Acyclic subgraphs of digraphs with high chromatic number

This article likely presents research on graph theory, specifically focusing on the properties of directed graphs (digraphs) and their chromatic number. The research explores the relationship between the chromatic number of a digraph and the existence of acyclic subgraphs. The title suggests a focus on digraphs with a high chromatic number, implying an investigation into how the structure of these graphs influences the size or properties of their acyclic subgraphs. The source, ArXiv, indicates this is a pre-print or research paper.