Step |
Hyp |
Ref |
Expression |
1 |
|
elfzofz |
|
2 |
|
elfzuz2 |
|
3 |
|
elnn0uz |
|
4 |
|
zcn |
|
5 |
4
|
anim1i |
|
6 |
|
elnnnn0 |
|
7 |
5 6
|
sylibr |
|
8 |
7
|
expcom |
|
9 |
3 8
|
sylbir |
|
10 |
1 2 9
|
3syl |
|
11 |
10
|
impcom |
|
12 |
|
1nn0 |
|
13 |
12
|
a1i |
|
14 |
|
nnnn0 |
|
15 |
|
nnge1 |
|
16 |
13 14 15
|
3jca |
|
17 |
11 16
|
syl |
|
18 |
|
elfz2nn0 |
|
19 |
17 18
|
sylibr |
|
20 |
|
fzossrbm1 |
|
21 |
20
|
adantr |
|
22 |
|
fzossfz |
|
23 |
21 22
|
sstrdi |
|
24 |
|
simpr |
|
25 |
23 24
|
jca |
|
26 |
|
ssel2 |
|
27 |
|
elfzubelfz |
|
28 |
25 26 27
|
3syl |
|
29 |
19 28
|
jca |
|
30 |
|
elfzodifsumelfzo |
|
31 |
29 24 30
|
sylc |
|