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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ON THE DEGREE FOR ORIENTED QUASI-FREDHOLM MAPS: ITS UNIQUENESS AND ITS EFFECTIVE EXTENSION OF THE LERAY-SCHAUDER DEGREE

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Author(s):
Benevieri, Pierluigi [1, 2] ; Calamai, Alessandro [3] ; Furi, Massimo
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Matemat & Estat, BR-05508090 Sao Paulo, SP - Brazil
[2] Univ Firenze, Dipartimento Matemat & Informat, I-50139 Florence - Italy
[3] Univ Politecn Marche, Dipartimento Ingn Ind & Sci Matemat, I-60131 Ancona - Italy
Total Affiliations: 3
Document type: Journal article
Source: TOPOLOGICAL METHODS IN NONLINEAR ANALYSIS; v. 46, n. 1, p. 401-430, SEP 2015.
Web of Science Citations: 3
Abstract

In a previous paper, the first and third author developed a degree theory for oriented locally compact perturbations of C-1 Fredholm maps of index zero between real Banach spaces. In the spirit of a celebrated Amann-Weiss paper, we prove that this degree is unique if it is assumed to satisfy three axioms: Normalization, Additivity and Homotopy invariance. Taking into account that any compact vector field has a canonical orientation, from our uniqueness result we shall deduce that the above degree provides an effective extension of the Leray-Schauder degree. (AU)

FAPESP's process: 10/20727-4 - Existence and bifurcation of solutions of some nonlinear differential equations: a topological approach
Grantee:Pierluigi Benevieri
Support Opportunities: Regular Research Grants