Step |
Hyp |
Ref |
Expression |
1 |
|
elfzoel2 |
|
2 |
|
elfzoel1 |
|
3 |
1 2
|
zsubcld |
|
4 |
|
elfzoelz |
|
5 |
|
elfzoelz |
|
6 |
|
zsubcl |
|
7 |
4 5 6
|
syl2an |
|
8 |
|
dvdsabsb |
|
9 |
3 7 8
|
syl2an2 |
|
10 |
|
fzomaxdif |
|
11 |
|
fzo0dvdseq |
|
12 |
10 11
|
syl |
|
13 |
9 12
|
bitrd |
|
14 |
4
|
zcnd |
|
15 |
5
|
zcnd |
|
16 |
|
subcl |
|
17 |
14 15 16
|
syl2an |
|
18 |
17
|
abs00ad |
|
19 |
|
subeq0 |
|
20 |
14 15 19
|
syl2an |
|
21 |
18 20
|
bitrd |
|
22 |
13 21
|
bitrd |
|