| Step | Hyp | Ref
| Expression |
| 1 | | ralnex 2992 |
. . . . 5
 

   ![]. ].](_drbrack.gif)
      ![]. ].](_drbrack.gif)   |
| 2 | | vex 3203 |
. . . . . . . 8
 |
| 3 | | sbcng 3476 |
. . . . . . . 8
  

  ![]. ].](_drbrack.gif)    |
| 4 | 2, 3 | ax-mp 5 |
. . . . . . 7
     ![]. ].](_drbrack.gif)   |
| 5 | 4 | bicomi 214 |
. . . . . 6
   ![]. ].](_drbrack.gif)     |
| 6 | 5 | ralbii 2980 |
. . . . 5
 

   ![]. ].](_drbrack.gif)
        |
| 7 | 1, 6 | bitr3i 266 |
. . . 4
       ![]. ].](_drbrack.gif)
        |
| 8 | | df-rab 2921 |
. . . . . . 7

      |
| 9 | 8 | eleq2i 2693 |
. . . . . 6
         |
| 10 | | df-sbc 3436 |
. . . . . . 7
   ![]. ].](_drbrack.gif)  
      |
| 11 | | sbcan 3478 |
. . . . . . . 8
   ![]. ].](_drbrack.gif)  
   ![]. ].](_drbrack.gif)
     |
| 12 | | sbcel1v 3495 |
. . . . . . . . 9
   ![]. ].](_drbrack.gif)
  |
| 13 | 12 | anbi1i 731 |
. . . . . . . 8
    ![]. ].](_drbrack.gif)
  

     |
| 14 | 11, 13 | bitri 264 |
. . . . . . 7
   ![]. ].](_drbrack.gif)  

     |
| 15 | 10, 14 | bitr3i 266 |
. . . . . 6
           |
| 16 | 9, 15 | bitri 264 |
. . . . 5
         |
| 17 | 16 | simprbi 480 |
. . . 4
       |
| 18 | 7, 17 | mprgbir 2927 |
. . 3


    ![]. ].](_drbrack.gif)  |
| 19 | | bnj110.1 |
. . . . . . . . 9
 |
| 20 | 19 | rabex 4813 |
. . . . . . . 8

  |
| 21 | 20 | biantrur 527 |
. . . . . . 7

      |
| 22 | | rexnal 2995 |
. . . . . . . 8
     |
| 23 | | rabn0 3958 |
. . . . . . . . 9
  

  |
| 24 | | ssrab2 3687 |
. . . . . . . . . 10


 |
| 25 | 24 | biantrur 527 |
. . . . . . . . 9
  
        |
| 26 | 23, 25 | bitr3i 266 |
. . . . . . . 8
          |
| 27 | 22, 26 | bitr3i 266 |
. . . . . . 7
          |
| 28 | | fri 5076 |
. . . . . . 7
    
  
     

         |
| 29 | 21, 27, 28 | syl2anb 496 |
. . . . . 6
   
    

     |
| 30 | | eqid 2622 |
. . . . . . . 8

 
  |
| 31 | 30 | bnj23 30784 |
. . . . . . 7
 

  

     ![]. ].](_drbrack.gif)    |
| 32 | | df-ral 2917 |
. . . . . . . . . 10
 
   
 ![]. ].](_drbrack.gif) 
        ![]. ].](_drbrack.gif)     |
| 33 | 32 | sbcbii 3491 |
. . . . . . . . 9
   ![]. ].](_drbrack.gif) 
   
 ![]. ].](_drbrack.gif) 
  ![]. ].](_drbrack.gif)         ![]. ].](_drbrack.gif)     |
| 34 | | sbcal 3485 |
. . . . . . . . . 10
   ![]. ].](_drbrack.gif)   
  
  ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)     
 ![]. ].](_drbrack.gif)     |
| 35 | | sbcimg 3477 |
. . . . . . . . . . . . 13
  
 ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)  
   ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)      |
| 36 | 2, 35 | ax-mp 5 |
. . . . . . . . . . . 12
   ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)  
   ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)     |
| 37 | | nfv 1843 |
. . . . . . . . . . . . . . 15

 |
| 38 | 37 | sbcgf 3501 |
. . . . . . . . . . . . . 14
  
 ![]. ].](_drbrack.gif)
   |
| 39 | 2, 38 | ax-mp 5 |
. . . . . . . . . . . . 13
   ![]. ].](_drbrack.gif)
  |
| 40 | | sbcimg 3477 |
. . . . . . . . . . . . . . 15
  
 ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif) 
   ![]. ].](_drbrack.gif)  
  ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)     |
| 41 | 2, 40 | ax-mp 5 |
. . . . . . . . . . . . . 14
   ![]. ].](_drbrack.gif)    
 ![]. ].](_drbrack.gif) 
   ![]. ].](_drbrack.gif)  
  ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)    |
| 42 | | sbcbr2g 4710 |
. . . . . . . . . . . . . . . . 17
  
 ![]. ].](_drbrack.gif)  
  
 ![]_ ]_](_urbrack.gif)    |
| 43 | 2, 42 | ax-mp 5 |
. . . . . . . . . . . . . . . 16
   ![]. ].](_drbrack.gif)  
    ![]_ ]_](_urbrack.gif)   |
| 44 | | csbvarg 4003 |
. . . . . . . . . . . . . . . . . 18
   ![]_ ]_](_urbrack.gif)   |
| 45 | 2, 44 | ax-mp 5 |
. . . . . . . . . . . . . . . . 17
  ![]_ ]_](_urbrack.gif)  |
| 46 | 45 | breq2i 4661 |
. . . . . . . . . . . . . . . 16
     ![]_ ]_](_urbrack.gif)
    |
| 47 | 43, 46 | bitri 264 |
. . . . . . . . . . . . . . 15
   ![]. ].](_drbrack.gif)  
    |
| 48 | | nfsbc1v 3455 |
. . . . . . . . . . . . . . . . 17
  
 ![]. ].](_drbrack.gif)  |
| 49 | 48 | sbcgf 3501 |
. . . . . . . . . . . . . . . 16
  
 ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)    |
| 50 | 2, 49 | ax-mp 5 |
. . . . . . . . . . . . . . 15
   ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)   |
| 51 | 47, 50 | imbi12i 340 |
. . . . . . . . . . . . . 14
    ![]. ].](_drbrack.gif)   
 ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif) 
     ![]. ].](_drbrack.gif)    |
| 52 | 41, 51 | bitri 264 |
. . . . . . . . . . . . 13
   ![]. ].](_drbrack.gif)    
 ![]. ].](_drbrack.gif) 
     ![]. ].](_drbrack.gif)    |
| 53 | 39, 52 | imbi12i 340 |
. . . . . . . . . . . 12
    ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)      ![]. ].](_drbrack.gif)  

     ![]. ].](_drbrack.gif)     |
| 54 | 36, 53 | bitri 264 |
. . . . . . . . . . 11
   ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)  

     ![]. ].](_drbrack.gif)     |
| 55 | 54 | albii 1747 |
. . . . . . . . . 10
     ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)  
        ![]. ].](_drbrack.gif)     |
| 56 | 34, 55 | bitri 264 |
. . . . . . . . 9
   ![]. ].](_drbrack.gif)   
  
  ![]. ].](_drbrack.gif)         
 ![]. ].](_drbrack.gif)     |
| 57 | 33, 56 | bitri 264 |
. . . . . . . 8
   ![]. ].](_drbrack.gif) 
   
 ![]. ].](_drbrack.gif) 
        ![]. ].](_drbrack.gif)     |
| 58 | | bnj110.2 |
. . . . . . . . 9
     
 ![]. ].](_drbrack.gif)    |
| 59 | 58 | sbcbii 3491 |
. . . . . . . 8
   ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif) 
     ![]. ].](_drbrack.gif)    |
| 60 | | df-ral 2917 |
. . . . . . . 8
 
   
 ![]. ].](_drbrack.gif) 
        ![]. ].](_drbrack.gif)     |
| 61 | 57, 59, 60 | 3bitr4i 292 |
. . . . . . 7
   ![]. ].](_drbrack.gif)     
 ![]. ].](_drbrack.gif)    |
| 62 | 31, 61 | sylibr 224 |
. . . . . 6
 

  
  ![]. ].](_drbrack.gif)   |
| 63 | 29, 62 | bnj31 30785 |
. . . . 5
   
      ![]. ].](_drbrack.gif)   |
| 64 | | nfv 1843 |
. . . . . . . 8
     |
| 65 | | nfsbc1v 3455 |
. . . . . . . . 9
  
 ![]. ].](_drbrack.gif)  |
| 66 | | nfsbc1v 3455 |
. . . . . . . . 9
  
 ![]. ].](_drbrack.gif)  |
| 67 | 65, 66 | nfim 1825 |
. . . . . . . 8
     ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)   |
| 68 | | sbceq1a 3446 |
. . . . . . . . 9
    ![]. ].](_drbrack.gif)    |
| 69 | | sbceq1a 3446 |
. . . . . . . . 9
    ![]. ].](_drbrack.gif)    |
| 70 | 68, 69 | imbi12d 334 |
. . . . . . . 8
       ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)     |
| 71 | 64, 67, 70 | cbvral 3167 |
. . . . . . 7
 
 

   ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)    |
| 72 | | elrabi 3359 |
. . . . . . . . 9
     |
| 73 | 72 | imim1i 63 |
. . . . . . . 8
     ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)         ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)     |
| 74 | 73 | ralimi2 2949 |
. . . . . . 7
 
 
 ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)  

    ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif)    |
| 75 | 71, 74 | sylbi 207 |
. . . . . 6
 
      
 ![]. ].](_drbrack.gif)
  ![]. ].](_drbrack.gif)    |
| 76 | | rexim 3008 |
. . . . . 6
 

    ![]. ].](_drbrack.gif)   ![]. ].](_drbrack.gif) 
 

    ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)    |
| 77 | 75, 76 | syl 17 |
. . . . 5
 
   

    ![]. ].](_drbrack.gif)       ![]. ].](_drbrack.gif)    |
| 78 | 63, 77 | mpan9 486 |
. . . 4
      
        ![]. ].](_drbrack.gif)   |
| 79 | 78 | an32s 846 |
. . 3
    
 

 

    ![]. ].](_drbrack.gif)   |
| 80 | 18, 79 | mto 188 |
. 2
   
 

  |
| 81 | | iman 440 |
. 2
    
 


   
 

   |
| 82 | 80, 81 | mpbir 221 |
1
   
     |