Step | Hyp | Ref
| Expression |
1 | | pw1fnf1o 5855 |
. . . . 5
Pw1Fn 1c 1c |
2 | | f1of1 5286 |
. . . . 5
Pw1Fn 1c 1c Pw1Fn 1c 1c |
3 | 1, 2 | ax-mp 8 |
. . . 4
Pw1Fn 1c 1c |
4 | | pw1ss1c 4158 |
. . . 4
1  1c |
5 | | f1ores 5300 |
. . . 4
 Pw1Fn 1c 1c
1  1c Pw1Fn 1     1    Pw1Fn  1     |
6 | 3, 4, 5 | mp2an 653 |
. . 3
Pw1Fn 1     1    Pw1Fn  1    |
7 | | df-ima 4727 |
. . . . 5
Pw1Fn  1   
 1   Pw1Fn   |
8 | | vex 2862 |
. . . . . . . . 9
 |
9 | 8 | elpw 3728 |
. . . . . . . 8
  1 1   |
10 | 8 | sspw1 4335 |
. . . . . . . 8
 1   
1    |
11 | | df-rex 2620 |
. . . . . . . . 9
 

1   
 1    |
12 | | df-pw 3724 |
. . . . . . . . . . . 12
    |
13 | 12 | abeq2i 2460 |
. . . . . . . . . . 11
    |
14 | 13 | anbi1i 676 |
. . . . . . . . . 10
  
1   1    |
15 | 14 | exbii 1582 |
. . . . . . . . 9
     1    
1    |
16 | 11, 15 | bitr2i 241 |
. . . . . . . 8
   
1    1   |
17 | 9, 10, 16 | 3bitri 262 |
. . . . . . 7
  1   1   |
18 | | df-rex 2620 |
. . . . . . . 8
 
1   Pw1Fn    1 
Pw1Fn    |
19 | | elpw1 4144 |
. . . . . . . . . . 11
 1        |
20 | 19 | anbi1i 676 |
. . . . . . . . . 10
  1 
Pw1Fn 
 

  Pw1Fn    |
21 | | r19.41v 2764 |
. . . . . . . . . 10
 
 
  Pw1Fn   

  Pw1Fn    |
22 | 20, 21 | bitr4i 243 |
. . . . . . . . 9
  1 
Pw1Fn 
    
Pw1Fn    |
23 | 22 | exbii 1582 |
. . . . . . . 8
    1  Pw1Fn    
    Pw1Fn    |
24 | | rexcom4 2878 |
. . . . . . . . 9
 
      Pw1Fn        
Pw1Fn    |
25 | | snex 4111 |
. . . . . . . . . . . 12
 
 |
26 | | breq1 4642 |
. . . . . . . . . . . 12
    Pw1Fn   Pw1Fn    |
27 | 25, 26 | ceqsexv 2894 |
. . . . . . . . . . 11
      Pw1Fn    Pw1Fn   |
28 | | vex 2862 |
. . . . . . . . . . . 12
 |
29 | 28 | brpw1fn 5854 |
. . . . . . . . . . 11
   Pw1Fn 1   |
30 | 27, 29 | bitri 240 |
. . . . . . . . . 10
      Pw1Fn  1   |
31 | 30 | rexbii 2639 |
. . . . . . . . 9
 
      Pw1Fn   
1   |
32 | 24, 31 | bitr3i 242 |
. . . . . . . 8
        Pw1Fn    1   |
33 | 18, 23, 32 | 3bitri 262 |
. . . . . . 7
 
1   Pw1Fn 

1   |
34 | 17, 33 | bitr4i 243 |
. . . . . 6
  1  1   Pw1Fn   |
35 | 34 | abbi2i 2464 |
. . . . 5
 1  
1   Pw1Fn   |
36 | 7, 35 | eqtr4i 2376 |
. . . 4
Pw1Fn  1    1  |
37 | | f1oeq3 5283 |
. . . 4
 Pw1Fn  1  
 1  Pw1Fn 1     1    Pw1Fn  1   Pw1Fn 1     1     1    |
38 | 36, 37 | ax-mp 8 |
. . 3
 Pw1Fn 1     1    Pw1Fn  1   Pw1Fn 1     1     1   |
39 | 6, 38 | mpbi 199 |
. 2
Pw1Fn 1     1     1  |
40 | | pw1fnex 5852 |
. . . 4
Pw1Fn  |
41 | | enpw1pw.1 |
. . . . . 6
 |
42 | 41 | pwex 4329 |
. . . . 5
  |
43 | 42 | pw1ex 4303 |
. . . 4
1   |
44 | 40, 43 | resex 5117 |
. . 3
Pw1Fn 1    |
45 | 44 | f1oen 6033 |
. 2
 Pw1Fn 1     1     1 1   1   |
46 | 39, 45 | ax-mp 8 |
1
1   1  |