"Topics in Discrete Mathematics" is a comprehensive collection of scholarly articles that addresses selected topics in discrete mathematics. This book was published in honor of Professor Jarik Nesetril's 60th birthday and brings together works from leading experts in the field. The included contributions encompass both survey and research papers and cover a wide range of topics, including algebraic combinatorics, combinatorial number theory, game theory, Ramsey theory, as well as graph and hypergraph theory. The diversity of topics makes this book a valuable resource for students and professionals looking to engage with the latest developments in discrete mathematics. The careful selection of contributions ensures that readers receive both theoretical and application-oriented perspectives.