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  • Research Article
  • Open Access

A degree theory for a class of perturbed Fredholm maps II

Fixed Point Theory and Applications20062006:27154

  • Received: 30 June 2005
  • Accepted: 24 October 2005
  • Published:


In a recent paper we gave a notion of degree for a class of perturbations of nonlinear Fredholm maps of index zero between real infinite dimensional Banach spaces. Our purpose here is to extend that notion in order to include the degree introduced by Nussbaum for local -condensing perturbations of the identity, as well as the degree for locally compact perturbations of Fredholm maps of index zero recently defined by the first and third authors.


  • Differential Geometry
  • Computational Biology
  • Degree Theory


Authors’ Affiliations

Dipartimento di Matematica Applicata "G. Sansone", Via S. Marta 3, Firenze, 50139, Italy
Dipartimento di Matematica "U. Dini", Viale G.B. Morgagni 67/A, Firenze, 50134, Italy


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© Pierluigi Benevieri et al. 2006

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