Description: The empty structure has no subspaces (for use with fvco4i ). (Contributed by Stefan O'Rear, 31-Mar-2015)
Ref | Expression | ||
---|---|---|---|
Assertion | 00lss | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | noel | |
|
2 | base0 | |
|
3 | eqid | |
|
4 | 2 3 | lssss | |
5 | ss0 | |
|
6 | 4 5 | syl | |
7 | 3 | lssn0 | |
8 | 7 | neneqd | |
9 | 6 8 | pm2.65i | |
10 | 1 9 | 2false | |
11 | 10 | eqriv | |