Description: The covers relation implies inequality. (Contributed by NM, 13-Oct-2011)
Ref | Expression | ||
---|---|---|---|
Hypotheses | cvrne.b | |
|
cvrne.c | |
||
Assertion | cvrne | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cvrne.b | |
|
2 | cvrne.c | |
|
3 | eqid | |
|
4 | 1 3 2 | cvrlt | |
5 | eqid | |
|
6 | 5 3 | pltval | |
7 | 6 | simplbda | |
8 | 4 7 | syldan | |