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Invariants of real singularities, pairs of germs and classification problems

Grant number:18/25157-3
Support Opportunities:Regular Research Grants
Start date: March 01, 2019
End date: February 28, 2021
Field of knowledge:Physical Sciences and Mathematics - Mathematics - Geometry and Topology
Principal Investigator:João Carlos Ferreira Costa
Grantee:João Carlos Ferreira Costa
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
City of the host institution:São José do Rio Preto

Abstract

The purpose of this work is to study importanttopics of Singularity theory such as nvariants, classification problem, finiteness theorems, stable maps, pairs of map germs (or divergent diagrams), among others. Such topics are interrelated with other areas of research, such as Differential Geometry, Topology, Dynamical System and Graph Theory. To develop this study, from local point of view, we will use as reference two equivalence relations: the topological equivalence (orC^0-A-equivalence) and the bi-Lipschitz equivalence. From these equivalence relations, we will investigate invariants, important properties, classifications, pairs of germs and also give comparisons with other classical equivalences. The project also addresses global aspects of interest in Singularity theory, such as the study of stable maps and their global invariants. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (5)
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
C. MENDES DE JESUS; E. BOIZAN BATISTA; J. C. F. COSTA. Stable Bi-Maps on Surfaces and Their Graphs. Trends in Computational and Applied Mathematics, v. 24, n. 2, p. 337-356, . (18/25157-3, 19/21181-0)
COSTA, J. C. F.; MARTINS, L. F.; NUNO-BALLESTEROS, J. J.. ON THE INDEX OF PRINCIPAL FOLIATIONS OF SURFACES IN R-3 WITH CORANK 1 SINGULARITIES. JOURNAL OF SINGULARITIES, v. 22, p. 16-pg., . (18/19610-7, 18/25157-3)
BATISTA, E. B.; COSTA, J. C. F.; MEZA-SARMIENTO, I. S.. TOPOLOGICAL CLASSIFICATION OF CIRCLE-VALUED SIMPLE MORSE-BOTT FUNCTIONS ON CLOSED ORIENTABLE SURFACES. JOURNAL OF SINGULARITIES, v. 25, p. 12-pg., . (18/25157-3, 19/21181-0)
BOIZAN BATISTA, ERICA; FERREIRA COSTA, JOAO CARLOS; JOSE NUNO-BALLESTEROS, JUAN. The Cone Structure Theorem. INTERNATIONAL MATHEMATICS RESEARCH NOTICES, v. 2021, n. 13, p. 9786-9801, . (18/25157-3)
BATISTA, ERICA BOIZAN; FERREIRA COSTA, JOAO CARLOS; NUNO-BALLESTEROS, JUAN J.. LOOPS IN GENERALIZED REEB GRAPHS ASSOCIATED TO STABLE CIRCLE-VALUED FUNCTIONS. JOURNAL OF SINGULARITIES, v. 22, p. 10-pg., . (18/25157-3)