Acyclic graph
Definition
A graph is acyclic if it has no cycle.
Remarks
An acyclic graph is also called a forest. A connected acyclic graph is a tree. The path graphs and the graphs with no edges are acyclic. The cycle graphs are not. A finite acyclic graph with vertices and components has edges.
Explanations
L1 human
A graph is acyclic when you cannot go around any loop in it. Each edge then splits its piece of the graph in two when you delete it.
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- Every connected graph has a spanning tree 04XPQT2XTC
- Unique paths in trees 096B7Q5742
- Forest 09JP6G9FTA
- Prüfer sequence 09PV9JSY6E
- Trees are bipartite 0BN2A6EBYA
- Rooted tree 0C9J6W2A8A
- Spanning tree 0FQ5B8S1ZC
- Every finite tree with at least two vertices has a leaf 0H8Q4MANBD
- Cayley's formula 0M2SSGSYPE
- Tree 0MJ0JS72DZ
- A tree on n vertices has n − 1 edges 0VSNHTHK8T
- Minimum spanning tree 0Z367CGNRM