2 papers
math.GT2020
The Effect of Singularization on the Euler Characteristic
Murilo A. de Jesus Zigart, Ketty A. de Rezende, Nivaldo G. Grulha +1
In this work, singular surfaces are obtained from smooth orientable closed surfaces by applying three basic simple loop operations, collapsing operation, zipping operation and doub…
math.DS2020
Homotopical Cancellation Theory for Gutierrez-Sotomayor Singular Flows
Dahisy V. S. Lima, S. A. Raminelli, K. A. de Rezende
In this article, we present a dynamical homotopical cancellation theory for Gutierrez-Sotomayor singular flows , GS-flows, on singular surfaces . This theory generalizes the…