Step |
Hyp |
Ref |
Expression |
1 |
|
nfv |
|
2 |
|
nfra1 |
|
3 |
|
nfv |
|
4 |
1 2 3
|
nf3an |
|
5 |
|
nfv |
|
6 |
|
nfra2w |
|
7 |
|
nfv |
|
8 |
5 6 7
|
nf3an |
|
9 |
|
simpl |
|
10 |
9
|
a1i |
|
11 |
|
simpr |
|
12 |
11
|
a1i |
|
13 |
|
pm3.2an3 |
|
14 |
10 12 13
|
syl6c |
|
15 |
|
en3lp |
|
16 |
|
con3 |
|
17 |
14 15 16
|
syl6mpi |
|
18 |
|
eleq2 |
|
19 |
18
|
biimprcd |
|
20 |
12 19
|
syl6 |
|
21 |
|
pm3.2 |
|
22 |
10 20 21
|
syl10 |
|
23 |
|
en2lp |
|
24 |
|
con3 |
|
25 |
22 23 24
|
syl6mpi |
|
26 |
|
simp3 |
|
27 |
|
simp1 |
|
28 |
|
trel |
|
29 |
28
|
expd |
|
30 |
27 12 26 29
|
ee121 |
|
31 |
|
trel |
|
32 |
31
|
expd |
|
33 |
27 10 30 32
|
ee122 |
|
34 |
|
ralcom |
|
35 |
34
|
biimpi |
|
36 |
35
|
3ad2ant2 |
|
37 |
|
rspsbc2 |
|
38 |
26 33 36 37
|
ee121 |
|
39 |
|
equid |
|
40 |
|
sbceq1a |
|
41 |
39 40
|
ax-mp |
|
42 |
38 41
|
syl6ibr |
|
43 |
|
sbcoreleleq |
|
44 |
43
|
biimpd |
|
45 |
26 42 44
|
sylsyld |
|
46 |
|
3ornot23 |
|
47 |
46
|
ex |
|
48 |
17 25 45 47
|
ee222 |
|
49 |
8 48
|
alrimi |
|
50 |
4 49
|
alrimi |
|
51 |
|
dftr2 |
|
52 |
50 51
|
sylibr |
|