Proof of Theorem cnco
| Step | Hyp | Ref
| Expression |
| 1 | | fco 3636 |
. . . . . 6
                         |
| 2 | | eqid 1475 |
. . . . . . . . 9
   |
| 3 | | eqid 1475 |
. . . . . . . . 9
   |
| 4 | 2, 3 | cnf 7762 |
. . . . . . . 8
  Top Top
 Cn           |
| 5 | 4 | 3expa 833 |
. . . . . . 7
   Top
Top
 Cn           |
| 6 | 5 | 3adantl1 803 |
. . . . . 6
   Top
Top Top
 Cn           |
| 7 | | eqid 1475 |
. . . . . . . . 9
   |
| 8 | 7, 2 | cnf 7762 |
. . . . . . . 8
  Top Top
 Cn           |
| 9 | 8 | 3expa 833 |
. . . . . . 7
   Top
Top
 Cn           |
| 10 | 9 | 3adantl3 805 |
. . . . . 6
   Top
Top Top
 Cn           |
| 11 | 1, 6, 10 | syl2an 454 |
. . . . 5
    Top Top
Top
 Cn     Top
Top Top
 Cn              |
| 12 | 11 | ancoms 436 |
. . . 4
    Top Top
Top
 Cn     Top
Top Top
 Cn              |
| 13 | 12 | anandis 512 |
. . 3
   Top
Top Top

 Cn   Cn              |
| 14 | | cnima 7767 |
. . . . . 6
   Top
Top  Cn       
             |
| 15 | | 3simp1 788 |
. . . . . . . 8
  Top Top
Top
Top |
| 16 | 15 | ad2antrr 404 |
. . . . . . 7
    Top Top
Top   Cn   Cn     Top |
| 17 | | 3simp2 789 |
. . . . . . . 8
  Top Top
Top
Top |
| 18 | 17 | ad2antrr 404 |
. . . . . . 7
    Top Top
Top   Cn   Cn     Top |
| 19 | | simprl 414 |
. . . . . . . 8
   Top
Top Top

 Cn   Cn     Cn    |
| 20 | 19 | adantr 389 |
. . . . . . 7
    Top Top
Top   Cn   Cn      Cn    |
| 21 | 16, 18, 20 | 3jca 819 |
. . . . . 6
    Top Top
Top   Cn   Cn      Top
Top  Cn     |
| 22 | | cnima 7767 |
. . . . . . 7
   Top
Top  Cn        
  |
| 23 | 17 | adantr 389 |
. . . . . . . 8
   Top
Top Top

 Cn   Cn    Top |
| 24 | | 3simp3 790 |
. . . . . . . . 9
  Top Top
Top
Top |
| 25 | 24 | adantr 389 |
. . . . . . . 8
   Top
Top Top

 Cn   Cn    Top |
| 26 | | simprr 415 |
. . . . . . . 8
   Top
Top Top

 Cn   Cn     Cn    |
| 27 | 23, 25, 26 | 3jca 819 |
. . . . . . 7
   Top
Top Top

 Cn   Cn     Top Top
 Cn     |
| 28 | 22, 27 | sylan 448 |
. . . . . 6
    Top Top
Top   Cn   Cn         
  |
| 29 | 14, 21, 28 | sylanc 471 |
. . . . 5
    Top Top
Top   Cn   Cn                 |
| 30 | | cnvco 3300 |
. . . . . . 7
        |
| 31 | | imaeq1 3401 |
. . . . . . 7
                         |
| 32 | 30, 31 | ax-mp 7 |
. . . . . 6
                |
| 33 | | imaco 3501 |
. . . . . 6
                   |
| 34 | 32, 33 | eqtr 1495 |
. . . . 5
                  |
| 35 | 29, 34 | syl5eqel 1552 |
. . . 4
    Top Top
Top   Cn   Cn           
  |
| 36 | 35 | r19.21aiva 1714 |
. . 3
   Top
Top Top

 Cn   Cn              |
| 37 | 13, 36 | jca 288 |
. 2
   Top
Top Top

 Cn   Cn                        |
| 38 | 7, 3 | iscn 7758 |
. . . 4
  Top
Top     Cn          

           |
| 39 | 38 | 3adant2 798 |
. . 3
  Top Top
Top
  
 Cn                       |
| 40 | 39 | adantr 389 |
. 2
   Top
Top Top

 Cn   Cn        Cn          

           |
| 41 | 37, 40 | mpbird 196 |
1
   Top
Top Top

 Cn   Cn     
 Cn    |