Step |
Hyp |
Ref |
Expression |
1 |
|
etransclem3.n |
|
2 |
|
etransclem3.c |
|
3 |
|
etransclem3.j |
|
4 |
|
etransclem3.4 |
|
5 |
|
0zd |
|
6 |
|
0zd |
|
7 |
1
|
nnzd |
|
8 |
7
|
adantr |
|
9 |
2 3
|
ffvelrnd |
|
10 |
9
|
elfzelzd |
|
11 |
7 10
|
zsubcld |
|
12 |
11
|
adantr |
|
13 |
6 8 12
|
3jca |
|
14 |
10
|
zred |
|
15 |
14
|
adantr |
|
16 |
8
|
zred |
|
17 |
|
simpr |
|
18 |
15 16 17
|
nltled |
|
19 |
16 15
|
subge0d |
|
20 |
18 19
|
mpbird |
|
21 |
|
elfzle1 |
|
22 |
9 21
|
syl |
|
23 |
1
|
nnred |
|
24 |
23 14
|
subge02d |
|
25 |
22 24
|
mpbid |
|
26 |
25
|
adantr |
|
27 |
13 20 26
|
jca32 |
|
28 |
|
elfz2 |
|
29 |
27 28
|
sylibr |
|
30 |
|
permnn |
|
31 |
29 30
|
syl |
|
32 |
31
|
nnzd |
|
33 |
3
|
elfzelzd |
|
34 |
4 33
|
zsubcld |
|
35 |
34
|
adantr |
|
36 |
|
elnn0z |
|
37 |
12 20 36
|
sylanbrc |
|
38 |
|
zexpcl |
|
39 |
35 37 38
|
syl2anc |
|
40 |
32 39
|
zmulcld |
|
41 |
5 40
|
ifclda |
|