Description: A Tarski class that contains A is a Tarski class. (Contributed by FL, 17-Apr-2011) (Proof shortened by Mario Carneiro, 21-Sep-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | tskmcl | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tskmval | |
|
2 | ssrab2 | |
|
3 | id | |
|
4 | grothtsk | |
|
5 | 3 4 | eleqtrrdi | |
6 | eluni2 | |
|
7 | 5 6 | sylib | |
8 | rabn0 | |
|
9 | 7 8 | sylibr | |
10 | inttsk | |
|
11 | 2 9 10 | sylancr | |
12 | 1 11 | eqeltrd | |
13 | fvprc | |
|
14 | 0tsk | |
|
15 | 13 14 | eqeltrdi | |
16 | 12 15 | pm2.61i | |