Step |
Hyp |
Ref |
Expression |
1 |
|
3wlkd.p |
|
2 |
|
3wlkd.f |
|
3 |
|
3wlkd.s |
|
4 |
|
3wlkd.n |
|
5 |
|
3wlkd.e |
|
6 |
1 2 3 4 5
|
3wlkdlem9 |
|
7 |
1 2 3
|
3wlkdlem3 |
|
8 |
|
preq12 |
|
9 |
8
|
adantr |
|
10 |
9
|
sseq1d |
|
11 |
|
simplr |
|
12 |
|
simprl |
|
13 |
11 12
|
preq12d |
|
14 |
13
|
sseq1d |
|
15 |
|
preq12 |
|
16 |
15
|
adantl |
|
17 |
16
|
sseq1d |
|
18 |
10 14 17
|
3anbi123d |
|
19 |
7 18
|
syl |
|
20 |
6 19
|
mpbird |
|
21 |
1 2
|
3wlkdlem2 |
|
22 |
21
|
raleqi |
|
23 |
|
c0ex |
|
24 |
|
1ex |
|
25 |
|
2ex |
|
26 |
|
fveq2 |
|
27 |
|
fv0p1e1 |
|
28 |
26 27
|
preq12d |
|
29 |
|
2fveq3 |
|
30 |
28 29
|
sseq12d |
|
31 |
|
fveq2 |
|
32 |
|
oveq1 |
|
33 |
|
1p1e2 |
|
34 |
32 33
|
eqtrdi |
|
35 |
34
|
fveq2d |
|
36 |
31 35
|
preq12d |
|
37 |
|
2fveq3 |
|
38 |
36 37
|
sseq12d |
|
39 |
|
fveq2 |
|
40 |
|
oveq1 |
|
41 |
|
2p1e3 |
|
42 |
40 41
|
eqtrdi |
|
43 |
42
|
fveq2d |
|
44 |
39 43
|
preq12d |
|
45 |
|
2fveq3 |
|
46 |
44 45
|
sseq12d |
|
47 |
23 24 25 30 38 46
|
raltp |
|
48 |
22 47
|
bitri |
|
49 |
20 48
|
sylibr |
|