Description: A simple graph is an undirected hypergraph. (Contributed by AV, 9-Feb-2018) (Revised by AV, 15-Oct-2020)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | usgruhgr | |- ( G e. USGraph -> G e. UHGraph ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | usgrupgr | |- ( G e. USGraph -> G e. UPGraph ) |
|
| 2 | upgruhgr | |- ( G e. UPGraph -> G e. UHGraph ) |
|
| 3 | 1 2 | syl | |- ( G e. USGraph -> G e. UHGraph ) |