---- > [!definition] Definition. ([[cycle]]) > A **cycle** in a [[network|directed network]] is a closed loop of edges with the arrows on each of the edges pointing the same way around the loop. > \ > A **cycle** in an [[network|undirected network]] is a closed loop of edges enclosing a [[graph face|face]], i.e., a path that ends where it begins. > [!basicexample] > - The world wide web forms a cyclic directed [[network]] (nodes are webpages, hyperlinks are directed edges between them). ---- #### ---- #### References > [!backlink] > ```dataview > TABLE rows.file.link as "Further Reading" > FROM [[]] > FLATTEN file.tags as Tag > WHERE Tag = "#definition" OR Tag = "#theorem" OR Tag = "#MOC" OR Tag = "#proposition" OR Tag = "#axiom" > GROUP BY Tag > ``` > [!frontlink] > ```dataview > TABLE rows.file.link as "Further Reading" > FROM outgoing([[]]) > FLATTEN file.tags as Tag > WHERE Tag = "#definition" OR Tag = "#theorem" OR Tag = "#MOC" OR Tag = "#proposition" OR Tag = "#axiom" > GROUP BY Tag > ```