Description: First-order logic and set theory. (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypotheses | bnj1536.1 | ||
bnj1536.2 | |||
bnj1536.3 | |||
bnj1536.4 | |||
Assertion | bnj1536 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnj1536.1 | ||
2 | bnj1536.2 | ||
3 | bnj1536.3 | ||
4 | bnj1536.4 | ||
5 | fvreseq | ||
6 | 1 2 3 5 | syl21anc | |
7 | 4 6 | mpbird |