Step |
Hyp |
Ref |
Expression |
1 |
|
pclem.1 |
|
2 |
|
pclem.2 |
|
3 |
1 2
|
pcprecl |
|
4 |
3
|
simpld |
|
5 |
|
nn0re |
|
6 |
|
ltp1 |
|
7 |
|
peano2re |
|
8 |
|
ltnle |
|
9 |
7 8
|
mpdan |
|
10 |
6 9
|
mpbid |
|
11 |
4 5 10
|
3syl |
|
12 |
1
|
pclem |
|
13 |
|
peano2nn0 |
|
14 |
|
oveq2 |
|
15 |
14
|
breq1d |
|
16 |
|
oveq2 |
|
17 |
16
|
breq1d |
|
18 |
17
|
cbvrabv |
|
19 |
1 18
|
eqtri |
|
20 |
15 19
|
elrab2 |
|
21 |
20
|
simplbi2 |
|
22 |
4 13 21
|
3syl |
|
23 |
|
suprzub |
|
24 |
23 2
|
breqtrrdi |
|
25 |
24
|
3expia |
|
26 |
25
|
3adant2 |
|
27 |
12 22 26
|
sylsyld |
|
28 |
11 27
|
mtod |
|