Description: A walk connects vertices. (Contributed by AV, 22-Feb-2021)
Ref | Expression | ||
---|---|---|---|
Hypothesis | wlkpvtx.v | |
|
Assertion | wlkpvtx | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wlkpvtx.v | |
|
2 | 1 | wlkp | |
3 | ffvelrn | |
|
4 | 3 | ex | |
5 | 2 4 | syl | |