Description: Version of dtrucor2 with a disjoint variable condition, which does not require ax-13 (nor ax-4 , ax-5 , ax-7 , ax-12 ). (Contributed by BJ, 16-Jul-2019) (Proof modification is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypothesis | bj-dtrucor2v.1 | |
|
Assertion | bj-dtrucor2v | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bj-dtrucor2v.1 | |
|
2 | ax6ev | |
|
3 | 1 | necon2bi | |
4 | pm2.01 | |
|
5 | 3 4 | ax-mp | |
6 | 5 | nex | |
7 | 2 6 | pm2.24ii | |