Step |
Hyp |
Ref |
Expression |
1 |
|
reex |
|
2 |
1
|
a1i |
|
3 |
|
i1ff |
|
4 |
3
|
adantl |
|
5 |
|
ressxr |
|
6 |
|
fss |
|
7 |
4 5 6
|
sylancl |
|
8 |
|
simpll |
|
9 |
|
iccssxr |
|
10 |
|
fss |
|
11 |
8 9 10
|
sylancl |
|
12 |
|
simplr |
|
13 |
|
fss |
|
14 |
12 9 13
|
sylancl |
|
15 |
|
xrletr |
|
16 |
15
|
adantl |
|
17 |
2 7 11 14 16
|
caoftrn |
|
18 |
|
simplr |
|
19 |
|
simprl |
|
20 |
|
simprr |
|
21 |
|
itg2ub |
|
22 |
18 19 20 21
|
syl3anc |
|
23 |
22
|
expr |
|
24 |
17 23
|
syld |
|
25 |
24
|
ancomsd |
|
26 |
25
|
exp4b |
|
27 |
26
|
com23 |
|
28 |
27
|
3impia |
|
29 |
28
|
ralrimiv |
|
30 |
|
simp1 |
|
31 |
|
itg2cl |
|
32 |
31
|
3ad2ant2 |
|
33 |
|
itg2leub |
|
34 |
30 32 33
|
syl2anc |
|
35 |
29 34
|
mpbird |
|