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PARALLEL VECTOR FIELDS AND GLOBAL INJECTIVITY IN TWO DIMENSIONS

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Author(s):
Braun, Francisco ; Llibre, Jaume
Total Authors: 2
Document type: Journal article
Source: PACIFIC JOURNAL OF MATHEMATICS; v. 333, n. 1, p. 18-pg., 2024-11-01.
Abstract

Let U be simply connected open subset of 2 , and let f : U -> 2 be a local diffeomorphism. We study the global injectivity of f using the planar vector fields of type annular, radial or strip. Our main result enables the unification of proofs for classical results on global injectivity, such as the Hadamard global invertibility theorem and the condition related to the connectedness of the levels sets of one of the coordinates of f . (AU)

FAPESP's process: 20/14498-4 - Global injectivity of maps and related topics
Grantee:Francisco Braun
Support Opportunities: Regular Research Grants
FAPESP's process: 19/07316-0 - Singularity theory and its applications to differential geometry, differential equations and computer vision
Grantee:Farid Tari
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 23/00376-2 - Global injectivity of maps and related topics
Grantee:Francisco Braun
Support Opportunities: Regular Research Grants