Step |
Hyp |
Ref |
Expression |
1 |
|
shftfval.1 |
|
2 |
|
ovex |
|
3 |
|
vex |
|
4 |
2 3
|
breldm |
|
5 |
|
npcan |
|
6 |
5
|
eqcomd |
|
7 |
6
|
ancoms |
|
8 |
|
oveq1 |
|
9 |
8
|
rspceeqv |
|
10 |
4 7 9
|
syl2anr |
|
11 |
|
vex |
|
12 |
|
eqeq1 |
|
13 |
12
|
rexbidv |
|
14 |
11 13
|
elab |
|
15 |
10 14
|
sylibr |
|
16 |
2 3
|
brelrn |
|
17 |
16
|
adantl |
|
18 |
15 17
|
jca |
|
19 |
18
|
expl |
|
20 |
19
|
ssopab2dv |
|
21 |
|
df-xp |
|
22 |
20 21
|
sseqtrrdi |
|
23 |
1
|
dmex |
|
24 |
23
|
abrexex |
|
25 |
1
|
rnex |
|
26 |
24 25
|
xpex |
|
27 |
|
ssexg |
|
28 |
22 26 27
|
sylancl |
|
29 |
|
breq |
|
30 |
29
|
anbi2d |
|
31 |
30
|
opabbidv |
|
32 |
|
oveq2 |
|
33 |
32
|
breq1d |
|
34 |
33
|
anbi2d |
|
35 |
34
|
opabbidv |
|
36 |
|
df-shft |
|
37 |
31 35 36
|
ovmpog |
|
38 |
1 37
|
mp3an1 |
|
39 |
28 38
|
mpdan |
|