3 citations · 5 across the 6 of their papers we have counts for
7 papers
Effective and Robust Non-Prehensile Manipulation via Persistent Homology Guided Monte-Carlo Tree Search
Ewerton R. Vieira, Kai Gao, Daniel Nakhimovich +2
Performing object retrieval in real-world workspaces must tackle challenges including \emph{uncertainty} and \emph{clutter}. One option is to apply prehensile operations, which can…
Persistent Homology for Effective Non-Prehensile Manipulation
Ewerton R. Vieira, Daniel Nakhimovich, Kai Gao +3
This work explores the use of topological tools for achieving effective non-prehensile manipulation in cluttered, constrained workspaces. In particular, it proposes the use of pers…
Existence of periodic orbits for piecewise-smooth vector fields with sliding region via Conley theory
Angie T. S. Romero, Ewerton R. Vieira
The Conley theory has a tool to guarantee the existence of periodic trajectories in isolating neighborhoods of semi-dynamical systems. We prove that the positive trajectories gener…
Covering Action on Conley Theory
Dahisy V. S. Lima, Mariana R. da Silveira, Ewerton R. Vieira
In this paper, we apply Conley index theory in a covering space of an invariant set , possibly not isolated, in order to describe the dynamics in . More specifically, we cons…
Finiteness of homotopy groups related to the non-abelian tensor product
Raimundo Bastos, Noraí R. Rocco, Ewerton R. Vieira
By using finiteness related result of non-abelian tensor product we prove finiteness conditions for the homotopy groups in terms of the number of tensors. In particular, w…
Transition Matrix Theory
Ewerton Vieira, Robert Franzosa
In this article we present a unification of the theory of algebraic, singular, topological and directional transition matrices by introducing the (generalized) transition matrix wh…
Generalized Topological Transition Matrix
Robert Franzosa, Ketty A. de Rezende, Ewerton R. Vieira
This article represents a major step in the unification of the theory of algebraic, topological and singular transition matrices by introducing a definition which is a generalizati…