Step |
Hyp |
Ref |
Expression |
1 |
|
ballotth.m |
|
2 |
|
ballotth.n |
|
3 |
|
ballotth.o |
|
4 |
|
ballotth.p |
|
5 |
|
ballotth.f |
|
6 |
|
ballotth.e |
|
7 |
|
eldif |
|
8 |
|
df-or |
|
9 |
|
pm3.24 |
|
10 |
9
|
a1bi |
|
11 |
8 10
|
bitr4i |
|
12 |
1 2 3 4 5 6
|
ballotleme |
|
13 |
12
|
notbii |
|
14 |
13
|
anbi2i |
|
15 |
|
ianor |
|
16 |
15
|
anbi2i |
|
17 |
|
andi |
|
18 |
14 16 17
|
3bitri |
|
19 |
|
fz1ssfz0 |
|
20 |
19
|
a1i |
|
21 |
20
|
sseld |
|
22 |
21
|
imdistani |
|
23 |
|
simpl |
|
24 |
|
elfzelz |
|
25 |
24
|
adantl |
|
26 |
1 2 3 4 5 23 25
|
ballotlemfelz |
|
27 |
26
|
zred |
|
28 |
27
|
sbimi |
|
29 |
|
sban |
|
30 |
|
sbv |
|
31 |
|
clelsb3 |
|
32 |
30 31
|
anbi12i |
|
33 |
29 32
|
bitri |
|
34 |
|
nfv |
|
35 |
|
fveq2 |
|
36 |
35
|
eleq1d |
|
37 |
34 36
|
sbiev |
|
38 |
28 33 37
|
3imtr3i |
|
39 |
22 38
|
syl |
|
40 |
|
0red |
|
41 |
39 40
|
lenltd |
|
42 |
41
|
rexbidva |
|
43 |
|
rexnal |
|
44 |
42 43
|
bitrdi |
|
45 |
44
|
pm5.32i |
|
46 |
11 18 45
|
3bitr4i |
|
47 |
7 46
|
bitri |
|