Step |
Hyp |
Ref |
Expression |
1 |
|
estrccat.c |
|
2 |
|
id |
|
3 |
1 2
|
estrcbas |
|
4 |
|
eqidd |
|
5 |
|
eqidd |
|
6 |
1
|
fvexi |
|
7 |
6
|
a1i |
|
8 |
|
biid |
|
9 |
|
f1oi |
|
10 |
|
f1of |
|
11 |
9 10
|
mp1i |
|
12 |
|
simpl |
|
13 |
|
eqid |
|
14 |
|
simpr |
|
15 |
|
eqid |
|
16 |
1 12 13 14 14 15 15
|
elestrchom |
|
17 |
11 16
|
mpbird |
|
18 |
|
simpl |
|
19 |
|
eqid |
|
20 |
|
simpr1l |
|
21 |
|
simpr1r |
|
22 |
|
eqid |
|
23 |
|
simpr31 |
|
24 |
1 18 13 20 21 22 15
|
elestrchom |
|
25 |
23 24
|
mpbid |
|
26 |
9 10
|
mp1i |
|
27 |
1 18 19 20 21 21 22 15 15 25 26
|
estrcco |
|
28 |
|
fcoi2 |
|
29 |
25 28
|
syl |
|
30 |
27 29
|
eqtrd |
|
31 |
|
simpr2l |
|
32 |
|
eqid |
|
33 |
|
simpr32 |
|
34 |
1 18 13 21 31 15 32
|
elestrchom |
|
35 |
33 34
|
mpbid |
|
36 |
1 18 19 21 21 31 15 15 32 26 35
|
estrcco |
|
37 |
|
fcoi1 |
|
38 |
35 37
|
syl |
|
39 |
36 38
|
eqtrd |
|
40 |
1 18 19 20 21 31 22 15 32 25 35
|
estrcco |
|
41 |
|
fco |
|
42 |
35 25 41
|
syl2anc |
|
43 |
1 18 13 20 31 22 32
|
elestrchom |
|
44 |
42 43
|
mpbird |
|
45 |
40 44
|
eqeltrd |
|
46 |
|
coass |
|
47 |
|
simpr2r |
|
48 |
|
eqid |
|
49 |
|
simpr33 |
|
50 |
1 18 13 31 47 32 48
|
elestrchom |
|
51 |
49 50
|
mpbid |
|
52 |
|
fco |
|
53 |
51 35 52
|
syl2anc |
|
54 |
1 18 19 20 21 47 22 15 48 25 53
|
estrcco |
|
55 |
1 18 19 20 31 47 22 32 48 42 51
|
estrcco |
|
56 |
46 54 55
|
3eqtr4a |
|
57 |
1 18 19 21 31 47 15 32 48 35 51
|
estrcco |
|
58 |
57
|
oveq1d |
|
59 |
40
|
oveq2d |
|
60 |
56 58 59
|
3eqtr4d |
|
61 |
3 4 5 7 8 17 30 39 45 60
|
iscatd2 |
|