C. N. D. Silva

collaborators

2 papers

math.CO2019

Perfect digraphs

Cândida Nunes da Silva, Orlando Lee, Maycon Sambinelli

Let $D$ be a digraph. Given a set of vertices $S \subseteq V (D)$ , an $S$ -path partition $P$ of $D$ is a collection of paths of $D$ such that $\{V(P) \colon P \in \mathcal…

math.CO2017

Edge-magic labelings for constellations and armies of caterpillars

Márcia R. Cerioli, Cristina G. Fernandes, Orlando Lee +3

Let $G = (V, E)$ be an $n$ -vertex graph with $m$ edges. A function $f : V \cup E \to {1, \dots, n + m}$ is an edge-magic labeling of $G$ if $f$ is bijective and, for some int…