Step |
Hyp |
Ref |
Expression |
1 |
|
bnj1098.1 |
|
2 |
|
3anrev |
|
3 |
|
df-3an |
|
4 |
2 3
|
bitri |
|
5 |
|
simpr |
|
6 |
1
|
bnj923 |
|
7 |
6
|
adantr |
|
8 |
|
elnn |
|
9 |
5 7 8
|
syl2anc |
|
10 |
9
|
anim1i |
|
11 |
4 10
|
sylbi |
|
12 |
|
nnsuc |
|
13 |
11 12
|
syl |
|
14 |
|
df-rex |
|
15 |
14
|
imbi2i |
|
16 |
|
19.37v |
|
17 |
15 16
|
bitr4i |
|
18 |
13 17
|
mpbi |
|
19 |
|
ancr |
|
20 |
18 19
|
bnj101 |
|
21 |
|
vex |
|
22 |
21
|
bnj216 |
|
23 |
22
|
ad2antlr |
|
24 |
|
simpr2 |
|
25 |
|
3simpc |
|
26 |
25
|
ancomd |
|
27 |
26
|
adantl |
|
28 |
|
nnord |
|
29 |
|
ordtr1 |
|
30 |
27 7 28 29
|
4syl |
|
31 |
23 24 30
|
mp2and |
|
32 |
|
simplr |
|
33 |
31 32
|
jca |
|
34 |
20 33
|
bnj1023 |
|