Description: Technical lemma for bnj69 . This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypotheses | bnj978.1 | |
|
bnj978.2 | |
||
Assertion | bnj978 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnj978.1 | |
|
2 | bnj978.2 | |
|
3 | 1 2 | sylbir | |
4 | 3 | gen2 | |
5 | bnj253 | |
|
6 | 5 | imbi1i | |
7 | 6 | 2albii | |
8 | 3impexp | |
|
9 | 8 | 2albii | |
10 | 19.21v | |
|
11 | 19.21v | |
|
12 | 11 | imbi2i | |
13 | 10 12 | bitri | |
14 | 13 | albii | |
15 | 19.21v | |
|
16 | df-ral | |
|
17 | 16 | bicomi | |
18 | 17 | imbi2i | |
19 | 14 15 18 | 3bitri | |
20 | 7 9 19 | 3bitri | |
21 | 4 20 | mpbi | |
22 | dfss2 | |
|
23 | 22 | ralbii | |
24 | 21 23 | sylibr | |
25 | df-bnj19 | |
|
26 | 24 25 | sylibr | |