Step |
Hyp |
Ref |
Expression |
1 |
|
elfz1 |
|
2 |
|
elfz1 |
|
3 |
1 2
|
bi2anan9 |
|
4 |
|
an6 |
|
5 |
|
zre |
|
6 |
|
zre |
|
7 |
5 6
|
anim12i |
|
8 |
|
zre |
|
9 |
|
zre |
|
10 |
8 9
|
anim12i |
|
11 |
|
le2add |
|
12 |
7 10 11
|
syl2an |
|
13 |
12
|
impr |
|
14 |
13
|
3adantr3 |
|
15 |
14
|
adantlr |
|
16 |
|
zre |
|
17 |
|
zre |
|
18 |
16 17
|
anim12i |
|
19 |
|
le2add |
|
20 |
10 18 19
|
syl2anr |
|
21 |
20
|
impr |
|
22 |
21
|
3adantr2 |
|
23 |
22
|
adantll |
|
24 |
|
zaddcl |
|
25 |
|
zaddcl |
|
26 |
|
zaddcl |
|
27 |
|
elfz |
|
28 |
24 25 26 27
|
syl3an |
|
29 |
28
|
3expb |
|
30 |
29
|
ancoms |
|
31 |
30
|
3ad2antr1 |
|
32 |
15 23 31
|
mpbir2and |
|
33 |
32
|
ex |
|
34 |
33
|
an4s |
|
35 |
4 34
|
syl5bi |
|
36 |
3 35
|
sylbid |
|