Description: A simple pseudograph with two vertices and one edge represented by a singleton word. (Contributed by AV, 9-Jan-2021)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | uspgr2v1e2w | |- ( ( A e. X /\ B e. Y ) -> <. { A , B } , <" { A , B } "> >. e. USPGraph ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | prex |  |-  { A , B } e. _V | |
| 2 | prid1g |  |-  ( A e. X -> A e. { A , B } ) | |
| 3 | prid2g |  |-  ( B e. Y -> B e. { A , B } ) | |
| 4 | uspgr1ewop |  |-  ( ( { A , B } e. _V /\ A e. { A , B } /\ B e. { A , B } ) -> <. { A , B } , <" { A , B } "> >. e. USPGraph ) | |
| 5 | 1 2 3 4 | mp3an3an |  |-  ( ( A e. X /\ B e. Y ) -> <. { A , B } , <" { A , B } "> >. e. USPGraph ) |