Description: Define the edge function (indexed edges) of a graph. (Contributed by AV, 18-Jan-2020) Use its index-independent form edgfid instead. (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | df-edgf | ⊢ .ef = Slot ; 1 8 |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | cedgf | ⊢ .ef | |
1 | c1 | ⊢ 1 | |
2 | c8 | ⊢ 8 | |
3 | 1 2 | cdc | ⊢ ; 1 8 |
4 | 3 | cslot | ⊢ Slot ; 1 8 |
5 | 0 4 | wceq | ⊢ .ef = Slot ; 1 8 |