M
Maria Aparecida Soares Ruas
Researcher at Spanish National Research Council
Publications - 116
Citations - 1020
Maria Aparecida Soares Ruas is an academic researcher from Spanish National Research Council. The author has contributed to research in topics: Lipschitz continuity & Codimension. The author has an hindex of 16, co-authored 110 publications receiving 914 citations. Previous affiliations of Maria Aparecida Soares Ruas include Universidade Estadual de Maringá & University of São Paulo.
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Singular 4-Webs of Asymptotic Lines of Spacelike Surfaces in de Sitter 5-space
TL;DR: In this article, the authors studied the geometry of spacelike surfaces in de Sitter 5-space and defined invariants of the second fundamental form and considered their geometrical properties.
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Index of an implicit differential equation
TL;DR: In this article, the authors introduce the concept of the index of an implicit differential equation F(x, y, p) = 0, where F is a smooth function, p = dy, Fp = 0 and Fpp = 0 at an isolated singular point.
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On the simplicity of multigerms
TL;DR: In this article, the authors prove several results regarding the simplicity of germs and multigerms obtained via the operations of augmentation, simultaneous augmentation and concatenation and generalised concatenations, and give some results in the case where one of the branches is a non stable primitive germ.
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Determinacy of Determinantal Varieties
TL;DR: The notion of isolated determinantal singularities (EIDS) was introduced by Ebeling and Gusein-Zade as mentioned in this paper, and is defined by the vanishing of all the minors of a certain size of a $m\times n$-matrix.
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Mixed Bruce-Roberts numbers
TL;DR: In this paper, the Bruce-Roberts numbers were extended to the notion of sequence and Tjurina number of functions, and they were analyzed in terms of fundamental properties of these numbers.