Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Cycle (graph theory)?
Summarize this article for a 10 year old
In graph theory, a cycle in a graph is a non-empty trail in which only the first and last vertices are equal. A directed cycle in a directed graph is a non-empty directed trail in which only the first and last vertices are equal.
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