Step |
Hyp |
Ref |
Expression |
1 |
|
estrres.c |
|
2 |
|
estrres.b |
|
3 |
|
estrres.h |
|
4 |
|
estrres.x |
|
5 |
|
eqidd |
|
6 |
5
|
3mix1d |
|
7 |
|
fvex |
|
8 |
|
eltpg |
|
9 |
7 8
|
mp1i |
|
10 |
6 9
|
mpbird |
|
11 |
|
df-tp |
|
12 |
11
|
a1i |
|
13 |
12
|
dmeqd |
|
14 |
|
dmun |
|
15 |
14
|
a1i |
|
16 |
|
dmpropg |
|
17 |
2 3 16
|
syl2anc |
|
18 |
|
dmsnopg |
|
19 |
4 18
|
syl |
|
20 |
17 19
|
uneq12d |
|
21 |
13 15 20
|
3eqtrd |
|
22 |
1
|
dmeqd |
|
23 |
|
df-tp |
|
24 |
23
|
a1i |
|
25 |
21 22 24
|
3eqtr4d |
|
26 |
10 25
|
eleqtrrd |
|