| Step | Hyp | Ref
| Expression |
| 1 | | iunss 4561 |
. . . . . . 7
 
   |
| 2 | | eliun 4524 |
. . . . . . . . . . 11
 

  |
| 3 | 2 | imbi1i 339 |
. . . . . . . . . 10
  
           Scalar     
           Scalar      |
| 4 | | r19.23v 3023 |
. . . . . . . . . 10
 
            Scalar   
 
           Scalar      |
| 5 | 3, 4 | bitr4i 267 |
. . . . . . . . 9
  
           Scalar                 Scalar      |
| 6 | 5 | albii 1747 |
. . . . . . . 8
                Scalar       
           Scalar      |
| 7 | | df-ral 2917 |
. . . . . . . 8
 
            Scalar  
   
           Scalar      |
| 8 | | df-ral 2917 |
. . . . . . . . . 10
 
           Scalar     
           Scalar      |
| 9 | 8 | ralbii 2980 |
. . . . . . . . 9
 

           Scalar   
  
           Scalar      |
| 10 | | ralcom4 3224 |
. . . . . . . . 9
 
  
           Scalar       
           Scalar      |
| 11 | 9, 10 | bitri 264 |
. . . . . . . 8
 

           Scalar      
           Scalar      |
| 12 | 6, 7, 11 | 3bitr4i 292 |
. . . . . . 7
 
            Scalar  


           Scalar     |
| 13 | 1, 12 | anbi12i 733 |
. . . . . 6
   
            Scalar       
           Scalar      |
| 14 | | r19.26 3064 |
. . . . . 6
 
 
           Scalar     
 
           Scalar      |
| 15 | 13, 14 | bitr4i 267 |
. . . . 5
   
            Scalar    

            Scalar      |
| 16 | | eliin 4525 |
. . . . . 6
  
 

     |
| 17 | | iunocv.v |
. . . . . . . . . 10
     |
| 18 | | eqid 2622 |
. . . . . . . . . 10
         |
| 19 | | eqid 2622 |
. . . . . . . . . 10
Scalar  Scalar   |
| 20 | | eqid 2622 |
. . . . . . . . . 10
   Scalar      Scalar    |
| 21 | | inocv.o |
. . . . . . . . . 10
     |
| 22 | 17, 18, 19, 20, 21 | elocv 20012 |
. . . . . . . . 9
                Scalar      |
| 23 | | 3anan12 1051 |
. . . . . . . . 9
 
            Scalar      
           Scalar       |
| 24 | 22, 23 | bitri 264 |
. . . . . . . 8
     
           Scalar       |
| 25 | 24 | baib 944 |
. . . . . . 7
   
 
           Scalar       |
| 26 | 25 | ralbidv 2986 |
. . . . . 6
  
 

 
           Scalar       |
| 27 | 16, 26 | bitr2d 269 |
. . . . 5
  

            Scalar          |
| 28 | 15, 27 | syl5bb 272 |
. . . 4
    
            Scalar    
     |
| 29 | 28 | pm5.32i 669 |
. . 3
    
            Scalar      
     |
| 30 | 17, 18, 19, 20, 21 | elocv 20012 |
. . . 4
  
  
             Scalar      |
| 31 | | 3anan12 1051 |
. . . 4
  
             Scalar       
            Scalar       |
| 32 | 30, 31 | bitri 264 |
. . 3
  
    
            Scalar       |
| 33 | | elin 3796 |
. . 3
      

     |
| 34 | 29, 32, 33 | 3bitr4i 292 |
. 2
  
        |
| 35 | 34 | eqriv 2619 |
1
    
    |