Schauder Degree and Fixed Point Index. In: Fixed Point Theory. Springer Monographs in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-0-387-21593-8_5
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DOI: https://doi.org/10.1007/978-0-387-21593-8_5
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-1805-5
Online ISBN: 978-0-387-21593-8
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