Step |
Hyp |
Ref |
Expression |
1 |
|
elfz2 |
|
2 |
|
3simpc |
|
3 |
2
|
adantr |
|
4 |
1 3
|
sylbi |
|
5 |
4
|
anim2i |
|
6 |
|
simpl |
|
7 |
6
|
anim2i |
|
8 |
7
|
ancomd |
|
9 |
|
zsubcl |
|
10 |
8 9
|
syl |
|
11 |
6
|
adantl |
|
12 |
|
simprr |
|
13 |
10 11 12
|
3jca |
|
14 |
5 13
|
syl |
|
15 |
14
|
3adant3 |
|
16 |
|
elfzel2 |
|
17 |
16
|
zred |
|
18 |
17
|
adantl |
|
19 |
|
zre |
|
20 |
19
|
adantr |
|
21 |
|
elfzelz |
|
22 |
21
|
zred |
|
23 |
22
|
adantl |
|
24 |
18 20 23
|
3jca |
|
25 |
|
simp1 |
|
26 |
|
readdcl |
|
27 |
26
|
3adant1 |
|
28 |
|
ltle |
|
29 |
25 27 28
|
syl2anc |
|
30 |
|
lesubadd2 |
|
31 |
29 30
|
sylibrd |
|
32 |
24 31
|
syl |
|
33 |
32
|
3impia |
|
34 |
|
elfzle2 |
|
35 |
34
|
3ad2ant2 |
|
36 |
15 33 35
|
jca32 |
|
37 |
|
elfz2 |
|
38 |
36 37
|
sylibr |
|