Step |
Hyp |
Ref |
Expression |
1 |
|
dvres3a.j |
|
2 |
|
reldv |
|
3 |
|
recnprss |
|
4 |
3
|
ad2antrr |
|
5 |
|
simplr |
|
6 |
|
inss2 |
|
7 |
|
fssres |
|
8 |
5 6 7
|
sylancl |
|
9 |
|
rescom |
|
10 |
|
resres |
|
11 |
9 10
|
eqtri |
|
12 |
|
ffn |
|
13 |
|
fnresdm |
|
14 |
5 12 13
|
3syl |
|
15 |
14
|
reseq1d |
|
16 |
11 15
|
syl5eqr |
|
17 |
16
|
feq1d |
|
18 |
8 17
|
mpbid |
|
19 |
|
inss1 |
|
20 |
19
|
a1i |
|
21 |
4 18 20
|
dvbss |
|
22 |
|
dmres |
|
23 |
|
simprr |
|
24 |
23
|
ineq2d |
|
25 |
22 24
|
syl5eq |
|
26 |
21 25
|
sseqtrrd |
|
27 |
|
relssres |
|
28 |
2 26 27
|
sylancr |
|
29 |
|
dvfg |
|
30 |
29
|
ad2antrr |
|
31 |
30
|
ffund |
|
32 |
|
ssidd |
|
33 |
1
|
cnfldtopon |
|
34 |
|
simprl |
|
35 |
|
toponss |
|
36 |
33 34 35
|
sylancr |
|
37 |
|
dvres2 |
|
38 |
32 5 36 4 37
|
syl22anc |
|
39 |
|
funssres |
|
40 |
31 38 39
|
syl2anc |
|
41 |
28 40
|
eqtr3d |
|