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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2023.tde-11042023-080805
Document
Author
Full name
Amanda Dias Falqueto
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2023
Supervisor
Committee
Tari, Farid (President)
Costa, João Carlos Ferreira
Grulha Junior, Nivaldo de Góes
Okamoto, Bruna Oréfice
Title in Portuguese
Germes de aplicações k-dobras e simetrias ocultas de curvas no plano euclidiano
Keywords in Portuguese
Germes
K-dobras
Simetrias.
Singularidades
Abstract in Portuguese
O objetivo deste trabalho é estudar as singularidades locais dos germes de aplicações k-dobras para k 3 e derivar delas simetrias ocultas de curvas no plano euclidiano. Primeiramente, utilizamos o Método da Transversal Completa para classificar as singularidades A -simples dos germes C,0 C 2 ,0. Em seguida, provamos que todas estas singularidades podem ser realizadas pelas aplicações k-dobras e que qualquer aplicação k-dobra pode ter uma singularidade A -simples, o que não ocorre no caso de superfícies, conforme provado em (PEÑAFORT SANCHIS; TARI, 2023). Por fim, provamos que as singularidades dos germes de k-dobras revelam informações a respeito da simetria da curva.
Title in English
On k-folding map-germs and hidden symmetries of curves in the euclidean plane.
Keywords in English
Germs
K-folding maps
Singularities
Symmetries.
Abstract in English
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.
 
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Publishing Date
2023-05-11
 
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