Multi- $${\mathcal {K}}$$ -bi-Lipschitz equivalence in dimension two

Lev Birbrair1, Rodrigo Mendes2,3
1Departamento de Matemática, Universidade Federal do Ceará (UFC), Fortaleza, Brazil
2Instituto de ciências exatas e da natureza, Universidade de Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Acarape, Brazil
3Departament of Mathematics, Ben Gurion University of the Negev, Be’er Sheva, Israel

Tóm tắt

In this paper, we study Multi- $${\mathcal {K}}$$ -equivalence of multi-germs of functions on the plane, definable in a polynomially bounded o-minimal structure. As in Birbrair et al. (Annali SNS Pisa 17:81–92, 2017. https://doi.org/10.2422/2036-2145.201503_014 ), we partition the germ of the plane at origin into zones of arcs in such a way that it produces a non-Archimedean space (set of orders and width functions) compatible with a given multi-germ, encoding its asymptotic behaviour. Such a partition is called Multi-pizza. We show the existence, uniqueness and complete invariance of multi-pizzas with respect to the Multi- $${\mathcal {K}}$$ -bi-Lipschitz equivalence.

Tài liệu tham khảo

Birbrair, L., Fernandes, A.C.G.: Metric theory of semialgebraic curves. Rev. Mat. Complut. 13(2), 369–382 (2000) Birbrair, L., Fernandes, A., Gabrielov, A., Grandjean, V.: Lipschitz contact equivalence of function-germs in \({\mathbb{R} }^2\). Annali SNS Pisa 17, 81–92 (2017). https://doi.org/10.2422/2036-2145.201503_014 Birbrair, L., Fernandes, A., Costa, J.C., Ruas, M.: \({\cal{K} }\)-bi-Lipschitz equivalence of real function-germs. Proc. Am. Math. Soc. Estados Unidos 135, 1089–1095 (2007) Birbrair, L., Costa, J.C., Da Silva Sena Filho, E., Mendes, R.: Finiteness theorem for multi-\({\cal{K} }\)-bi-Lipschitz equivalence of map germs. Mathematische Nachrichten 291, 2381–2387 (2018) Ruas, M., Valette, G.: \(C^0\) and bi-Lipschitz K-equivalence. Math. Z. 269(1–2), 293–308 (2011) van den Dries, L., Speissegger, P.: O-minimal preparation theorems. Model theory and applications. 87–116, Quad. Mat., 11, Aracne, Rome (2002)