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On k-folding map-germs and hidden symmetries of curves in the euclidean plane.

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Author(s):
Amanda Dias Falqueto
Total Authors: 1
Document type: Master's Dissertation
Press: São Carlos.
Institution: Universidade de São Paulo (USP). Instituto de Ciências Matemáticas e de Computação (ICMC/SB)
Defense date:
Examining board members:
Farid Tari; João Carlos Ferreira Costa; Nivaldo de Góes Grulha Junior; Bruna Oréfice Okamoto
Advisor: Farid Tari
Abstract

The aim of this work is to study the local singularities of germs of k-folds for k 3 and derive from them hidden symmetries of curves in the Euclidean plane. We used the Complete Transversal Method in order to classify the A -simple singularities of map-germs C,0 C 2 ,0. We then prove that all the simple singularities of such germs can be realised by k-folding maps and that any k-folding map-germ can have an A -simple singularity. This does not occur in the case of surfaces, as proved in (PEÑAFORT SANCHIS; TARI, 2023). Finally, we proved that the singularities of k-folding map-germs reveal information about the local symmetry of the curve. (AU)

FAPESP's process: 21/02932-4 - On k-folding map-germs and hidden symmetries of curves in the Euclidean plane
Grantee:Amanda Dias Falqueto
Support Opportunities: Scholarships in Brazil - Master