N. Grulha

activity

20112026

most citedThe Bi-Lipschitz Equisingularity of Essentially Isolated Determinantal Singularities

10 citations · 21 across the 13 of their papers we have counts for

collaborators

Showing 2020Show all

3 papers · 1 filter

math.DS2020

Gutierrez-Sotomayor Flows on Singular Surfaces

Murilo A. J. Zigart, Ketty A. de Rezende, Nivaldo G. Grulha +1

In this work we address the realizability of a Lyapunov graph labeled with GS singularities, namely regular, cone, Whitney, double crossing and triple crossing singularities, as co…

math.GT2020

The geometrical information encoded by the Euler obstruction of a map

Nivaldo G. Grulha, Camila Ruiz, Hellen Santana

In this work we investigate the topological information captured by the Euler obstruction of a map, $f : (X, 0) \to (C^{2}, 0)$ , with $(X, 0)$ a germ of a complex $d$ -equidimens…

math.GT2020

Poincaré-Hopf Theorem for Isolated Determinantal Singularities

N. G. Grulha, M. S. Pereira, H. Santana

Let $X \subset P^{r}$ be a projective $d$ -variety with isolated determinantal singularities and $ω$ be a $1$ -form on $X$ with a finite number of singularities (in the stratif…