16 citations · 19 across the 7 of their papers we have counts for
8 papers
The Oriented Chromatic Number of the Hexagonal Grid is 6
Antoni Lozano
The oriented chromatic number of a directed graph is the minimum order of an oriented graph to which has a homomorphism. The oriented chromatic number of a…
Trees whose even-degree vertices induce a path are antimagic
Antoni Lozano, Mercè Mora, Carlos Seara +1
An antimagic labeling a connected graph is a bijection from the set of edges to such that all vertex sums are pairwise distinct, where the vertex…
Caterpillars are Antimagic
Antoni Lozano, Mercè Mora, Carlos Seara +1
An antimagic labeling of a graph is an injection from to such that all vertex sums are pairwise distinct, where the vertex sum at vertex is th…
Caterpillars Have Antimagic Orientations
Antoni Lozano
An antimagic labeling of a directed graph with arcs is a bijection from the set of arcs of to such that all oriented vertex sums of vertices in are…
Antimagic Labelings of Caterpillars
Antoni Lozano, Mercè Mora, Carlos Seara
A -antimagic labeling of a graph is an injection from to such that all vertex sums are pairwise distinct, where the vertex sum at vertex …
Fast calculation of entropy with Zhang's estimator
Antoni Lozano, Bernardino Casas, Chris Bentz +1
Entropy is a fundamental property of a repertoire. Here, we present an efficient algorithm to estimate the entropy of types with the help of Zhang's estimator. The algorithm takes…
Distinguishing Tournaments with Small Label Classes
Antoni Lozano
A -distinguishing vertex (arc) labeling of a digraph is a vertex (arc) labeling using labels that is not preserved by any nontrivial automorphism. Let () be th…
Tile Packing Tomography is NP-hard
Marek Chrobak, Christoph Durr, Flavio Guinez +2
Discrete tomography deals with reconstructing finite spatial objects from lower dimensional projections and has applications for example in timetable design. In this paper we consi…