Step |
Hyp |
Ref |
Expression |
1 |
|
eluzel2 |
|
2 |
1
|
adantr |
|
3 |
|
eluzelz |
|
4 |
|
nn0z |
|
5 |
|
zaddcl |
|
6 |
3 4 5
|
syl2an |
|
7 |
3
|
adantr |
|
8 |
2 6 7
|
3jca |
|
9 |
|
eluzle |
|
10 |
9
|
adantr |
|
11 |
|
nn0ge0 |
|
12 |
11
|
adantl |
|
13 |
|
eluzelre |
|
14 |
|
nn0re |
|
15 |
|
addge01 |
|
16 |
13 14 15
|
syl2an |
|
17 |
12 16
|
mpbid |
|
18 |
10 17
|
jca |
|
19 |
|
elfz2 |
|
20 |
8 18 19
|
sylanbrc |
|
21 |
|
fzosplit |
|
22 |
20 21
|
syl |
|