Description: The walks of a fixed length as words are walks (in an undirected graph) as words. (Contributed by Alexander van der Vekens, 17-Jul-2018) (Revised by AV, 12-Apr-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | wwlkssswwlksn | |- ( N WWalksN G ) C_ ( WWalks ` G ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wwlkswwlksn | |- ( w e. ( N WWalksN G ) -> w e. ( WWalks ` G ) ) |
|
2 | 1 | ssriv | |- ( N WWalksN G ) C_ ( WWalks ` G ) |