11. Scene elements are dependency and a directed acyclic graph. 12. Electronic circuits themselves are not necessarily acyclic or directed. 13. A Java 3D scene graph is a directed acyclic graph ( DAG ). 14. An acyclic group is a group all of whose reduced integral homology vanishes. 15. Usually toluene, dioxane, tetrahydrofuran or acyclic dialkylethers are employed as solvents. 16. Lists, Trees and Directed Acyclic Graphs are other possible and common alternatives. 17. The problem of satisfiability on the class of binary acyclic problem is tractable. 18. Undirected graphs of bounded acyclic chromatic number also have bounded oriented chromatic number. 19. There are three natural examples of acyclic classes, although doubtless others exist. 20. Instead this new structure that emerges is known as a directed acyclic graph.
