Step |
Hyp |
Ref |
Expression |
1 |
|
frrlem11.1 |
|
2 |
|
frrlem11.2 |
|
3 |
|
frrlem11.3 |
|
4 |
|
frrlem11.4 |
|
5 |
1 2 3
|
frrlem9 |
|
6 |
|
funres |
|
7 |
5 6
|
syl |
|
8 |
|
dmres |
|
9 |
|
df-fn |
|
10 |
8 9
|
mpbiran2 |
|
11 |
7 10
|
sylibr |
|
12 |
|
vex |
|
13 |
|
ovex |
|
14 |
12 13
|
fnsn |
|
15 |
11 14
|
jctir |
|
16 |
|
eldifn |
|
17 |
|
elinel2 |
|
18 |
16 17
|
nsyl |
|
19 |
|
disjsn |
|
20 |
18 19
|
sylibr |
|
21 |
|
fnun |
|
22 |
15 20 21
|
syl2an |
|
23 |
4
|
fneq1i |
|
24 |
22 23
|
sylibr |
|