Proof of Theorem cnco
| Step | Hyp | Ref
| Expression |
| 1 | | eqid 1884 |
. . . . 5
   |
| 2 | | eqid 1884 |
. . . . 5
   |
| 3 | 1, 2 | iscn 9034 |
. . . 4
  Top
Top     Cn          

           |
| 4 | 3 | 3adant2 895 |
. . 3
  Top Top
Top
  
 Cn                       |
| 5 | 4 | adantr 425 |
. 2
   Top
Top Top

 Cn   Cn        Cn          

           |
| 6 | | fco 4573 |
. . . . 5
                         |
| 7 | | eqid 1884 |
. . . . . . . 8
   |
| 8 | 7, 2 | cnf 9038 |
. . . . . . 7
  Top Top
 Cn           |
| 9 | 8 | 3expa 1067 |
. . . . . 6
   Top
Top
 Cn           |
| 10 | 9 | 3adantl1 1032 |
. . . . 5
   Top
Top Top
 Cn           |
| 11 | 1, 7 | cnf 9038 |
. . . . . . 7
  Top Top
 Cn           |
| 12 | 11 | 3expa 1067 |
. . . . . 6
   Top
Top
 Cn           |
| 13 | 12 | 3adantl3 1034 |
. . . . 5
   Top
Top Top
 Cn           |
| 14 | 6, 10, 13 | syl2an 503 |
. . . 4
    Top Top
Top
 Cn     Top
Top Top
 Cn              |
| 15 | 14 | ancoms 484 |
. . 3
    Top Top
Top
 Cn     Top
Top Top
 Cn              |
| 16 | 15 | anandis 570 |
. 2
   Top
Top Top

 Cn   Cn              |
| 17 | | simpll1 915 |
. . . . 5
    Top Top
Top   Cn   Cn     Top |
| 18 | | simpll2 916 |
. . . . 5
    Top Top
Top   Cn   Cn     Top |
| 19 | | simplrl 454 |
. . . . 5
    Top Top
Top   Cn   Cn      Cn    |
| 20 | | cnima 9044 |
. . . . . 6
   Top
Top  Cn        
  |
| 21 | | simpl2 880 |
. . . . . . 7
   Top
Top Top

 Cn   Cn    Top |
| 22 | | simpl3 881 |
. . . . . . 7
   Top
Top Top

 Cn   Cn    Top |
| 23 | | simprr 451 |
. . . . . . 7
   Top
Top Top

 Cn   Cn     Cn    |
| 24 | 21, 22, 23 | 3jca 1050 |
. . . . . 6
   Top
Top Top

 Cn   Cn     Top Top
 Cn     |
| 25 | 20, 24 | sylan 497 |
. . . . 5
    Top Top
Top   Cn   Cn         
  |
| 26 | | cnima 9044 |
. . . . 5
   Top
Top  Cn       
             |
| 27 | 17, 18, 19, 25, 26 | syl31anc 1103 |
. . . 4
    Top Top
Top   Cn   Cn                 |
| 28 | | cnvco 4145 |
. . . . . 6
        |
| 29 | 28 | imaeq1i 4261 |
. . . . 5
                |
| 30 | | imaco 4403 |
. . . . 5
                   |
| 31 | 29, 30 | eqtri 1908 |
. . . 4
                  |
| 32 | 27, 31 | syl5eqel 1975 |
. . 3
    Top Top
Top   Cn   Cn           
  |
| 33 | 32 | r19.21aiva 2176 |
. 2
   Top
Top Top

 Cn   Cn              |
| 34 | 5, 16, 33 | mpbir2and 802 |
1
   Top
Top Top

 Cn   Cn     
 Cn    |