Step |
Hyp |
Ref |
Expression |
1 |
|
axgroth4 |
|
2 |
|
3anass |
|
3 |
|
dfss2 |
|
4 |
|
elin |
|
5 |
3 4
|
imbi12i |
|
6 |
5
|
albii |
|
7 |
6
|
rexbii |
|
8 |
|
df-rex |
|
9 |
7 8
|
bitri |
|
10 |
9
|
ralbii |
|
11 |
|
df-ral |
|
12 |
10 11
|
bitri |
|
13 |
|
dfss2 |
|
14 |
|
vex |
|
15 |
14
|
difexi |
|
16 |
|
vex |
|
17 |
|
disjdifr |
|
18 |
15 16 17
|
brdom6disj |
|
19 |
18
|
orbi1i |
|
20 |
|
19.44v |
|
21 |
19 20
|
bitr4i |
|
22 |
13 21
|
imbi12i |
|
23 |
|
19.35 |
|
24 |
22 23
|
bitr4i |
|
25 |
|
grothprimlem |
|
26 |
25
|
mobii |
|
27 |
|
df-mo |
|
28 |
26 27
|
bitri |
|
29 |
28
|
ralbii |
|
30 |
|
df-ral |
|
31 |
29 30
|
bitri |
|
32 |
|
df-ral |
|
33 |
|
eldif |
|
34 |
|
grothprimlem |
|
35 |
34
|
rexbii |
|
36 |
|
df-rex |
|
37 |
35 36
|
bitri |
|
38 |
33 37
|
imbi12i |
|
39 |
|
pm5.6 |
|
40 |
38 39
|
bitri |
|
41 |
40
|
albii |
|
42 |
32 41
|
bitri |
|
43 |
31 42
|
anbi12i |
|
44 |
|
19.26 |
|
45 |
43 44
|
bitr4i |
|
46 |
45
|
orbi1i |
|
47 |
46
|
imbi2i |
|
48 |
47
|
exbii |
|
49 |
24 48
|
bitri |
|
50 |
49
|
albii |
|
51 |
12 50
|
anbi12i |
|
52 |
|
19.26 |
|
53 |
51 52
|
bitr4i |
|
54 |
53
|
anbi2i |
|
55 |
2 54
|
bitri |
|
56 |
55
|
exbii |
|
57 |
1 56
|
mpbi |
|