University of Isfahan Transactions on Combinatorics 2251-8657 14 1 2024 01 20 Line graphs of directed graphs I 1 10 28073 10.22108/toc.2023.137205.2057 EN Vaidyanathan Sivaraman Department of Mathematics and Statistics, Mississippi State University Mississippi State, MS 39762, USA Daniel Slilaty Department of Mathematics and Statistics, Wright State University Dayton, OH 45435, USA Journal Article 2023 03 28 We determine the forbidden induced subgraphs for the intersection of the classes of chordal bipartite graphs and line graphs of acyclic directed graphs. This is a first step towards finding the forbidden induced subgraphs for the class of line graphs of directed graphs. line graph Directed graph hereditary class https://toc.ui.ac.ir/article_28073_7d9a4847b0a7732e2e15c14819a63f95.pdf